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超声lamb波在缺陷铝板中的有限元模拟

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摘要 超声lamb波无损检测技术是薄板结构应用非常广泛的一种技术,本文通过对自由边界条件下铝板的频率特征方程进行求解,得出lamb波的频散曲线。根据频散曲线选择频厚积在1 MHz·mm对4mm厚铝板的缺陷检测,通过有限元仿真出的缺陷的位置并和实际位置相比较,以验证有限元分析的有效性。
出处 《内燃机与配件》 2017年第1期148-149,共2页 Internal Combustion Engine & Parts
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