Temperature dependence of electromechanical impedance based bond-line integrity monitoring

Prathamesh Bilgunde; Leonard J. Bond

doi:10.1117/12.2260365

5 April 2017 Temperature dependence of electromechanical impedance based bond-line integrity monitoring

Prathamesh Bilgunde, Leonard J. Bond

Proceedings Volume 10170, Health Monitoring of Structural and Biological Systems 2017; 101702Y (2017) https://doi.org/10.1117/12.2260365
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

Electromechanical impedance (EMI) is an important technique for bond-line integrity monitoring of adhesively bonded joints in automotive and aerospace structures. In the current work, numerical analysis of temperature sensitivity of the EMI technique is performed. The objective is to detect stiffness reduction of the adhesive in the presence of temperature and external mechanical load. Increase in the operating temperature can degrade the bonded piezoelectric material causing misinterpretation of the EMI data. EMI Signal features are numerically investigated to decouple the effect of load and temperature on the piezoelectric material in the mechanically loaded bonded joint. The computational results indicate higher dependence of EM resonance spectrum towards piezoelectric material matrix as compared to the tensile load applied on the bonded sample as the stiffness of adhesive is numerically varied.

Citation Download Citation

Prathamesh Bilgunde and Leonard J. Bond "Temperature dependence of electromechanical impedance based bond-line integrity monitoring", Proc. SPIE 10170, Health Monitoring of Structural and Biological Systems 2017, 101702Y (5 April 2017); https://doi.org/10.1117/12.2260365

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available