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How Drop Impact Test Machine Works? Drop Impact Test machine is to test large and heavy package products’ drop impact performance, through simulates real face ,edge and corner drop conditions. This equipment mainly used to inspect package products drop resistance capability during transportation ... Read More
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How Operator Influence Accuracy of Microhardness Tester No other discipline of hardness testing is influenced as much by the operator as microhardness. Although this is true for both Vickers and Knoop testing, Knoop testing with its fine, seemingly endless tips is the most susceptible. In general, ... Read More
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Reason to Calibrate Coating Thickness Gauge Calibration of coating thickness gauges will be affected by the type of material, the shape and the surface finish of the metal substrate to be tested. For example the magnetic properties of steel alloys vary and the conductivity of different aluminium ... Read More
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What is Ultrasonic Flaw Detector? Ultrasonic flaw detector is a device that use sound propagation method for the detection of flaws in many materials. The basic use of ultrasonic flaw detector is done in many engineering processes. This is used in the process of detection of material surfaces. ... Read More
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Error and Repeatability of Micro Vickers Hardness Test Below is the table of Error and Repeatability of Micro Vickers Hardness Tester was cited from ASTM E384. Read More
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Common Problems in Microhardness Testing Microhardness testers are delicate instruments. Extremely light forces (typically from 10 to 1,000 g.) must be accurately applied, and the resultant impressions (some as small as 10 microns) must be precisely measured under high magnification. And so there ... Read More
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The thickness of the test specimen shall be such that no bulge or marking showing the effect of the force appears on the side of the specimen opposite the impression. In any event the thickness of the specimen shall be at least one and one half times the length of the diagonal. When laminated ... Read More
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What is Depth of Field (DOF) ? Microscope depth of field (DOF), also called focus range or effective focus range, is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image. Although a lens can precisely focus at only one distance at a time, the ... Read More
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Copper-accelerated acetic acid-salt spray (CASS) testing used to evaluating the corrosive performance of decorative copper/nickel/chromium or nickel/chromium coatings on steel, zinc alloys, aluminum alloys, and plastics designed for severe service. It is also applicable to the testing of anodized ... Read More
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Advantages of Stereo Microscope It helps view opaque specimens; A stereo microscope allows for microphotography; It also helps in 3-D imaging; A dissecting microscope enables the view of larger samples as it has a huge working distance. Disadvantages of Stereo Microscope It is not applicable for ... Read More
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