#Microhardness tester

[metallurgyandmetrology]

Next-Generation Brinell Hardness Testing: Multitek's Pioneering Pathway

Brinell Hardness Testing is a vital technique in the industries of material analysis and quality assessment. Here at Multitek Technologies, we've been leading the way in this area to improve precision, efficiency, and durability. Our innovative Brinell Hardness Tester platforms have been engineered to withstand the demanding requirements of contemporary industries. Let's analyse how Brinell hardness testing is currently being updated by Multitek Technologies.

Cutting-Edge Technology: Multitek Technologies leverages state-of-the-art technology to develop Brinell Hardness Testers that push the boundaries of accuracy and performance. Our testers integrate advanced measurement algorithms and sensor technologies to deliver precise and consistent results, ensuring superior reliability in material assessment.

Highly Accurate Measurements: Accuracy is paramount in hardness testing, and Multitek's Brinell testers excel in this aspect. Utilizing advanced optical systems and precision mechanics, our testers provide highly accurate Brinell hardness measurements across a wide range of materials, including metals, alloys, and composites.

Versatility and Adaptability: Multitek's Brinell Hardness Testers are engineered for versatility, capable of accommodating various sample sizes, shapes, and surface conditions. Whether testing large industrial components or small laboratory specimens, our testers offer unmatched flexibility and adaptability to suit diverse application needs.

User-Friendly Interface: Simplifying the testing process, Multitek's Brinell testers feature intuitive user interfaces and ergonomic designs. With user-friendly controls and interactive displays, operators can efficiently perform hardness tests with minimal training, enhancing productivity and reducing downtime.

Robust Construction: Built to withstand the rigors of industrial environments, Multitek's Brinell Hardness Testers boast robust construction and durable components. Engineered for longevity and reliability, our testers deliver consistent performance even in the most demanding operating conditions.

Comprehensive Data Analysis: Multitek Technologies goes beyond mere measurement, offering comprehensive data analysis features with our Brinell testers. Advanced software capabilities enable in-depth analysis of hardness data, facilitating informed decision-making and quality control processes.

Seamless Integration: Integration capabilities are crucial for seamless workflow integration, and Multitek's Brinell testers are designed with interoperability in mind. Our testers seamlessly integrate with existing quality management systems, enabling streamlined data management and analysis across the organization.

Industry-Leading Support: At Multitek Technologies, our commitment doesn't end with product delivery. We provide industry-leading support services, including installation, training, and ongoing technical assistance, ensuring our customers derive maximum value from our Brinell hardness testing solutions.

Multitek Technologies is at the forefront of Brinell hardness testing innovation, offering cutting-edge solutions that redefine standards of precision, reliability, and efficiency. With our advanced Brinell Hardness Testers, customers can confidently meet the challenges of modern materials testing, empowering them to achieve excellence in product quality and performance.

[engineeringlabsinstrument]

