IMPACT WAVE-PROPAGATION IN A THICK COMPOSITE PLATE USING DYNAMIC MOIRE INTERFEROMETRY

被引：9
作者：
EPSTEIN, JS
DEASON, VA
ABDALLAH, MG
机构：
[1] IDAHO NATL ENGN LAB,APPL OPT GRP,IDAHO FALLS,ID 83415
[2] HERCULES ADV MAT & SYST CO,ADV COMPOSITES TECHNOL,MAGNA,UT 84044
来源：
OPTICS AND LASERS IN ENGINEERING | 1992年 / 17卷 / 01期
关键词：
D O I：
10.1016/0143-8166(92)90025-3
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Dynamic moire interferometry is employed to study the localized impact response of a thick composite plate. The plate, 15 mm thick by 50 mm wide by 152 mm in length, consists of 0/90/0(3) graphite fibers in a Hercules AS4/3501-6 carbon/graphite pre-preg. The plate is impacted under three-point bending. 1200 l/mm gratings are replicated on the free plate edge directly under the impact site; a multiplication of two is used to obtain an in-plane displacement sensitivity of 0.4 mm. Displacements are interrogated approximately every 10-mu-s perpendicular to the 0-degrees fiber direction. Initial results outline the localized displacement directly under the impact tup as a function of time. These displacements facilitate an understanding of the resistance of thick composite plates to damage from sharp impact.
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页码：35 / 46
页数：12
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