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Weld quality assurance
Weld quality assurance is the use of technological methods and actions to test or assure the quality of welds, and secondarily to confirm the presence, location and coverage of welds. In manufacturing, welds are used to join two or more metal surfaces. Because these connections may encounter loads and fatigue during product lifetime, there is a chance they may fail if not created to proper specification.
==Weld testing and analysis==
Methods of weld testing and analysis are used to assure the quality and correctness of the weld after it is completed. This term generally refers to testing and analysis focused on the quality and strength of the weld, but may refer to technological actions to check for the presence, position and extent of welds. These are divided into destructive and non-destructive methods. A few examples of destructive testing include macro etch testing, fillet-weld break tests, transverse tension tests, and guided bend tests.〔 http://www.esabna.com/us/en/education/knowledge/weldinginspection/Destructive-Testing-of-Welds.cfm ''Destructive Testing of Welds by ESAB '' 〕 Other destructive methods include acid etch testing, back bend testing, tensile strength break testing, nick break testing, and free bend testing.〔http://www.angelfire.com/my/welding/test.html〕 Non-destructive methods include fluorescent penetrate tests, magnaflux tests, eddy current (electromagnetic) tests, hydrostatic testing, tests using magnetic particles, X-rays and gamma ray based methods and acoustic emission techniques.〔 Other methods include ferrite and hardness testing.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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