Interaction of ultrasonic waves with partially-closed cracks in concrete structures
作者: Lotfollah PahlavanFengqiao ZhangGerrit BlacquièreYuguang YangDick Hordijk
作者单位: 1Department of Structural Reliability, TNO, Delft, The Netherlands
2Department Structural Engineering, Delft University of Technology, Delft, The Netherlands
3Department of Acoustics and Sonar, TNO, The Hauge, The Netherlands
刊名: Construction and Building Materials, 2018, Vol.167 , pp.899-906
来源数据库: Elsevier Journal
DOI: 10.1016/j.conbuildmat.2018.02.098
关键词: Ultrasonic elastic wavesConcrete beamCrackAnisotropy
原始语种摘要: Abstract(#br)Interaction of ultrasonic waves with partially-closed surface-breaking cracks in concrete structures has been studied. Measurements have been conducted on a reinforced concrete beam containing various mechanical-load-induced cracks and compared with the baseline measurements at those locations. Influence of crack width, incident angle of waves with cracks, and distance from the cracks on travel time and amplitude of the waves have been investigated when the beam was unloaded. It has been observed that a measurable part of the waves propagate through the cracks due to the acoustic coupling between the crack faces, although attenuation can be relatively high. The travel time has shown a nearly independent behavior from remaining crack opening in the measured range of 0.05 mm to...
全文获取路径: Elsevier  (合作)
影响因子:2.293 (2012)