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Semiconductor Wafer Characterization Surface Overview Wafer characterization is a critical part of quality control and process optimization in the semiconductor and solar industries. Accurate characterization ensures wafers meet mechanical and dimensional standards such as thickness, bow, and warp — all essential to downstream device performance and yield. Description [...]
Brake Rotors Automotive Brake Rotors Surface Description Introduction Under normal operating conditions brake rotors are subjected to extreme temperatures and forces, which can cause rotor distortion and potential failure. To make certain it can withstand these conditions; extensive laboratory testing is performed to optimize design [...]
Camera Shield Measurement Consumer Electronics Camera shield measurement Surface Equipment Setup Equipment Used DTS-25-04 laser head Rotary Stage PC with Digital Microtrak Basic Support software Setup: Power is automatic mode. Filter is 100Hz Sample rate is 1000 samples sec The head was operated in diffuse [...]
Road Surface Quality Transportation Road Surface Quality Surface Description Introduction Various Departments of Transportation (DOTs), both nationally and internationally, are developing and incorporating automated road quality inspection equipment. “It is well known that the characteristics of the road surface, especially for the surface layer, are [...]
Transportation Railroad Track Quality Surface Description
Semiconductor Wafer Thickness, Bow, Warp And Ttv Surface Description Thickness Measurement ASTM F657: The distance through a wafer between corresponding points on the front and back surface. Thickness is expressed in microns or mils (thousandths of an inch). Total Thickness Variation (TTV) ASTM F657: The difference between the maximum [...]
Wafer QA/QC After Slicing And Polishing Semiconductor Wafer Qa/Qc After Slicing And Polishing Surface Description Introduction:When wafers are sliced up with wire saws, they are measured to make sure they are within the specified thickness, with minimal bow, warp, and TTV. After initial measurement, they are sorted [...]
Grinding Process Automotive Grinding Process Surface Description A cylindrical grinding process finishes most wheel spindle surfaces. It is essential that this grinding process leave a surface finish that is smooth and free of defects with minimal runout. No grinder produces a perfect surface. Grinder wheel [...]
Brake Rotors Thickness Variation Automotive Brake Rotors Thickness Variation Surface Introduction: Understanding Brake Rotor Thickness and Its Variation Whether you're driving cross-country or across town, your vehicle’s brake system is constantly at work. Among its most critical components are the brake rotors, which endure extreme [...]
Torque Converter Automotive Torque Converter Surface Description Since minute defects in the torque converter casing wall thickness can result in unacceptable and dangerous torque converter expansion, a precision measurement system was needed to measure the impeller hub displacement and thus the torque converter axial displacement. [...]