Testing equipments Manufacturer, Suppliers and Exporter in India

Testing equipment is a broad term that encompasses a wide range of tools and devices used to evaluate the properties and performance of materials, products, and processes. These instruments play a vital role in ensuring the quality and safety of goods and services, and they are used in a variety of industries, including manufacturing, construction, healthcare, and environmental protection.Testing equipment can be broadly categorized into two main types: destructive and non-destructive. Destructive testing involves damaging or destroying the item being tested in order to assess its properties. This type of testing is often used for materials testing, such as tensile testing and impact testing. Non-destructive testing, on the other hand, does not damage the item being tested. This type of testing is often used for product testing, such as ultrasonic testing and radiographic testing. The most common types of testing equipment include: Voltmeters and ammeters: These devices are used to measure electrical voltage and current, respectively. Multimeters: These devices combine the functions of a voltmeter, ammeter, and ohmmeter into a single unit. Oscilloscopes: These devices are used to display electrical signals as waveforms on a screen. Signal generators: These devices are used to generate electrical signals of different frequencies and amplitudes. Power supplies: These devices are used to provide a stable source of electrical power. Ovens and furnaces: These devices are used to heat materials at controlled temperatures. Centrifuges: These devices are used to separate substances of different densities from solutions. Incubators: These devices are used to provide controlled temperature environments for the growth of cultures. In addition to these general-purpose testing instruments, there are also many specialized types of testing equipment that are designed for specific applications. For example, there are testing instruments for measuring the hardness of metals, the strength of concrete, the purity of water, and the emissions of vehicles. Testing equipment is an essential tool for ensuring the quality and safety of goods and services. It is used in a wide variety of industries, and it plays a vital role in protecting the public health and safety. Here is a list of common testing equipment used in school and college laboratories: 1.Microscopes: Compound microscope Stereo microscope 2. Glassware: Beakers Test tubes Petri dishes Graduated cylinders 3. Chemistry Equipment: Bunsen burners Pipettes pH meters Centrifuges 4. Physics Equipment: vernier calipers Oscilloscopes Spectrometers Electromagnets 5. Biology Equipment: Dissection kits Microtomes Incubators Autoclaves 6. Environmental Testing: Weather stations pH meters for soil testing Water quality testing kits 7. Electronics Equipment: Multimeters Function generators Oscilloscopes Breadboards 8. Computer Science Lab: Computers and laptops etwork analyzers Microcontroller boards (e.g., Arduino, Raspberry Pi) 9. Geology Equipment: Rock and mineral kits Sediment sieves GPS devices 10. Material Science: Tensile testing machines Hardness testers Microhardness testers 11. Safety Equipment: Safety goggles Lab coats Emergency showers and eyewash stations 12. General Lab Equipment: Hot plates Magnetic stirrers Scales and balances Autoclaves 13.Mathematics Lab: Geometric models Graphing calculators Mathematical manipulatives 14.Language Lab: Headphones with microphones Language learning software Recording equipment 15.Robotics Lab: Robot kits Sensors (e.g., ultrasonic sensors, gyroscopes) Programmable controllers 16. Astronomy Lab: Telescopes Star charts Solar filters 17. Health Science Lab: Stethoscopes Blood pressure monitors Skeleton models 18. Psychology Lab: Reaction time timers Psychophysiological monitoring equipment Cognitive testing tools

[qiujumper]

How to Choose Hardness Test (For Beginner)?

Hello, my best friend! How have you been? We haven’t talked to each other for a while.

In this video, I will show you some tips on how to choose the proper hardness tester for your product.

As you know, choosing the wrong hardness tester will waste lots of money!

So follow us, let’s go!

Manufacturers and scientists normally go through the hardness test of any solid material to know the quality or identify the element.

The hardness gives an idea about the material’s characteristic behavior.

The material properties such as resistance, durability, strength, denting, etc. can be determined by doing the hardness test.

Otherwise, it is really hard to know whether the material will serve the purpose or not. Determine the testing method for the test is an important task.

The type, size, and microstructure everything must be considered for that.

So, seriously, how to choose the right hardness tester?

Before we go further, let me tell you something, my old sport.

Just between you and me.

if you are looking to buy a professional and high-quality hardness tester,

please visit our website www.test-hardness.com. and, please, please remember to ask for a coupon!

Keep this secret for me, would you?

Ok, let’s move on.

For testing the hardness of metallic objects, there are a few methods,

like the Rockwell hardness test, the Vickers hardness test, the Knoop hardness test, and the Brinell hardness test.

What is Rockwell hardness test?

The Rockwell test is the most common and easiest method used in the industry.

An indent is there which is inserted into the surface of the material by a major load and then the depth is measured.

It is the quickest and most convenient one used for a larger sample.

What is The Vickers hardness test?

The Vickers test also another one used for measuring the hardness of all types of solid materials.

The diagonal lengths are measured to calculate the hardness of the sample. It is used for both the macro hardness testing and microhardness testing.

What is The Knoop hardness test?

The Knoop test can be the alternative to the Vickers test. It is applicable to materials like ceramic which is brittle and hard as well. The hardness test is done at the micro-level.

The indenter that is used is a pyramidal diamond-shaped and asymmetric.

It is suitable for small areas. It helps to test thin layer hardness like coating. The cracking problem can be solved by this.

What is The Brinell hardness test?

The Brinell hardness test is for materials that have a grain structure and are large in size.

