| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of estimating use environment of a friction body capable of accurately estimating use environment (existence of a fade phenomenon in the friction body) with simple structure. SOLUTION: Use environment of a friction body 20 to be brought into contact with a rotor 10 rotating with a wheel and to be separated therefrom (existence of a fade phenomenon in the friction body 20) is estimated after using the friction body 20. The friction body 20 includes: a friction member 30 to be brought into contact with the rotor 10 and to be separated therefrom; a back plate 40 supporting the friction member 30; and a temperature display member 50 arranged in the back plate 40 and to be irreversibly changed in color thereof in response to the temperature. A plurality of temperature display members 50 are arranged, and respectively formed from a material different in the color changing temperature. Estimation is performed based on the abrasion amount of the friction member 30 and color of the temperature display member 50 after using the friction body 20. COPYRIGHT: (C)2010,JPO&INPIT
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