Monitoring damage using acoustic emission source location and computational geometry in reinforced concrete beams

Non-destructive testing in reinforced concrete (RC) for damage detection is still limited to date. In monitoring the damage in RC, 18 beam specimens with varying water cement ratios and reinforcements were casted and tested using a four-point bending test. Repeated step loads were designed and at ea...

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Main Authors: Ongpeng, Jason Maximino C., Oreta, Andres Winston C., Hirose, Sohichi
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Published: Animo Repository 2018
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Online Access:https://animorepository.dlsu.edu.ph/faculty_research/1336
https://animorepository.dlsu.edu.ph/context/faculty_research/article/2335/type/native/viewcontent
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spelling oai:animorepository.dlsu.edu.ph:faculty_research-23352021-06-22T07:52:55Z Monitoring damage using acoustic emission source location and computational geometry in reinforced concrete beams Ongpeng, Jason Maximino C. Oreta, Andres Winston C. Hirose, Sohichi Non-destructive testing in reinforced concrete (RC) for damage detection is still limited to date. In monitoring the damage in RC, 18 beam specimens with varying water cement ratios and reinforcements were casted and tested using a four-point bending test. Repeated step loads were designed and at each step load acoustic emission (AE) signals were recorded and processed to obtain the acoustic emission source location (AESL). Computational geometry using a convex hull algorithm was used to determine the maximum volume formed by the AESL inside the concrete beam in relation to the load applied. The convex hull volume (CHV) showed good relation to the damage encountered until 60% of the ultimate load at the midspan was reached, where compression in the concrete occurred. The changes in CHV from 20 to 40% and 20 to 60% load were five and 13 times from CHV of 20% load for all beams, respectively. This indicated that the analysis in three dimensions using CHV was sensitive to damage. In addition, a high water-cement ratio exhibited higher CHV formation compared to a lower water-cement ratio due to its ductility where the movement of AESL becomes wider. © 2018 by the authors. 2018-01-26T08:00:00Z text text/html https://animorepository.dlsu.edu.ph/faculty_research/1336 https://animorepository.dlsu.edu.ph/context/faculty_research/article/2335/type/native/viewcontent Faculty Research Work Animo Repository Concrete beams—Testing Reinforced concrete—Testing Acoustic emission testing Civil Engineering
institution De La Salle University
building De La Salle University Library
continent Asia
country Philippines
Philippines
content_provider De La Salle University Library
collection DLSU Institutional Repository
topic Concrete beams—Testing
Reinforced concrete—Testing
Acoustic emission testing
Civil Engineering
spellingShingle Concrete beams—Testing
Reinforced concrete—Testing
Acoustic emission testing
Civil Engineering
Ongpeng, Jason Maximino C.
Oreta, Andres Winston C.
Hirose, Sohichi
Monitoring damage using acoustic emission source location and computational geometry in reinforced concrete beams
description Non-destructive testing in reinforced concrete (RC) for damage detection is still limited to date. In monitoring the damage in RC, 18 beam specimens with varying water cement ratios and reinforcements were casted and tested using a four-point bending test. Repeated step loads were designed and at each step load acoustic emission (AE) signals were recorded and processed to obtain the acoustic emission source location (AESL). Computational geometry using a convex hull algorithm was used to determine the maximum volume formed by the AESL inside the concrete beam in relation to the load applied. The convex hull volume (CHV) showed good relation to the damage encountered until 60% of the ultimate load at the midspan was reached, where compression in the concrete occurred. The changes in CHV from 20 to 40% and 20 to 60% load were five and 13 times from CHV of 20% load for all beams, respectively. This indicated that the analysis in three dimensions using CHV was sensitive to damage. In addition, a high water-cement ratio exhibited higher CHV formation compared to a lower water-cement ratio due to its ductility where the movement of AESL becomes wider. © 2018 by the authors.
format text
author Ongpeng, Jason Maximino C.
Oreta, Andres Winston C.
Hirose, Sohichi
author_facet Ongpeng, Jason Maximino C.
Oreta, Andres Winston C.
Hirose, Sohichi
author_sort Ongpeng, Jason Maximino C.
title Monitoring damage using acoustic emission source location and computational geometry in reinforced concrete beams
title_short Monitoring damage using acoustic emission source location and computational geometry in reinforced concrete beams
title_full Monitoring damage using acoustic emission source location and computational geometry in reinforced concrete beams
title_fullStr Monitoring damage using acoustic emission source location and computational geometry in reinforced concrete beams
title_full_unstemmed Monitoring damage using acoustic emission source location and computational geometry in reinforced concrete beams
title_sort monitoring damage using acoustic emission source location and computational geometry in reinforced concrete beams
publisher Animo Repository
publishDate 2018
url https://animorepository.dlsu.edu.ph/faculty_research/1336
https://animorepository.dlsu.edu.ph/context/faculty_research/article/2335/type/native/viewcontent
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