In order to take proper measurements on a specimen that is being tested, such as a piece of material for a hardness test, proper sample preparation is a key step in order to get accurate data from the test. In sample preparation, you usually have the following steps: sectioning, mounting, coarse grinding, fine grinding, polishing, etching and examination. We are going to explain the grinding and polishing steps in sample preparation. Sample Preparation – Grinding and polishing explained. Grinding Grinding removes saw marks and levels and cleans the specimen surface. The goal at the end of grinding is to... Continue reading
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Hardness testing is absolutely critical in many industries and phases of manufacturing. Detecting defects during this process can save thousands of dollars and a lot of headaches later due to product or structural failure. Yet, traditional hardness testing is destructive to the test sample. In many cases, this is not what you want. Instead, you want to use a non-destructive testing method, like Ultra Sonic Hardness testing. What is Ultrasonic Hardness Testing Ultrasonic Hardness Testing is also known as Ultrasonic Contact Impedance. The Ultrasonic Contact Impedance method has been around for over 50 years and was developed heavy and/or unmovable... Continue reading
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