LOOSENESS DETECTION SENSOR AND LOOSE BOLT IDENTIFICATION METHOD

摘要

A ring-shaped sensor for detecting looseness of a plurality of bolts 4 and nuts 6 that fix two or more components, said sensor comprising: a first conductive layer 3a that has a plurality of holes H through which the bolts 4 are passed, and that is electrically connected to any of the neck part 41a of the bolts 41, the surface of one component 1, and the surface of the other component 2; a non-conductive layer 3b that is laminated to the first conductive layer 3a and has the same planar shape as the first conductive layer 3a; and a second conductive layer 3c that is disposed oppositely from the first conductive layer 3a with the non-conductive layer 3b therebetween, and that is electrically connected to any of the surface of the one component 1, the surface of the other component 2, and the nuts 6.