Beam shaping to enhance zero group velocity Lamb mode generation in a composite plate and nondestructive testing application

详细信息    查看全文

• 作者：Fré ; dé ; ric Faë ; se^a ; ^b ; Samuel Raetz^b ; ^{samuel.raetz@univ-lemans.fr} ; Nikolay Chigarev^b ; Charfeddine Mechri^b ; James Blondeau^b ; Benjamin Campagne^c ; Vitalyi E. Gusev^b ; Vincent Tournat^b ; ¹ ; ^{vincent.tournat@univ-lemans.fr}
• 关键词：Laser ultrasonics ; Composite materials ; Zero Group Velocity Lamb modes ; NDT
• 刊名：NDT & E International
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：85
• 期：Complete
• 页码：13-19
• 全文大小：1634 K
• 卷排序：85

文摘

ZGV Lamb mode enhancement thanks to the use of a laser beam shaping mask. Subsurface flaw detection in composite material using ZGV Lamb mode. Defect detection by a non contact laser ultrasonic method in a composite plate. Proof of principle in using ZGV Lamb mode to characterize subsurface flaw.