TY - GEN
T1 - Millimeter-Wave SAR Imaging of Composites Using Rectangular Aperture Probe
AU - Rahman, Mohammed Saif Ur
AU - Mustapha, Ademola Akeem
AU - Abou-Khousa, Mohamed A.
N1 - Funding Information:
This paper is based upon work supported by Khalifa University of Science and Technology, Abu Dhabi, UAE, under award No. CIRA-2020-037.
Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - In this paper, a rectangular aperture probe operating in the Q-band (33-50 GHz) frequency range is utilized for imaging multilayer fiberglass and honeycomb composite samples of different thicknesses. A synthetic aperture radar (SAR) focusing algorithm is also applied to the images to enhance the image quality and focus at desired depths to obtain better indications of sub-surface defects. It has been demonstrated that industry relevant and practical defects encompassing disbond, delamination, crushed core, moisture intrusion, etc. can reliably be detected, even when scanning from a higher standoff distance (SOD). The advantage of applying focusing at desired depths is illustrated through images that are higher in quality when compared to the raw images and provide clearer and relatively accurate depictions of defects.
AB - In this paper, a rectangular aperture probe operating in the Q-band (33-50 GHz) frequency range is utilized for imaging multilayer fiberglass and honeycomb composite samples of different thicknesses. A synthetic aperture radar (SAR) focusing algorithm is also applied to the images to enhance the image quality and focus at desired depths to obtain better indications of sub-surface defects. It has been demonstrated that industry relevant and practical defects encompassing disbond, delamination, crushed core, moisture intrusion, etc. can reliably be detected, even when scanning from a higher standoff distance (SOD). The advantage of applying focusing at desired depths is illustrated through images that are higher in quality when compared to the raw images and provide clearer and relatively accurate depictions of defects.
KW - composites
KW - microwave imaging
KW - non-destructive testing
KW - synthetic aperture radar(SAR).
UR - http://www.scopus.com/inward/record.url?scp=85124369969&partnerID=8YFLogxK
U2 - 10.1109/IST50367.2021.9651421
DO - 10.1109/IST50367.2021.9651421
M3 - Conference contribution
AN - SCOPUS:85124369969
T3 - IST 2021 - IEEE International Conference on Imaging Systems and Techniques, Proceedings
BT - IST 2021 - IEEE International Conference on Imaging Systems and Techniques, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE International Conference on Imaging Systems and Techniques, IST 2021
Y2 - 24 August 2021 through 26 August 2021
ER -