%0 Conference Paper %1 1999SPIE.3671..297L %A Lin, M. W. %A Abatan, A. O. %A Zhang, W.-M. %B Proc. SPIE Vol. 3671, p. 297-304, Smart Structures and Materials 1999: Smart Systems for Bridges, Structures, and Highways, Steve C. Liu; Ed. %D 1999 %E Liu, S. C. %K Crack ETDR cable civil coaxial concrete crack damage detection electrical_time_domain_reflectometry longwall sensor strain stress structures %P 297-304 %T Crack damage detection of concrete structures using distributed electrical time domain reflectometry (ETDR) sensors %V 3671 %X Electrical time domain reflectometry (ETDR) stress/strain sensing technique has been successfully used in geotechnical applications to detect rock deformation and longwall movement. Since durable sensor media that can survive harsh construction environment and has long service life can be used, the ETDR sensing method appears to be a practical technique for health monitoring applications of civil concrete structures. In this paper, the applicability of using an embedded coaxial ETDR cable to sense structural deformation and detect load-induced crack damages of a concrete structure is investigated. Bending test were performed on small-scale concrete specimens with embedded coaxial ETDR sensors. The test results show that the deformation patterns of the concrete specimens are clearly represented and the location and magnitude of load-induced crack damages that pass the sensing line are evidently shown in the ETDR signal response of the sensor. The results of the current study demonstrate the great potentials of the ETDR technique for the health monitoring application of large civil concrete structures.

@inproceedings{1999SPIE.3671..297L, abstract = {Electrical time domain reflectometry (ETDR) stress/strain sensing technique has been successfully used in geotechnical applications to detect rock deformation and longwall movement. Since durable sensor media that can survive harsh construction environment and has long service life can be used, the ETDR sensing method appears to be a practical technique for health monitoring applications of civil concrete structures. In this paper, the applicability of using an embedded coaxial ETDR cable to sense structural deformation and detect load-induced crack damages of a concrete structure is investigated. Bending test were performed on small-scale concrete specimens with embedded coaxial ETDR sensors. The test results show that the deformation patterns of the concrete specimens are clearly represented and the location and magnitude of load-induced crack damages that pass the sensing line are evidently shown in the ETDR signal response of the sensor. The results of the current study demonstrate the great potentials of the ETDR technique for the health monitoring application of large civil concrete structures.}, added-at = {2008-05-17T00:50:44.000+0200}, adsnote = {Provided by the SAO/NASA Astrophysics Data System}, adsurl = {http://adsabs.harvard.edu/abs/1999SPIE.3671..297L}, author = {{Lin}, M. W. and {Abatan}, A. O. and {Zhang}, W.-M.}, biburl = {https://www.bibsonomy.org/bibtex/2206311ad3f0a58f26061eb7915045d99/thulefoth}, booktitle = {Proc. SPIE Vol. 3671, p. 297-304, Smart Structures and Materials 1999: Smart Systems for Bridges, Structures, and Highways, Steve C. Liu; Ed.}, description = {Crack damage detection of concrete structures using distributed electrical time}, editor = {{Liu}, S. C.}, interhash = {90c79ab6b35edb96e3fee094503a1fcc}, intrahash = {206311ad3f0a58f26061eb7915045d99}, keywords = {Crack ETDR cable civil coaxial concrete crack damage detection electrical_time_domain_reflectometry longwall sensor strain stress structures}, month = May, pages = {297-304}, series = {Presented at the Society of Photo-Optical Instrumentation Engineers (SPIE) Conference}, timestamp = {2008-05-17T00:50:45.000+0200}, title = {{Crack damage detection of concrete structures using distributed electrical time domain reflectometry (ETDR) sensors}}, volume = 3671, year = 1999 }