Here a carbide ball is used to measure the hardness optically.

what is Mohs hardness test?

For minerals or rocks, the most common test is the Mohs hardness test.

How to test hardness for woods?

For woods, the most common is the Janka test.

Here, a small steel ball is inserted on the surface and the force is measured to know the hardness.

To get an accurate result, there are a few other factors that must be considered and controlled,

like vibrations, temperature, light, humidity, temperature, etc.

Do you have a good time today?

We will talk about How to test the hardness of rocks at home in the next video.

Don’t forget to subscribe to our channel to watch more videos about professional hardness testers, my dear old sport.

Also, you can check our website www.test-hardness.com to find more information about our hardness tester product and latest industry news.

Stay tuned for the next episode my dear best friend!

I hope you have a wonderful day!

See you.

https://youtu.be/4ipwT4BvZYg

[testcoatonline]

Digital Micro Vickers Hardness Testing System: Everything You Need to Know

Digital micro Vickers hardness testing system is a common way of quantifying the hardness of materials in engineering and manufacturing. This is accomplished by using a sharp object such as a diamond point or needle to scratch the surface of the material being tested in order to determine how much force is required for scratching it. In recent years there have been advancements in technology that make this process faster and more accurate while maintaining high precision for hardness measurements.

Digital micro Vickers hardness testing system-based equipment generally falls under two categories: a contact type, which touches the test material, and a non-contact type that does not touch the sample. The noncontact microhardness testers are generally more accurate. Contact instruments require the user to apply just enough force to make contact with the surface of the object being tested. With non-contact instruments, it is possible to press harder on an object that has a lower hardness level than another with a higher hardness level without contacting it. A force is applied using a Vickers indenter or diamond tip that is quite small in size. An indenter tip that looks like this can have different shapes and sizes depending on its purpose.

Most digital micro Vickers hardness testing systems measure the force required to indent or scratch the material surface. Vickers indenters are a special type of diamond tip used to measure the hardness of materials. A Vickers indenter, also known as a digital microhardness tester, applies an extremely small amount of power (generally less than 1 V) and simultaneously touches the test surface with its diamond tip to achieve indents. A Vickers Indenter measures hardness in units called Vickers Units (VU). Each VU has a numerical value ranging from 0 to about 1000000. An instrument that gives readings in VU is called a digital micro Vickers hardness tester and another instrument that gives readings in grams is known as a digital micro-hardness tester.

In a digital MHL system, an integrated circuit chip is used for each measuring step. A very high-precision (100 nm) diamond tip probe generates the electrical signal which is amplified by an integrated circuit and transmitted to the display unit. At the display unit, the signal is digitized and recorded to a logarithmic scale. The data is then transmitted to a PC where it can be interpreted and displayed as the hardness value on screen. Some MHL systems also have an integrated sensor that measures the pressure applied by the diamond tip to a sample and transmits it to a PC as well.

In order for the digital micro Vickers hardness testing system to function properly and produce accurate results, all of these components must be in good working order. It's crucial that the tips are cleaned before each use. Vickers tips can be cleaned with alcohol or acetone and left overnight without any ill effects (depending on quality of the tip). Diamond tips and probes can be cleaned with alcohol or acetone as well.

The instrument is then calibrated for the first time. Calibration should be performed with both the tip and the sample holder to ensure accuracy. Calibration should be done at least every 50 readings. Proper maintenance is essential to ensure proper functioning of a digital micro-hardness tester or digital micro Vickers hardness testing system. It is important that these instruments are properly cleaned between each use and stored safely to avoid damage from temperature, humidity or other factors which could cause damage to parts within the instrument. This may also require lubrication on parts such as needle probes that will come into contact with samples in order for them to function properly.

About TestCoat:

For many years, TestCoat has been a trustworthy partner and leader in the supply and distribution of inspection equipment, laboratory & physical test equipment for the coatings and paint industries. We supply non-destructive quality control and testing instruments such as Paint thickness Mil Gauges, Gloss meters, portable rockwell hardness tester, laboratory mixersviscometers, film applicatorsdrying time recorder, cupping testers, micro tri gloss meter, Wet scrub abrasion testers, Coating inspection kits with advanced technology, and of the highest standards.

