Differential Evolution: An Inverse Approach for Crack Detection

Q2 Physics and Astronomy

Advances in Acoustics and Vibration Pub Date : 2013-11-13 DOI:10.1155/2013/321931

P. K. Jena, D. Thatoi, D. Parhi

引用次数: 14

Abstract

This paper presents a damage detection technique combining analytical and experimental investigations on a cantilever aluminium alloy beam with a transverse surface crack. Firstly, the first three natural frequencies were determined using analytical methods based on strain energy release rate. Secondly, an experimental method was adopted to validate the theoretical findings. The damage location and severity assessment is the third stage and is formulated as a constrained optimisation problem and solved using the proposed differential evolution (DE) algorithm based on the measured and calculated first three natural frequencies as inputs. Numerical simulation studies indicate that the proposed method is robust and can be used effectively in structural health monitoring (SHM) applications.

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差分演化:裂纹检测的一种逆方法

提出了一种分析与实验相结合的具有横向表面裂纹的铝合金悬臂梁损伤检测方法。首先，采用基于应变能释放率的解析方法确定前三个固有频率;其次，采用实验方法对理论结果进行验证。损伤定位和严重程度评估是第三阶段，它被制定为一个约束优化问题，并使用基于测量和计算的前三个固有频率作为输入的差分进化(DE)算法来解决。数值仿真研究表明，该方法具有较强的鲁棒性，可以有效地应用于结构健康监测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Advances in Acoustics and Vibration ACOUSTICS-

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期刊介绍： The aim of Advances in Acoustics and Vibration is to act as a platform for dissemination of innovative and original research and development work in the area of acoustics and vibration. The target audience of the journal comprises both researchers and practitioners. Articles with innovative works of theoretical and/or experimental nature with research and/or application focus can be considered for publication in the journal. Articles submitted for publication in Advances in Acoustics and Vibration must neither have been published previously nor be under consideration elsewhere. Subject areas include (but are not limited to): Active, semi-active, passive and combined active-passive noise and vibration control Acoustic signal processing Aero-acoustics and aviation noise Architectural acoustics Audio acoustics, mechanisms of human hearing, musical acoustics Community and environmental acoustics and vibration Computational acoustics, numerical techniques Condition monitoring, health diagnostics, vibration testing, non-destructive testing Human response to sound and vibration, Occupational noise exposure and control Industrial, machinery, transportation noise and vibration Low, mid, and high frequency noise and vibration Materials for noise and vibration control Measurement and actuation techniques, sensors, actuators Modal analysis, statistical energy analysis, wavelet analysis, inverse methods Non-linear acoustics and vibration Sound and vibration sources, source localisation, sound propagation Underwater and ship acoustics Vibro-acoustics and shock.