Weld_tests_for_friction_welding
Quality requirements of welded joints depend on the form of application, e.g. in the space or fly industry weld errors are not allowed.[1] Science try to gets good quality welds. There are many scientific articles describing the weld test, e.g. hardness,[2][3][4] tensile tests.[3] The weld structure can be examined by optical microscopy[3][4][5] and scanning electron microscopy.[6][4][5][3] The computer finite element method (FEM) is used to predict the shape of the flash and interface and others, not only for rotary friction welding (RFW),[7] but also for friction stir welding (FSW),[8][9] linear friction welding (LFW),[10] FRIEX,[11] and others. Temperature measurements are also carried out for scientific purposes e.g. by use thermocouples[4][5] or sometimes thermography,[7][5] mentions about measurements are generally found in research materials and journals.