缺陷结构声结构相互作用研究

P.S Soumya, K. Surabhi, V. Krishnappa, G. Miranda, N. D. Dushyantha
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引用次数: 1

摘要

本文试图建立一种缺陷二维量化的方法。在本研究中,锡(Sn)是结构钢中常见的缺陷。使用COMSOL 4.2,创建了一个二维瞬态压力声学模型,该模型由70mm×70mm结构钢板组成,其沿其完美反射边界放置四个相距90度的声学收发器(每个提供5个周期的1Mhz顺序正弦激励)。从收发器获得的信号使用FFT技术进行后处理,并进一步处理以进行图像重建。通过统计分析,确定了缺陷的位置。缺陷实际中心位置与预测位置的平均偏差为(1.136mm, 0.979mm)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation of acoustic structure interaction for flawed structure
This paper is an attempt to establish a procedure for 2D quantization of a flaw. In this study, Tin (Sn) a regularly occurring flaw in structural Steel is considered. Using COMSOL 4.2, a 2D transient pressure acoustic model is created, which consists of a 70mm×70mm structural Steel plate with four acoustic transceivers 90 degree apart (each providing 5cycles of 1Mhz sequential sinusoidal excitation) placed along its perfectly reflecting boundary. The signals obtained from the transceivers are post processed using FFT techniques and are further processed for image reconstruction. From the statistical analysis the position of the flaw is determined. The mean deviation from the actual central location of the flaw to the predicted location is (1.136mm, 0.979mm).
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