Exfoliation detection using structurally integrated piezoelectric ultrasonic transducers

被引：3

作者：

Mrad, N. ^{[1
]}

Liu, Z.

Kobayashi, M.

Liao, M.

Jen, C. K.

机构：

[1] Dept Natl Def, Def R&D Canada, Natl Def Headquarters, Ottawa, ON K1A 0R6, Canada

[2] Natl Res Council Canada, NDE Grp Struct, Inst Aerosp Res, Ottawa, ON K1A 0R6, Canada

[3] Natl Res Council Canada, Mat Performance Lab, Inst Aerosp Res, Ottawa, ON K1A 0R6, Canada

[4] Natl Res Council Canada, Intelligent Sensors Grp, Inst Ind Mat, Ottawa, ON K1A 0R6, Canada

[5] McGill Univ, Montreal, PQ H3A 2T5, Canada

[6] Concordia Univ, Montreal, PQ, Canada

来源：

INSIGHT | 2006年 / 48卷 / 12期

关键词：

Aluminum - Building materials - Corrosion - Nondestructive examination - Piezoelectric devices;

D O I：

10.1784/insi.2006.48.12.738

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Advanced sensors and sensor network technologies are shaping the future of civilian and military air platform health assessment and monitoring. In this paper, the feasibility of applying a structurally integrated thick-film piezoelectric ceramic ultrasonic transducer for monitoring exfoliation corrosion damage is investigated. The ultrasonic transducer can easily and reliably be deposited on metallic and polymeric structures using a sol-gel spray approach. The change in material thickness due to exfoliation damage is estimated using ultrasonic time-of-flight measurements. Experimental results from two aluminium (Al.7075-T6511) specimens are presented. In comparison, conventional water-coupled ultrasonic tests were also conducted to generate a thickness map for each selected specimen before the integrated transducers were fabricated. Close correlation was obtained between both conventional and integrated thick-film ultrasonic measurements, demonstrating the effectiveness of the integrated thick-film ultrasonic transducer for exfoliation corrosion damage assessment and monitoring.

引用

页码：738 / 742

页数：5