For more information, visit https://www.testcoat-usa.com/

Original Source : https://bit.ly/3kB60if

[rizki28-us]

Mengenal Hardness Tester/ Alat Ukur Kekerasan

Alat ukur kekerasan (Hardness Tester) adalah alat yang berfungsi untuk mengukur kekerasan material seperti batu, besi, baja, logam dll, selain itu kekerasan adalah salah satu sifat mekanik dari suatu material selain sifat fisik dan teknologik yang dimilikinya. Kekerasan memiliki rumus untuk pengujian kekerasan seperti ada , Brinnel (HB / BHN), Rockwell (HR / RHN), Vikers (HV /VHN) dan Micro Hardness (knoop hardness).

Pengujian kekerasan/ uji kekerasan adalah pengujian yang cukup efektif karena secara mudah mengetahui sifat mekanik suatu material. Walaupun cara pengukuranya hanya dilakukan pada satu titik tertentu. Hasil nilai yang muncul cukup valid untuk menghasilkan data kekuatan suatu material.

Dari sekian banyak pengujian yang telah dilakukan, pengujian kekerasan merupakan salah satu pengujian penting untuk menganalisa suatu material, biasanya pengujian dilakukan agar dapat mengetahui ketahanan terhadap deformasi plastik, suatu nilai yang penting untuk aplikasi dan industri.

Pengaruh beban, suhu dan  tekanan pada aktivitas manufaktur pun bisa memberikan dampak yang cukup besar terhadap kinerja material, terutama material yang berbahan logam. Karena nya pengujian kekerasan merupakan hal yang penting untuk menguji kualitas dari material, sehingga peran nya sangat penting pada proses control kualitas.

Berikut ini adalah metode yang digunakan dalam uji kekerasan :

Brinell ( HB/BHN )

Metode yang satu ini dalah metode yang paling banyak dipakai, cara kerja metode ini adalah dengan cara menekankan beban ke benda yang akan diuji dengan ukuran beban yang sudah ditentukan, lalu mangukur dan menganalisa bekas dari alat penekan. Tujuan dari metode yang satu ini adalah agar dapat menentukan seberapa keras suatu benda melalui tahap identor yang ditekankan pada permukaan benda yang sedang diuji, akan tetapi metode ini hanya dapat dilakukan pada benda yang meiliki permukaan kasar dengan rentan kekuatan 500 hingga 3000 kgf. Sementara itu identor atau bola jaya, adalah benda yang terbuat dari bahan karbida tungsten yang sudah di plating.

Rockwell ( HR/RHN )

Metode Rockwell adalah metode kekerasan suatu benda yang dapat ditentukan berdasarkan kenaikan bersih dari kedalaman beban yang diterapkan. Data yang dihasilkan bukan suat nomor unit, namun diberikan dalam bentuk skala seperti K,M,L,R,E semakin tinggi skala bendana maka akan semakin keras benda tersebut

Vickers ( HV/VHN )

Pengukuran dengan metode ini biasa disebut dengan metode microhardness, karena metode ini sering digunakan untuk benda kecil dan tipis. Metode ini dilakukan berdasarkan pengukuran optic, dengan cara menentukan rentang beban identor, dengan maksud membuat sebuah lekukan pada material yang diukur lali dikonfersikan ke nilai kekerasan. Cara tersebut sangat bergua apabila diuji pada benda yang lebih luas, namun sampel uji harus dipoles pada ukuran tayang

Testingindonesia.co.id  menjual produk alat ukur kekerasan, kami mensupply hardness tester dari brand Time dan Novotest, untuk informasi lebih lanjut dapat menghubungi 021-2956-3045 atau email sales@testingindonesia.com.

[alatujiindonesia]

Portable Hardness Tester Alatuji

Portable Hardness Tester Alatuji

Uji kekerasan merupakan pengujian yang sangat baik dan juga pastinya sangat efisien untuk menguji kekerasan suatu material. Dengan jalankan pengujian ini, kamu sanggup dengan enteng menyadari uraian ciri mekanisme suatu komponen atau material.

