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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.28 No.4
- 발행연도
- 2021.10
- 수록면
- 567 - 578 (12page)
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This study proposes a combination of nondestructive testing methods for detecting soil cavities behind retaining walls, which adversely affect the stability of the sloping ground or retaining structures. An experimental study is conducted using a soil chamber filled with dry sands retained by a concrete wall plate. A hemispherical soil cavity is simulated just behind the wall plate, and elastic wave reflections of impacts on the wall are measured using accelerometers. The measured elastic waves are analyzed using the signal energy in time domain and predominant frequency and mobility spectrum in frequency domain. In addition, spatiotemporal changes in the surface of the wall during heating and cooling sequences are monitored using infrared thermography. The captured thermal image is then used for identifying the cavity. Experimental results show that the cavity leads to increases in the signal energy, predominant frequency, and flexibility in the mobility spectrum. The contrasts in the thermal images effectively reveal the shapes and locations of the soil cavity. This study demonstrates that the hybrid testing method that conducts a careful inspection by elastic waves on areas suspected in the preliminary scanning by the infrared thermography can be competitive and effective for detecting soil cavities.
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참고문헌 (51)
참고문헌 신청
A. Rahman Al-Kassir / 2005 / Thermographic study of energetic installations / Applied Thermal Engineering 25(2-3):183~190
2016 / ASTM C1740, Standard Practice for Evaluating the Condition of Concrete Plates Using the Impulse-response Method / ASTM International
Avdelidis, N. P. / 2011 / Infrared thermography as a nondestructive tool for materials characterisation and assessment / Proceedings of SPIE
Robert Bogue / 2013 / Sensors for condition monitoring: a review of technologies and applications / Sensor Review 33(4):295~299
Brooks, H. / 2010 / Basics of Retaining Wall Design: A Design Guide for Earth Retaining Structure / BHA Publication, Inc
2016 / ASTM C1740, Standard Practice for Evaluating the Condition of Concrete Plates Using the Impulse-response Method / ASTM International
Avdelidis, N. P. / 2011 / Infrared thermography as a nondestructive tool for materials characterisation and assessment / Proceedings of SPIE
Robert Bogue / 2013 / Sensors for condition monitoring: a review of technologies and applications / Sensor Review 33(4):295~299
Brooks, H. / 2010 / Basics of Retaining Wall Design: A Design Guide for Earth Retaining Structure / BHA Publication, Inc
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