US 5,343,733 A · Abrasion testing method

Abstract

An abrasion evaluation test method is applicable to a case where a rotating disk and a friction member to be brought into sliding contact with the disk contact and abrade each other even while a brake is not applied due to vibrations and mounting errors. The disk is an actual disk, and the friction member is a test piece which is smaller than the actual friction member. The test piece is pressed against a frictional surface of the disk at a predetermined position, thereof. The abrasion of the disk is measured with respect to a portion of the frictional surface that is out of contact with the test piece, while the abrasion of the friction member is obtained from the difference in thickness of the test piece before and after testing.

Claims5

Dependent claims

A testing method for evaluating the abrasion of rotating disks and friction members of brakes, wherein a friction member and a respective rotating disk of a brake contact each other and abrade while the brake is not applied due to vibrations and mounting errors, said testing method comprising the steps of:

pressing a test piece friction member, which is smaller than an actual friction member, against a portion of a frictional surface of an actual disk at a predetermined position, maintaining a portion of the frictional surface out of contact with the test piece friction member and rotating the test piece friction member and the actual disk relative to each other;
measuring the degree of abrasion of the disk with respect to the portion of the frictional surface maintained out of contact with the test piece friction member;
and
obtaining the degree of abrasion of the test piece friction member by determining the difference in the thickness of said test piece friction member before and after said step of pressing.

1 more element

Dependencies are inferred from the claim text.

Abrasion testing method

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Abrasion testing method

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Abstract

Claims5