Meskipun pengukuran hanya dilaksanakan pada suatu titik, atau area khusus saja, nilai kekerasan cukup valid untuk membuktikan kebolehan suatu material.…

[howtofindthemoney]

Pusat Teknologi Material ptm bppt

[metallurgyandmetrology]

Enhance Your Hardness Tester with Multitek Technology's Repair & Upgradation Services

Hardness testing machines are crucial for ensuring material quality across various industries. However, with time and usage, these machines may require repair or upgrades to maintain precision and efficiency. If you own a Future Tech Micro Vicker Hardness Tester, Future Tech Rockwell Hardness Tester, Mitutoyo Rockwell Hardness Tester, or Mitutoyo Micro Vicker Hardness Tester, Multitek Technology offers specialized services to restore and enhance their functionality.

Note - We are not an authorized service provider for Minutoyo, Future Tech, Wilson, Leco, or Shimadzu Hardness Tester. However, we offer professional repair and upgrade solutions for these brands through a team of experienced engineers and a state-of-the-art laboratory. Our services are performed with precision and attention to detail, ensuring high-quality results at highly competitive rates. The images of third-party brands displayed on our website are solely for reference and do not imply affiliation.

Why Choose Multitek Technology?

Multitek Technology is a trusted name in the industry, providing repair and upgradation services for hardness testers from leading brands such as Future Tech and Mitutoyo. Our team of experts ensures that your testing equipment remains accurate, reliable, and up to date with the latest technological advancements.

Future Tech Hardness Tester Services

1. Future Tech Micro Vicker Hardness Tester Repair & Upgradation

The Future Tech Micro Vicker Hardness Tester is widely used for microhardness measurements. Over time, its precision can diminish due to wear and tear. Multitek Technology provides comprehensive repair and machine upgradation services to restore the accuracy and enhance the lifespan of your device. Upgrade Your Future Tech Micro Vicker Hardness Tester

2. Future Tech Rockwell Hardness Tester Repair & Upgradation

Rockwell hardness testing requires high accuracy, and a faulty machine can lead to inconsistent results. Our Future Tech Rockwell Hardness Tester repair and upgradation services ensure smooth operation and accurate hardness readings. Learn More About Future Tech Rockwell Hardness Tester Upgradation

Mitutoyo Hardness Tester Services

3. Mitutoyo Rockwell Hardness Tester Repair & Upgradation

Mitutoyo is a leading brand known for its precision instruments. If your Mitutoyo Rockwell Hardness Tester is experiencing performance issues, Multitek Technology offers top-notch repair and upgradation services to enhance its efficiency and accuracy. Upgrade Your Mitutoyo Rockwell Hardness Tester

4. Mitutoyo Micro Vicker Hardness Tester Repair & Upgradation

For high-precision microhardness testing, the Mitutoyo Micro Vicker Hardness Tester is an essential tool. Our repair and machine upgradation services will ensure that your equipment functions flawlessly, providing precise and consistent results. Enhance Your Mitutoyo Micro Vicker Hardness Tester

Conclusion

Regular maintenance and timely upgradation of hardness testing machines are essential for accurate material testing. Multitek Technology specializes in repairing and upgrading Future Tech and Mitutoyo hardness testers, ensuring optimal performance and extended durability. Visit our website to explore our comprehensive services and give your testing equipment a new lease on life!

[harshadtmr-blog]

Hardness Tester Market: Repository of Analysis and Information for Every Facet of the Market

Hardness is defined as the resistance power of different types of material to permanent distortion such as wear, indentation, scratch and abrasion. In addition, hardness is generally considered as resistance to penetration. Thus, the measurement of material harness has different significance in each and every end use industry. Hardness tester is one of the major component for the measuring of material hardness. The most widespread methods are Vickers, Rockwell & Brinell hardness tests for different types of alloys and metals. Across the globe, brinell hardness tester are used for determining the brinell hardness of cast-iron, un-quenched steel, soft bearing alloys and nonferrous metals.

This factor is expected to boost the demand for the global hardness tester market over the forecast period. Furthermore, hardness testers are useful tool for wide range of application such as electronics, metal and mining, defense & aerospace and automotive among other for evaluating the properties of materials. Rising adoption and growing popularity of these type of devices among different end use industry is poised for a healthy growth over the forecast period from 2018-2026.

