Efficient laser generation of Lamb waves

被引：8
|
作者：
Huke, Philipp [1 ]
Schroeder, Martin [1 ]
Hellmers, Sandra [1 ]
Kalms, Michael [1 ]
Bergmann, Ralf B. [1 ,2 ]
机构：
[1] Bremer Inst Angew Strahltech GmbH, D-28359 Bremen, Germany
[2] Univ Bremen, Fac Phys & Elect Engn, D-28359 Bremen, Germany
来源：
OPTICS LETTERS | 2014年 / 39卷 / 20期
关键词：
NARROW-BAND;
D O I：
10.1364/OL.39.005795
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report about the efficient generation of Lamb waves for nondestructive testing (NDT) of carbon fiber reinforced plastics (CFRP) with spatially formed laser beams. Therefore we describe the successful introduction of a liquid crystal on silicon (LCoS)-based spatial light modulator (SLM) to create predetermined spatial laser light distributions for a flexible Lamb wave excitation. We investigate the influence of the formed beam profiles of the generation laser to the resulting Lamb wave. The further objective of the study is the close adaptation of the laser-generated guided waves to a specific testing situation and an optimized defect evaluation. (C) 2014 Optical Society of America
引用
收藏
页码：5795 / 5797
页数：3
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