Make a Trial Rotating-Bending Fatigue Tester for Thick Wires on a Experimental Basis.
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概要
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In order to evaluate the fatigue strength of wires of φ8mm or less, Nakamura-type rotating-bending fatigue tester has been widely used. For thick wires of φ8mm or more, Ono-type rotating-bending fatigue tester has been widely used. However, it has problems in terms of usability because a test pieces of special shape should be made and the axis of rotation should be set with the extreme precision when the test piece is installed.Therefore, we have developed a rotating-bending fatigue tester of 4-point bending for thick wires of φ8-φ10mm, consulting the good usability of Nakamura-type rotating-bending fatigue tester. This tester is superior to the conventional Ono-type rotating-bending fatigue tester in terms of simplicity and rapidity, because thick wires can be used as it is without any machining.In this paper, the outline of this tester and its applications are discussed.
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