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Wire rope research: analysis of bending fatigue in a 2-Inch IWRC wire rope.

Authors
Miscoe-AJ; McKewan-WM
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9466, 1993 Jan; :1-14
NIOSHTIC No.
10012109
Abstract
A unique machine for inducing bending fatigue in wire ropes was built at the U.S. Bureau of Mines' Pittsburgh Research Center. This machine can produce nine levels of degradation through repetitive cycling of long samples of wire ropes of the types used in the mining industry. The report provides an analysis of the results of the first wire rope to be fatigued on this machine. These results have indicated that as a wire rope accumulates bending cycles, its strength first decreases because of wear and then increases due to cold working of the wires. As the amount of cold working increases, more and more of the embrittled wires break and the strength of the rope decreases rapidly. In this test, application of several of the regulatory retirement criteria to various sections of the rope suggests that there may be some inconsistency among them.
Keywords
Mining-industry; Mining-equipment; Failure-analysis; Fatigue-properties; Tensile-strength
Publication Date
19930101
Document Type
Report of Investigations
Fiscal Year
1993
NTIS Accession No.
PB93-207595
NTIS Price
A03
Identifying No.
RI-9466
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9466
State
PA
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