摘要
Developmentandtestingofaseriallymultiplexedfiberopticsensorsystemisdescribed.Thesensordiffersfromconventionalfiberopticacousticsystems,asitiscapableofsensingAEemissionsatseveralpointsalongthelengthofasinglefiber.Multiplexingprovidesforsinglechanneldetectionofcracksandtheirlocationsinlargestructuralsystems.AnalgorithmwasdevelopedforsignalrecognitionandtaggingoftheAEwaveformsfordetectionofcracklocations.Laboratoryexperimentsonplainconcretebeamsandpost-tensionedFRPtendonswereperformedtoevaluatethecrackdetectioncapabilityofthesensorsystem.Theacousticemissionsensorwasabletodetectinitiation,growthandlocationofthecracksinconcreteaswellasintheFRPtendons.TheAEsystemispotentiallysuitableforapplicationsinvolvinghealthmonitoringofstructuresfollowinganearthquake.
出版日期
2003年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
