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The Practical Application of TDT Hardness Testing The PC-based TDT system consists of a hand-held PC and the TDT probe. The interface between instrument and probe serves as power supply for the probe as well as connector for all control functions. The interface also feeds the BAS signal from the CCD ... Read More
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Hardness Test of Rebound Method Hardness testers using the Rebound method operate in a slightly different manner. Although the size of the test indentation generated is connected with the material hardness even in this case, it is indirectly measured via the loss of energy of a so-called impact body... Read More
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2025 Shanghai International Foundry Expo 2025 Shanghai International Casting Expo Date: December 2-4, 2025 Venue: Shanghai New International Expo Centre Overview of Expo Shanghai International Casting Exhibition exhibits covering foundry, casting mould, foundry materials, foundry equipment and ... Read More
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Hardness Test of UCI (Ultrasonic Contact Impedance) Method As in standard Vickers or Brinell hardness testing, the question as to the size of the test indentation in the material generated by a certain test load also arises in Vickers hardness testing according to the UCI (Ultrasonic Contact ... Read More
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How to Measure Hardness On-site? Conventional hardness testing machines require the test piece be brought to the testing device; but this is not always possible. Portable testing devices have been developed that permit in-situ hardness measurements. One popular device measures the frequency shift of ... Read More
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Why Hardness Testing? In manufacturing applications, materials are primarily tested for two reasons: either to research the characteristics of a new material or as a quality check to ensure that the sample meets a particular specification. Read More
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What is “hardness”? With regard to metals, hardness has always been a subject of much discussion among technical people, resulting in a wide range of definitions. Hardness properties include such varied attributes as resistance to abrasives, resistance to plastic deformation, high modulus of ... Read More
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PORTABLE HARDNESS TESTING – PRINCIPLES AND APPLICATIONS Abstract: Conventional hardness testers, like Rockwell, Brinell or Vickers machines, require the test piece be brought to the testing device; but this is not always possible. Portable testing devices have been developed that permit in-situ ... Read More
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How Rockwell Hardness Testing Supports Modern Material Evaluations Many new products entering the market today are based on new materials and are manufactured using novel processes. These new materials are playing increasingly important roles—supporting innovation and boosting competitiveness in ... Read More
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The Wonderful Journey of Depth of Field (DOF) from Lens to Imaging When photographing an object, the lens used often adopts the form of a lens group to eliminate aberrations and optimize the imaging effect. In the optical path model, it can be approximated as a single lens. In the imaging process, ... Read More
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