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|Title:||WELDING PROCEDURE QUALIFICATION TESTS vs. PRODUCTION TESTS - A SYSTEMATIC STUDY.|
|Authors:||Lai, M.O. |
|Source:||Lai, M.O.,Vilpponen, K.O. (1987-06). WELDING PROCEDURE QUALIFICATION TESTS vs. PRODUCTION TESTS - A SYSTEMATIC STUDY.. Welding Journal (Miami, Fla) 66 (6) : 40-42. ScholarBank@NUS Repository.|
|Abstract:||In order to ensure good quality in field welds in pipelines and structures, extensive testing is normally carried out through procedure qualification testing programs prior to any actual field welding (Ref. 1). During field welding, there may on some occasions be a requirement for testing of samples taken from actual production welds. Although both these tests may have been performed and quality of welds ensured satisfactory, only limited data are available on the difference between the level of weld quality each test provides. The purpose of this study is, hence, to systematically investigate the differences in mechanical properties of welds taken from procedure qualification tests and production tests in pipeline and structural joint applications. Three different welding processes were employed: submerged arc welding (SAW) and automatic gas metal arc welding (GMAW) for the pipeline, and manual shielded metal arc welding (SMAW) for the structural joint. Refs.|
|Source Title:||Welding Journal (Miami, Fla)|
|Appears in Collections:||Staff Publications|
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