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首页> 外文会议>19th International conference on adaptive structures and technologies 2008 >Damage prediction of composite plate for structural health monitoring
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Damage prediction of composite plate for structural health monitoring

机译：用于结构健康监测的复合板损伤预测

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In order to increase the safety and reliability of composite structures it is important that the structural health monitoring system has certain feature, such as the ability to identify the location and scope of impact, to analyze whether failure occurs, and eventually to asses the residual strength. The work focuses on the experimental and numerical analysis of unidirectional composite plate made of carbon fibers and epoxy resin subjected to random low velocity impact loading caused by a projectile. An array of sensors is attached to the opposite side of the plate and the corresponding strain dependencies are recorded during experiment. The goal is to identify the location of impact and the character of the induced force. The location of impact is assessed using the knowledge of velocities of waves traveling in all directions and finite element analysis in combination with mathematical optimization. The results of the numerical solution are then used in failure analysis. The failure analysis is utilizing the Puck's criterion to predict the occurrence of failure. The mathematical model of wave propagation was validated by experiment.
机译：为了提高复合结构的安全性和可靠性，重要的是结构健康监测系统必须具有某些功能，例如能够确定冲击的位置和范围，分析是否发生破坏并最终评估残余强度。 。这项工作着重于由碳纤维和环氧树脂制成的单向复合板承受由弹丸引起的随机低速冲击载荷的实验和数值分析。传感器阵列连接到板的相对侧，并且在实验期间记录了相应的应变依赖性。目的是确定撞击的位置和感应力的特性。利用在各个方向传播的波的速度知识以及有限元分析与数学优化相结合，可以评估冲击的位置。然后将数值解的结果用于故障分析。故障分析利用Puck准则来预测故障的发生。实验验证了波传播的数学模型。

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