Numerical simulation of ultrasonic time reversal on defects in carbon fibre reinforced polymer

被引：8
作者：
Lints, M. [1 ,2 ]
Salupere, A. [1 ]
Dos Santos, S. [2 ]
机构：
[1] Tallinn Univ Technol, Sch Sci, Dept Cybernet, Akadeemia Tee 21, EE-12618 Tallinn, Estonia
[2] INSA Ctr Val de Loire, Blois Campus,3 Rue Chocolaterie CS 23410, F-41034 Blois, France
来源：
WAVE MOTION | 2020年 / 94卷
关键词：
Contact acoustic nonlinearity; Resonance excitation; Ultrasound; Delayed time reversal; Carbon fibre reinforced polymer; WAVE MODULATION SPECTROSCOPY; DELAMINATIONS; NONLINEARITY; DAMAGE;
D O I：
10.1016/j.wavemoti.2020.102526
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
An ultrasonic non-destructive testing method is under development for detecting small scale damage in carbon fibre reinforced polymer. This method relies on signal processing to detect the presence of nonclassical nonlinear signature of microcracking or delamination in the material. Using reciprocal time reversal with nonlinear spectroscopy, the ultrasound can be focused on defect which is in unknown location in test object and may be far from the sending or the receiving transducer. With spectral analysis of defect and delayed time reversal input, the defect can be excited to larger displacement amplitudes by using its resonance. The study is conducted using finite element simulations in two dimensions for carbon fibre composite plate. (C) 2020 Elsevier B.V. All rights reserved.
引用
收藏
页数：10
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