建筑物破损状况的红外热像法定量检测研究

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1、浙江工业大学硕士学位论文建筑物破损状况的红外热像法定量检测研究姓名：李文炳申请学位级别：硕士专业：固体力学指导教师：蔡增伸;冯平20050418浙江了业大学硕士学位论文建筑物破损状况的红外热像法定量检测研究过实际的建筑物外墙工程检测，证实应用红外检测不但切实可行，而且可以快速、非接触、大面积扫描检查建筑饰面质量，检测到的图像可以直观反映破损状况，比单纯的锤击法省时省力，数据又可长期保存。本文应用有限元软件对两种空鼓深度的情况进行了数值模拟计算，计算得出的温度场与实验测得的温度场基本一致。本文最后对所做的工作进行了总结，提出一些以

2、后需要改进和完善的地方，并展望红外热像法应用于建筑物破损检测技术的不断完善和发展。关键词：建筑物饰面，红外热像法，无损检测，数字图像处理，MATLAB，ANSYSiI浙江下业大学硬士学位论文建筑物破损状况的红钋热像法定量检测研需STUDYONQUANTITATIVEDETECTIONOFBUILDINGDEFECTBYINFRAREDTHERMoGRApHYABSTRACTOuterwalldefectofbuilding，suchasdesquamationoffacingandextendingcrack，ononehand

3、，willcauseaccident；ontheotherhand，indicatesexistinginnerhiddentrouble．Ifnotimelydetectionisconducted，extremelysevereaccidentwillpossiblyhappens．ThusdetectingandevaluatingthedamageofthebuildingoDtersurfaceareofsignificance．Infraredthermographyevaluatesthedisrepairstat

4、usfromtemperaturefieldofthebuildingfacewhichisheatedbysunshine．Thismethodasoneofthemodemopticsmeasurementmethodshassuchfeaturesasfull—field，non—contact，hi曲resolutionandhi曲sensitivityUntilnOWonlyqualitativedetectionwasconductedbythismethodThusthisdissertationaimsatthe

5、quantitativedetectionofbuildingdefectbyinfi：aredthermography,andapplyingitinpracticeInthispaper,thedevelopmenthistoryofinfrarednondestructivetestandtherelatedresearchstatusOilbuildingdetectionareintrod_ucedfirst．Then，theexperimentalmodelofquantitativedetectionofbuild

6、ingdefectbyinfraredthermographyissetupforthefirsttime．Intheexperiment，Ill浙江工业犬学碗士学位论文建筑物破损状I旯的组外热像法定量检测研究buildingouter-wallissimulatedbyreinforcedconcrete(RC)beamandemptyswellbypolystyrenefoam．Theobtainedinfraredimagesofthemareanalyzedtocalculatetheareaoftheemp砂swell

7、bydigitalimageprocessingtechnique．Theexperimentalresultisconsistentwiththeresultobtainedbyroutineways．Bytheexperiment，therelationsbetweenthedepthoftheemptyswellandthesurfacetemperaturecartbefound，andtheoptimaltimeforouter-walldetectioncarlbeevaluated．Onthespotdetecti

8、onofbuildingouter-walldefectconfirmsthatnotonlyinfraredthermographyisapplicabletobutalsoitisagoodmethodwithmanyadvantagessuchashigh