Damage evaluation of concrete beams using forced vibration testing and machine learning

Yusuke Fujisaku, Hideki Naito, Sendai Japan, Kohko Inaba

研究成果: 書籍の章/レポート/Proceedings会議への寄与査読

抄録

A decrease in skilled infrastructure inspectors and the cost of maintenance are big issues in Japan. Thus, an effective, automated inspection system is much needed. In this study, local vibration testing, a nondestructive testing method, coupled with machine learning, was utilized. Local vibration testing has the benefit of detecting damage that exists in deep layers because the waves travel through-thickness of concrete members. Using a portable vibrator, local vibration testing was conducted on reinforced concrete (RC) beams to detect the location of damages within. The RC beam specimens had two types of damages: flexural cracks and shear cracks. Results showed that the damaged conditions' frequency responses varied from that of the intact condition. Additionally, high abnormality degrees were detected around the crack region. This implies that the location of damages can be identified from the data produced by local vibration testing. Though this method alone yields results, introducing automation would further increase the diagnostic efficiency. Therefore, machine learning was introduced. A non-supervised learning method was applied. Using this method, the damages were identified with a very high accuracy rate. This indicates that the combination of local vibration testing and non-supervised learning can produce an effective, automated inspection system for the integrity diagnosis of RC beams.

本文言語英語
ホスト出版物のタイトルBridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability - Proceedings of the 11th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2022
編集者Joan-Ramon Casas, Dan M. Frangopol, Jose Turmo
出版社CRC Press/Balkema
ページ1213-1219
ページ数7
ISBN(印刷版)9781032345314
DOI
出版ステータス出版済み - 2023
イベント11th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2022 - Barcelona, スペイン
継続期間: 2022 7月 112022 7月 15

出版物シリーズ

名前Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability - Proceedings of the 11th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2022

会議

会議11th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2022
国/地域スペイン
CityBarcelona
Period22/7/1122/7/15

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