Parallel implementation of the spectral element method is developed in which flat shell spectral elements are utilized for spatial domain representation. The implementation is realised by using Matlab Parallel Computing Toolbox and optimized for Graphics Processing Unit (GPU) computation. In this way, considerable computation speed-up can be achieved in comparison to computation on conventional processors. The implementation includes an interpolation of wavefield on a uniform grid. The method was tested on experimental data set available on the Open Guided Waves platform. The qualitative comparison was performed on full wavefield data, whereas quantitative comparison was made directly on signals of propagating Lamb waves registered by piezoelectric transducers. In both cases, good agreement between numerical and experimental results was achieved. The proposed method is particularly useful for structural health monitoring algorithms in which signal parameters are required such as...

中文翻译：

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基于导波的结构健康监测的并行谱元方法

光谱元素方法的并行实现得到发展，其中将扁平壳光谱元素用于空间域表示。该实现是通过使用Matlab并行计算工具箱实现的，并针对图形处理单元（GPU）进行了优化。这样，与传统处理器上的计算相比，可以实现相当大的计算速度。该实现包括在均匀网格上对波场进行插值。该方法在Open Guided Waves平台上可用的实验数据集上进行了测试。定性比较是对整个波场数据进行的，而定量比较是直接对压电换能器记录的传播兰姆波信号进行的。在这两种情况下，数值和实验结果之间都取得了很好的一致性。