The global hardness tester market has been segmented on the basis of product type, testing material, test method, end use industry and geography. Based on product type, the market for hardness tester has been segregated into two types which includes portable hardness testers and bench top hardness testers. In 2017, the bench top hardness tester segment hold the major market share in global hardness tester market. On the basis of testing material, the hardness tester market has been separated into different types which includes aluminum, rubber, plastic, steel, iron and metal alloys.

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Automation, which is one of the most important driver of the market, is anticipated to attribute expressively towards the growth of the market in coming years. Moreover, based on test method, the market for hardness tester market has been classified into different types which includes Rockwell hardness testers, Vickers hardness testers and Brinell hardness testers. However, in current practice in the U.S divides hardness testing into two categories such as microhardness and macrohardness. In 2017, the Rockwell hardness segment hold the major market share and is predicted to maintain its dominance throughout the forecast period.

In addition, Rockwell harness testing is one of the most popular hardness test in use today, mainly because it overcomes the limitations of the Brinell test. Furthermore, on the basis of end use industry, the hardness tester market has been segmented into construction, metal & mining, electronics & electrical, automotive, aerospace, and energy & power among others. The growing necessity for all these different hardness tests is owing to the necessity for categorizing the great range of hardness from hard ceramics and soft rubber, which is expected to attribute significantly towards the growth of the global hardness tester market. However, price based competition among the global players is projected to hinder the market growth during the forecast period.

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Geographically, the hardness tester market has been segregated into North America, Europe, Asia Pacific, Middle East & Africa and South America. In terms of revenue, in 2017, Asia Pacific held the largest market share in the global hardness tester market. This is mainly due to Asia Pacific is one of the major hub for different OEM manufacturers and potential economy, which is the major driving force behind escalating growth of hardness tester business. On the other hand, North America is expected to become the most promising market with a second highest market share followed by others region. Furthermore, the growing usage of these products among different testing and research laboratories is identified to be one of the key driving factor contributing to the growth of the hardness tester market.

This report explores the major international industry players in detail. The key players operational in the global hardness tester market includes Wilson Mechanical Instrument Co. Inc., Wolpert Wilson Instruments, INNOVATEST Europe BV, Zwick Roell, ERNST Harteprufer SA, EMCO-TEST Prufmaschinen GmbH, Foundrax, Newage Testing Instruments, Qness GmbH and Tinius Olsen among others.

[qiujumper]

Why use the Vickers hardness test?

For many quality testing and other procedures, hardness testing holds prime importance.

Hardness tests enable us to evaluate the properties of materials such as ductility, strength and wear resistance that will help us determine to check if the material is suitable for a specific purpose.

The hardness of a material is not its fundamental property, but it's only a way to determine the resistance exhibited by material to permanent deformation.

The hardness test to be performed for a specific material is based on the homogeneity, size, type, and condition of the material you are going to test. There are several hardness tests available, and one of them is the Vickers hardness test.

Vickers hardness testing

Vickers hardness testing is a multifaceted testing method that can be used for both micro and macro hardness testing.

Vickers hardness test was developed by George E. Sandland and Robert L. Smith in 1921 as an alternative to the Brinell method for measuring material hardness.

A wide range of applications and materials can be subjected to Vickers hardness testing, including microhardness testing.

It is generally considered easy to be carried out as compared to other hardness tests since the indenter can be used with all kinds of materials irrespective of their hardness and also because the size of the indenter doesn’t effect the required calculations.

Categorization of Vickers testing method

Vickers testing method is considered as a static hardness testing method that can be characterized further into the following aspects:

Regarded as one of the standardized procedures (ASTM E384, ASTM E92, ISO 6507)

It is an optical method which means the hardness value of a test material/specimen is determined by the size of the indentation.

The indenter has a plane angle of 136° and is an equilateral diamond shaped pyramid.

Vickers testing method can be used across all load ranges used for hardness testing (from micro to macro ranges) as it has a test load range from 1gf up to 120 kgf according to ASTM and 1gf according to ISO respectively.

How is it performed?

Vickers hardness test is incredible in its ability to be performed on both micro and macro hardness scales with a maximum test load of around 50 kgs.

