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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
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- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.27 No.5
- 발행연도
- 2021.1
- 수록면
- 761 - 768 (8page)
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This paper presents crack opening phenomenon evaluation using digital image correlation (DIC) with a statistically optimized subset size. In conventional DIC analysis, the subset sizes varying from several pixels to more than hundred pixels have been often selected by experts' subjective judgement based on conventional subset size determination algorithms. Since these conventional subset size determination algorithms, however, calculate speckle pattern features at a certain location of a single target image, it is difficult to consider not only all speckle pattern features within region of interest (ROI) but also the random measurement noises during the digital image acquisition process. To overcome the technical limitation, a statistical optimization algorithm of the subset size, which calculates the optimal subset size by the 3-loop iteration of normalized cross correlation within the entire ROI, is newly proposed. In addition, the optimal subset-based DIC analysis is applied to crack opening phenomenon evaluation in a mock-up concrete specimen under step loading conditions. The validation test results show 3.6 <i>μm</i> maximum error compared with the ground truth which is obtained by direct measurement, while a conventional subset size determination algorithm-based DIC analysis produces the maximum error of 62.7 <i>μm</i>.
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참고문헌 (29)
참고문헌 신청
Yun-Kyu An / 2015 / Visualization of non-propagating Lamb wave modes for fatigue crack evaluation / Journal of Applied Physics 117(11):114904
Yun-Kyu An / 2013 / Complete noncontact laser ultrasonic imaging for automated crack visualization in a plate / Smart Materials and Structures 22(2):025022
Yun-Kyu An / 2015 / Line laser lock-in thermography for instantaneous imaging of cracks in semiconductor chips / Optics and Lasers in Engineering 73:128~136
Marie Bohacova / 2013 / Methodology of short fatigue crack detection by the eddy current method in a multi-layered metal aircraft structure / Engineering Failure Analysis 35(15):597~608
Stefano Caizzone / 2015 / Wireless Passive RFID Crack Width Sensor for Structural Health Monitoring / IEEE Sensors Journal 15(12):6767~6774
Yun-Kyu An / 2013 / Complete noncontact laser ultrasonic imaging for automated crack visualization in a plate / Smart Materials and Structures 22(2):025022
Yun-Kyu An / 2015 / Line laser lock-in thermography for instantaneous imaging of cracks in semiconductor chips / Optics and Lasers in Engineering 73:128~136
Marie Bohacova / 2013 / Methodology of short fatigue crack detection by the eddy current method in a multi-layered metal aircraft structure / Engineering Failure Analysis 35(15):597~608
Stefano Caizzone / 2015 / Wireless Passive RFID Crack Width Sensor for Structural Health Monitoring / IEEE Sensors Journal 15(12):6767~6774
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