Non-destructive testing of composite plates by holographic vibrometry

被引：8

作者：

Bruno, Francois ^{[1
]}

Laurent, Jerome ^{[1
]}

Prada, Claire ^{[1
]}

Lamboul, Benjamin ^{[2
]}

Passilly, Bruno ^{[2
]}

Atlan, Michael ^{[1
]}

机构：

[1] Univ Paris 07, Inst Langevin Fdn Pierre Gilles de Gennes,UMR 758, Ctr Natl Rech Sci CNRS,Univ Pierre & Marie Curie, Inst Natl Sante & Rech Med INSERM,Ecole Super Phy, F-75005 Paris, France

[2] Off Natl Etud & Rech Aeronaut ONERA, Composite Struct & Mat Dept, F-92322 Chatillon, France

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 15期

关键词：

SCANNING LASER VIBROMETRY; LAMB WAVES; DAMAGE DETECTION; VIBRATION ANALYSIS; RECONSTRUCTION; SHEAROGRAPHY; ELEMENT;

D O I：

10.1063/1.4871178

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on a wide-field optical monitoring method for revealing local delaminations in sandwich-type composite plates at video-rate by holographic vibrometry. Non-contact measurements of low frequency flexural waves is performed with time-averaged heterodyne holography. It enables narrowband imaging of local out-of-plane nanometric vibration amplitudes under sinusoidal excitation and reveals delamination defects, which cause local resonances of flexural waves. The size of the defect can be estimated from the first resonance frequency of the flexural wave and the mechanical parameters of the observed layer of the composite plate. (C) 2014 AIP Publishing LLC.

引用

页数：4

共 25 条

[1] TEMPORALLY MODULATED HOLOGRAPHY [J].