Structural health monitoring of shear waves in aluminum plates

Mannur J. Sundaresan; Wesley B. Williams

doi:10.1117/12.880584

15 April 2011 Structural health monitoring of shear waves in aluminum plates

Mannur J. Sundaresan, Wesley B. Williams

Proceedings Volume 7982, Smart Sensor Phenomena, Technology, Networks, and Systems 2011; 79820Z (2011) https://doi.org/10.1117/12.880584
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

In this research, the acoustic emissions from simulated crack growth and incremental crack growth in a cyclically loaded aluminum panel were detected by acoustic emission sensors. One of these sensors was comprised of an array of thin strips of piezoelectric material bonded to the specimen and electrically connected. The geometry of these sensor strip arrays and their orientation to the fracture site enabled the sensors to capture the shear component of the acoustic emission waveform. Cyclical loading was used to grow the crack, allowing sensor performance to be assessed in comparison to bonded and resonant sensors. The detection of the shear wave is of particular interest as the shear component of fretting events is often small, providing a possible means of discriminating between critical events (crack propagation) and sources of minimal concern (fretting). Shear modes were detected in the acoustic emissions from both the simulated crack growth and the crack growth due to cyclical loading.

Citation Download Citation

Mannur J. Sundaresan and Wesley B. Williams "Structural health monitoring of shear waves in aluminum plates", Proc. SPIE 7982, Smart Sensor Phenomena, Technology, Networks, and Systems 2011, 79820Z (15 April 2011); https://doi.org/10.1117/12.880584

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