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Testing of 1 1/2 In., 6x30, H.R. (our Rope No. 7).
出版Canada Centre for Mineral and Energy Technology, Mining Research Laboratories, 1990
URLhttp://books.google.com.hk/books?id=z5yXywEACAAJ&hl=&source=gbs_api
註釋This report describes results from a project, undertaken in 1986, in response to requests by both the mining industry and the mine regulatory authorities, to examine continuing rope failures or near failures despite mandatory wire-rope examinations with electro-magnetic (EM) instruments at regular intervals. This is the 7th report in the series and analyzes the test results obtained both non-destructively and destructively on a 1 1/2 inch, 6x30, stranded hoist-rope. The rope was examined both in situ and on the shop-floor. In the field, EM testing was performed with one American (the LMA-250) and 3 Canadian (the Rotesco AC, Torescograph, and Magnograph) instruments. The same instruments, as well as a prototype version of a West German tester, were used on the shop-floor. The results are analyzed for repeatability, comparability, and levels of accuracy. Calculations are presented to document the legitimacy of comparing in situ EM test results with reel-to-reel results.