Vickers hardness test is performed by putting a controlled force on the indenter that is usually a square-shaped diamond pyramid over a period of time.

After a particular indenter is pressed into the surface under testing, the indentation resulting from it is measured with the aid of high-powered magnifying instruments such as microscopes and eyepieces. Sometimes, the software is also used to analyze and generate more precise results.

Two varying forces are used by Vickers hardness tests such as micro ranges at 10 to 100 grams and macro ranges from 1 to 100 kgs.

Both ranges use the same indenter hence producing hardness values that are constant over all-metal hardness ranges.

Sample preparations are mandatory to obtain precise results. A sample is required that is small enough to fit into the tester adequately.

Moreover, to achieve accurate measurement and regular shape of indentation, the preparation must have a smooth surface. This also makes sure that the indenter can conveniently hold the subject perpendicularly.

Specimen required for Vickers hardness testing

The surface of the specimen that is needed for the Vickers testing method needs to be prepared first when using Vickers method.

This is because the requirements of specimen surface quality are stricter than other testing procedures.

The specimen needs to meet the given requirements for Vickers hardness test:

The specimen/ material has to be precision-ground in case of macro-hardness testing or polished for micro-hardness testing.

The specimen/material shouldn’t move during the testing procedure and should be clamped strongly.

Moreover, care should be taken regarding any kind of vibration or disturbance while conducting a Vickers hardness test to avoid poor results.

Importance of Vickers hardness test

Vickers test can be very beneficial for applications such as testing ultra-thin materials like foils.

They can also be very useful for measuring single microstructures, small parts or surfaces and determining a hardness change profile by producing an indentation series.

If the indentation is smaller, the object will be harder. Likewise, the material is expected to lack hardness if the indentation is large.

Vickers hardness testing is used by several industries to determine the right kind of material to be used for machinery and operations.

The material with the best hardness conditions is then chosen for the specific purpose in the industry.

Advantages of Vickers hardness tests

There are several advantages of the Vickers hardness test. Some of them are discussed below:

Vickers hardness tests procedures cover the entire hardness range, and hence it can be used for any kind of specimen or material whether it's hard or soft. Either it's about microhardness testing or macro hardness testing, Vickers hardness tests can generate accurate results for both.

Often considered as Microhardness testing, Vickers hardness tests are used to test any kind of material including composites, ceramics, and metals, etc.

Only one type of indenter is used for various kinds of Vickers methods.

The specimen used in the Vickers hardness test can be used for other purposes as well because the test also accompanies non-destructive testing.

Disadvantages of Vickers hardness testing

Despite many advantages that render Vickers testing to be one of the best hardness testing methods, there are a few disadvantages as well that should be taken into consideration.

As the indent is measured optically, the specimen’s surface quality must be smooth and good. This means that the precise evaluation could be difficult if the test location is not well- prepared (i.e., polished and ground).

Compared to Rockwell hardness testing and other methods, Vickers hardness testing is comparatively slow. The test cycle doesn’t include the time taken to prepare the specimen and takes around 30-60 seconds approximately.

Vickers hardness tests need to be equipped with an optical system due to the necessary optical indent evaluation. This renders Vickers hardness testing to be more expensive to purchase as compared to other testers, including Rockwell tester.

[cancersfakianakis1]

Direct radiation-induced effects on dental hard tissue

Abstract

Background

Radiation caries is a complication of radiotherapy characterized by enamel erosion and dentin exposure. The mechanisms of characteristic radiation caries formation are not well-understood. The aim of this study was to evaluate the direct radiation-induced effects on dental hard tissue and investigate their role in the formation of radiation caries.

Methods

Sixty non-carious third molars were divided into three groups (n = 20), which would be exposed to 0 Gy, 30 Gy, and 60 Gy radiation, respectively. After radiation, microhardness and elastic modulus were measured at four depths by means of a Vickers microhardness tester and atomic force microscopy (AFM). The microstructure was observed by scanning electron microscopy (SEM). X-ray diffraction and Raman microspectroscopy were used to determine crystal properties and protein/mineral (2931/960 cm− 1) ratios.

