ISSN1006－7167CN31－1707/TＲESEAＲCHANDEXPLOＲATIONINLABOＲATOＲY第41卷第12期Vol．41No．122022年12月Dec．2022DOI:10．19927/j．cnki．syyt．2022．12．041电子散斑干涉技术在实验力学教学中的应用徐香新(东北大学理学院，沈阳110819)摘要:为了满足新工科背景下的教学需求，革新传统光弹性实验，在实验力学教学中增设了电子散斑面内变形测量实验项目。介绍了电子散斑技术的基本原理以及相应的实验设备，并以悬臂梁试件为例详细阐述了整个实验的操作流程。通过统计全班的实验平均相对误差，分析了由于载荷选取等因素造成误差产生的原因。实践表明，电子散斑面内变形测量实验项目实验自由度高、实验软件操作简单、实验结果直观、准确，在实验力学中不再拘泥于传统的光弹性实验，既完善了光测实验教学体系，又取得了良好的实验教学效果。关键词:电子散斑干涉;实验力学;光测实验;实验教学中图分类号:G642.0文献标志码:A文章编号:1006－7167(2022)12－0214－05ApplicationofESPIinExperimentalMechanicsTeachingXUXiangxin(CollegeofSciences，NortheasternUniversity，Shenyang110819，China)Abstract:Inordertomeettherequirementsofteachingunderthebackgroundof“newengineering”andinnovatethetraditionalphotoelasticexperiment，theprojectof“InSurfaceDeformationMeasurementExperimentofESPI”isaddedintheteachingofexperimentalmechanics．Thebasicprincipleofelectronicspeckletechniqueandthecorrespondingexperimentalequipmentareintroduced，andtheoperationprocessofthewholeexperimentisdescribedindetailwithacantileverbeamasanexample．Bycountingtheaveragerelativeerrorofthewholeclass＇sexperiment，theerrorscausedbyfactorssuchasloadselectionareanalyzed．Thepracticeshowsthattheprojectof“InsurfacedeformationmeasurementexperimentofESPI”hashighdegreeoffreedom，simpleoperationofexperimentalsoftware，intuitiveandaccurateexperimentalresults．Itisnolongerconfinedtothetraditionalphotoelasticexperimentinexperimentalmechanics，bywhichnotonlytheteachingsystemofopticalmeasurementexperimentisimproved，butalsoexperimentalteachingisexcellent．Keywords:electronicspecklepatterninterferometry(ESPI);experimentalmechanics;opticalmeasurementexperiment;experimentalteaching收稿日期:20...
