TY - JOUR
T1 - Multi-dimensional signal processing and mode tracking approach for guided wave based damage localization in X-COR sandwich composite
AU - Li, Guoyi
AU - Chattopadhyay, Aditi
N1 - Funding Information:
The authors would like to gratefully acknowledge the Adaptive Intelligent Materials and Systems (AIMS) center with the co-sponsor, The Boeing Company, for funding this work through the Industry Consortium Core Project. The authors appreciate the continuous guidance and help, including access to the facility for fabrication of the X-COR panels, from technical monitor, Dr. Daniel W Huff.
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/9/1
Y1 - 2018/9/1
N2 - This paper presents a real-time signal processing and damage localization framework for ultrasonic guided wave based structural health monitoring of X-COR sandwich composites with a reference-free perspective. The high attenuation nature of X-COR composite significantly limits the ability to detect damage-induced reflected waveforms. Therefore, a novel multi-dimensional signal processing technique, coupled with a mode tracking approach for identifying trajectories and locating wave sources of all wave modes, including damage-induced converted modes, is proposed. The developed framework is experimentally validated using two internal damage scenarios: facesheet delamination and foam core separation. Results indicate that the framework offers not only high accuracy for locating internal damage positions, but also insights into guided wave propagation behaviors in highly complex composites such as the X-COR sandwich composite.
AB - This paper presents a real-time signal processing and damage localization framework for ultrasonic guided wave based structural health monitoring of X-COR sandwich composites with a reference-free perspective. The high attenuation nature of X-COR composite significantly limits the ability to detect damage-induced reflected waveforms. Therefore, a novel multi-dimensional signal processing technique, coupled with a mode tracking approach for identifying trajectories and locating wave sources of all wave modes, including damage-induced converted modes, is proposed. The developed framework is experimentally validated using two internal damage scenarios: facesheet delamination and foam core separation. Results indicate that the framework offers not only high accuracy for locating internal damage positions, but also insights into guided wave propagation behaviors in highly complex composites such as the X-COR sandwich composite.
KW - Damage localization
KW - Signal processing
KW - Structural health monitoring
KW - Ultrasonic guided waves
KW - Wave mode tracking
KW - X-COR sandwich composites
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U2 - 10.1016/j.ymssp.2018.02.039
DO - 10.1016/j.ymssp.2018.02.039
M3 - Article
AN - SCOPUS:85056219713
SN - 0888-3270
VL - 109
SP - 134
EP - 149
JO - Mechanical Systems and Signal Processing
JF - Mechanical Systems and Signal Processing
ER -