Damage inspection of fiber reinforced polymer-concrete systems using a distant acoustic-laser NDE technique

被引：2
|
作者：
Yu, Tzu-Yang [1 ]
Haupt, Robert [2 ]
机构：
[1] Univ Massachusetts, Dept Civil & Environm Engn, FA107B,1 Univ Ave, Lowell, MA 01854 USA
[2] MIT, Lincoln Lab, Lexington, MA 02420 USA
来源：
NONDESTRUCTIVE CHARACTERIZATION FOR COMPOSITE MATERIALS, AEROSPACE ENGINEERING, CIVIL INFRASTRUCTURE, AND HOMELAND SECURITY 2010 | 2010年 / 7649卷
关键词：
Debonding detection; acoustic-laser NDE; parametric acoustic array (PAA); laser Doppler vibrometry (LDV); dynamic signature;
D O I：
10.1117/12.847630
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
In this paper, a distant acoustic-laser NDE technique is proposed, utilizing a high powered standoff parametric acoustic array (PAA) and laser Doppler vibrometry (LDV), for the detection of debonding and delamination in multi-layer composite systems. Fiber-reinforced polymer wrapped concrete cylinder specimens with artificial defect were manufactured and used in the validation of the technique. Low-frequency (50 Hz 2 kHz) and high-frequency (2 kHz 7 kHz) focused sound waves were generated by PAA, and surface dynamic signatures of the specimens were remotely measured by LDV. From the results it is found that the proposed technique successfully captures the presence of near-surface debonding/delamination.
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页数：8
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