4 articles in this topic.
How proof load tests, periodic inspections, and NDT are applied to lifting devices, and how to evaluate a rented aircraft engine stand like the Trent 700 unit. Load factors, intervals, and documentation explained.
Microhardness testing per ASTM E384 for case depth, decarburization and coatings. Covers Vickers and Knoop traverse testing, load selection, spacing rules and depth-vs-hardness plots per AMS/SAE specs.
ASTM E140 hardness conversions are empirical correlations valid only for specific alloy families. Learn why converting across steel, aluminum, and copper groups introduces significant error and when direct testing is mandatory.
Practical comparison of Rockwell, Brinell, and Vickers hardness tests: indenter types, loads, ASTM standards, applications, and how to choose the right method for QA, welding, and procurement.