複合積層板の減衰性能と強度に関する研究

Research on damping performance and strength of the composite laminate.

抄録

本稿では，複合積層板の制振性能と強度に及ぼすEガラス繊維体積率と敷設角度の影響を総合的に分析した。繊維の敷設角度を大きくし，ガラス繊維の体積分率を小さくすることで，複合積層板の減衰性能は向上するが，積層板の引張強度は低下することがわかった。繊維の敷設角度を小さくし，ガラス繊維の体積分率を大きくすることで，複合積層板の引張強度は向上するが，積層板の減衰特性は低下することがわかった。また，複合積層板の減衰実験では，外部減衰源の影響を避けるために，本稿では真空非接触減衰試験法を採用し，複合積層板の減衰実験結果に及ぼす空気の減衰の影響を比較分析した。比較実験の結果、空気の減衰は複合積層板の減衰に非常に明白な影響を与え、特に複合積層板の減衰が小さい場合には、空気の減衰の影響が大きくなることがわかった。

In this paper, the influence of E-glass fiber volume fraction and laying angle on the damping and strength of composite laminates was comprehensively analyzed. By increasing the fiber laying angle and reducing the glass fiber volume fraction, the damping capacity of the composite laminate was increased, but the tensile strength of the laminate was reduced; By reducing the fiber laying angle and increasing the glass fiber volume fraction, the tensile strength of the composite laminate was increased, but the damping characteristics of the laminate was reduced. In addition, in the damping experiment of composite laminates, in order to avoid the influence of external damping sources, the vacuum non-contact damping test method was adopted in this paper, and the influence of air damping on the damping experiment results of composite laminates was comparatively analyzed. The results of comparative experiments showed that air damping had a very obvious influence on the damping of composite laminates, especially when the damping of composite laminates was small, the influence of air damping would be greater.