TY - JOUR
T1 - A nondestructive evaluation and structural health monitoring framework for X-COR sandwich composites
AU - Li, Guoyi
AU - Neerukatti, Rajesh Kumar
AU - Chattopadhyay, Aditi
AU - Rajadas, Abhishek
AU - Huff, Daniel W.
N1 - Funding Information:
The authors thank the funding source provided by Adaptive Intelligent Materials and Systems (AIMS) Industry Consortium Core Project; co-sponsor: The Boeing Company (Technical Monitor: Daniel W Huff).
Publisher Copyright:
Copyright © 2018 by AHS International, Inc. All rights reserved.
PY - 2018
Y1 - 2018
N2 - A combination of nondestructive evaluation (NDE) and structural health monitoring technique has been used to detect and localize in situ damage in X-COR sandwich composites. The NDE techniques, flash thermography and ultrasonic C-Scan, were used, and the inspection results showed promising capabilities as well as their inherent limitations. Subsequently, a guided wave based active interrogation technique was used to enable real-time damage detection and localization capabilities. Macro fiber composite and piezoelectric wafers were used for actuation and sensing, and the interaction of guided waves with the primary damage modes, delaminations and foam core separations, were studied. The results showed that delaminations lead to the guided wave mode conversion phenomenon within the material discontinuity area. A multidimensional signal processing technique, which was developed with a real-time and reference-free perspective, was used to analyze the converted wave modes in the time-space domain for damage localization. The results indicate that the converted wave mode is an effective indicator of in situ damage, especially when the received signal contains wave modes transmitted from multiple source locations.
AB - A combination of nondestructive evaluation (NDE) and structural health monitoring technique has been used to detect and localize in situ damage in X-COR sandwich composites. The NDE techniques, flash thermography and ultrasonic C-Scan, were used, and the inspection results showed promising capabilities as well as their inherent limitations. Subsequently, a guided wave based active interrogation technique was used to enable real-time damage detection and localization capabilities. Macro fiber composite and piezoelectric wafers were used for actuation and sensing, and the interaction of guided waves with the primary damage modes, delaminations and foam core separations, were studied. The results showed that delaminations lead to the guided wave mode conversion phenomenon within the material discontinuity area. A multidimensional signal processing technique, which was developed with a real-time and reference-free perspective, was used to analyze the converted wave modes in the time-space domain for damage localization. The results indicate that the converted wave mode is an effective indicator of in situ damage, especially when the received signal contains wave modes transmitted from multiple source locations.
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M3 - Conference article
AN - SCOPUS:85054531460
SN - 1552-2938
VL - 2018-May
JO - Annual Forum Proceedings - AHS International
JF - Annual Forum Proceedings - AHS International
T2 - 74th American Helicopter Society International Annual Forum and Technology Display 2018: The Future of Vertical Flight
Y2 - 14 May 2018 through 17 May 2018
ER -