繊維強化プラスチック中のAEの伝搬挙動

抄録

Acoustic Emission (AE) propagation in thin anisotropic plates, such as thin Carbon Fiber Reinforced Plastics (CFRP), was studied. AE in thin plates propagates as Lamb wave. In the anisotropic thin plates, AE energy is concentrated to anisotropic axis, even when same energy is released to all directions at AE source. AE amplitudes during the propagation were calculated for various laminated CFRPs with different stacking sequences. As a result, it was found that AE amplitude changes with AE propagation angle and becomes 10 times larger at the maximum compared to the minimum value.