Abstract
Acoustic emission (AE) method of the destruction aspect of the glass fiber reinforced resin was measured by applying it. In the actual experiment, a board of same composition as the fiber post sample was used. The examination did three point bend test with measuring AE after thermal cycle (0,5000 and 10000 times) had been given to the sample. The generation style of AE under each condition was admitted and the difference of the destruction aspect was admitted differing.