BONDED STRUCTURE AND BONDING-CONDITION DETECTING METHOD

摘要

A bonded structure (10) includes a laminate (12A), a laminate (12B), an adhesive (14) that bonds together the laminate (12A) and the laminate (12B), and an optical fiber (16) sandwiched between the laminate (12A) and the laminate (12B). When a pressure is applied to the optical fiber (16) only from a predetermined direction, the sectional shape of the optical fiber (16) changes to an elliptical shape, so that birefringence occurs, whereby the shape of the light spectrum changes so as to have multiple (e.g., two) peaks. The optical fiber (16) is used as a sensor for detecting the bonding condition between the laminate (12A) and the laminate (12B) based on this birefringence. Thus, with the bonded structure 10, it is possible to determine whether members are bonded together appropriately.

主权项

1. A bonded structure comprising:
a first member; a second member; an adhesive that bonds together the first member and the second member; and an optical fiber sandwiched between the first member and the second member, wherein the bonding condition between the first member and the second member is detected based on birefringence of the optical fiber.