Automatic detection and assessment of crack development in ultra-high performance concrete in the spatial and Fourier domains

扫码查看

原文链接

维普
万方数据

外文摘要：Automatic detection and assessment of surface cracks are beneficial for understanding the mechanical performance of ultra-high performance concrete(UHPC).This study detects crack evolution using a novel dynamic mode decomposition(DMD)method.In this method,the sparse matrix'determined'from images is used to reconstruct the foreground that contains cracks,and the global threshold method is adopted to extract the crack patterns.The application of the DMD method to the three-point bending test demonstrates the efficiency in inspecting cracks with high accuracy.Accordingly,the geometric features,including the area and its projection in two major directions,are evaluated over time.The relationship between the geometric properties of cracks and load-displacement curves of UHPC is discussed.Due to the irregular shape of cracks in the spatial domain,the cracks are then transformed into the Fourier domain to assess their development.Results indicate that crack patterns in the Fourier domain exhibit a distinct concentration around a central position.Moreover,the power spectral density of cracks exhibits an increasing trend over time.The investigation into crack evolution in both the spatial and Fourier domains contributes significantly to elucidating the mechanical behavior of UHPC.

外文关键词：

dynamic mode decompositionultra-high performance concretecrack detectiongeometric featuresFourier domain

作者：

Jixing CAO、Yao ZHANG、Haijie HE、Weibing PENG、Weigang ZHAO、Zhiguo YAN、Hehua ZHU

展开 >

作者单位：

School of Safety Engineering and Emergency Management,Shijiazhuang Tiedao University,Shijiazhuang 050043,China

College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China

College of Civil and Architectural Engineering,Taizhou University,Taizhou 318000,China

College of Civil Engineering and Architecture,Zhejiang University of Technology,Hangzhou 310014,China

Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China

展开 >

基金：

2022 Open Project of Failure Mechanics and Engineering Disaster Prevention,Key Laboratory of Sichuan ProvinceNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaYouth Top Talent Program,Education Department of Hebei ProvinceNatural Science Foundation of Hebei ProvinceScientific Research Foundation for the Returned Overseas Scholars,Hebei ProvinceInnovation Research Group Program of Natural Science,Hebei Province

项目编号：

FMEDP2022045210837951908504BJK2022047E2021210002C20210307E2021210099

出版年：

2024

DOI：

10.1007/s11709-024-1042-x

结构与土木工程前沿

高等教育出版社

结构与土木工程前沿

CSTPCDEI

影响因子：0.082

ISSN：2095-2430

年,卷(期)：2024.(3)