Results

A statistically significant decrease in microhardness and elastic modulus values 50 μm from the dentino-enamel junction (DEJ) in enamel was revealed in the 30-Gy and 60-Gy groups. With the increasing dose, destruction of interprismatic substance and fissures at the DEJ-adjacent region were found. A greater reduction of crystallinity was revealed in enamel compared with dentin. Raman spectroscopic analysis showed a slight increase of the protein/mineral ratio for enamel following accumulated radiation, while the protein/mineral ratio for dentin was decreased.

Conclusions

Radiation could directly alter the mechanical properties, micro-morphology, crystal properties, and chemical composition of dental hard tissue. The early destruction of DEJ-adjacent enamel, combined with decreased crystallinity of enamel under radiation exposure, may be related to the formation of characteristic radiation caries.

http://bit.ly/2RLpkMY

[testcoatonline]

Common Inspection Equipment for Coating & Paint Industry

The inspection of paint and coatings is one of the most important stages in production. Without proper inspection, it is impossible to ensure quality or determine if a coating has achieved the desired properties.

Paint and coatings industry-specific inspection equipment are designed for different applications, e.g.: durability testing, washability testing, hardness testing, glossmeter and even color measurement. Which testing equipment to choose depends on the production process, production quality requirements and the specific properties of the product being manufactured.

Washability tester: This is one of the most common paint inspection tools used in the coating industry. Washability tester measures both flash rust and salt spray resistance of a product by using a washability test bench. Flash rust is the rusting that occurs when exposed to air for 24 hours after washing with water.

Paint Microhardness Testing System: Micro hardness testing is an important tool for coating and paint testing. It utilizes a roller with the thickness of a 0.5mm steel plate in order to receive a sample from the base coat layer of the product being tested and then apply a stamping force of over 25N to measure the hardness of the material. Hardness value is normally expressed in Rockwell (HV) scale, which is determined by measuring the number of indentations made by a ruby ball under constant pressure against compound steel that has grains. The higher the hardness value, the lower the indentation.

Paint Vickers Hardness Testing System: Vickers hardness testing measures a coating or paint's ability to achieve high-gloss or passes a polish test without showing signs of flaking, cracking or disintegration. A hammer is used to repeatedly strike an aluminum plate with a specific force until it cracks. The set force required to produce a single crack is called Vickers hardness. It can be used in coating and paint inspection as well as in product quality control before packaging and shipping.

Color measurement device: Color measurement is important to determine the color of the paint or coating before applying. This will help prevent color errors, which result in poor paint quality (color reversal), reduced life, and increased cost of production.

Digital micro Vickers hardness testing system: This Digital micro Vickers hardness testing system provides a fast and efficient way to evaluate the hardness of coating layers by measuring the depth of indentation made by a ruby ball under constant pressure as it rolls against steel bars with grains. The hardness value is usually expressed in Rockwell (HV) scale, but can be converted to another standard such as Vickers (HV) scale if desired.

Rockwell hardness testing system: The Digital Rockwell hardness testing system is widely used in the industrial field to measure the surface hardness of a variety of materials such as paints, coatings, plastics, rubber and metal alloys.

Paint meter: Paint meter is a small precision device or instrument that will measure the amount or density of a particular paint or coating applied onto an object/surface. Paint meters are especially helpful when applying coatings like wall-paint, window-paint and cabinet-paint in residential homes.

About TestCoat:

For many years, TestCoat has been a trustworthy partner and leader in the supply and distribution of inspection equipment, laboratory & physical test equipment for the coatings and paint industries. We supply non-destructive quality control and testing instruments such as Paint thickness Mil Gauges, Gloss meters, portable and benchtop metal hardness testers, laboratory mixersviscometers, film applicatorsdrying time recorder, cupping testers, Wet scrub abrasion testers, Coating inspection kits with advanced technology, and of the highest standards.

For more information, visit https://www.testcoat-usa.com/

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Shore Instruments Digital Durometer Model 719

Shore MicroHardness Durometer Tester for ASTM D2240

Shore Instruments Mircro-O-Ring Hardness Tester, Digital Durometer Model 719. A highly accurate force and displacement measuring system assures consistent results with accuracy and repeatability.