微小形变量的几种测量方法讨论

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、,、。,。、———[1]205-208(),,。1。,,。Δt,ΔL,θ,h,θ,:tanθ=ΔLh(1)t1,,d1。t2,d2,Δd=d2-d1。D,h。2:tan2θ=ΔdD(2)θ,:tan2θ=2tanθ(3),:ΔdD=2ΔLh(4)12(),、,。,。、,,。()[2],。[2],。:3,,;,20093JOURNALOFNANNINGTEACHERSCOLLEGE26(66):2009-04-16:(1974-),,,,、。(,532420):、,。,,。,、。:;;;:O436:A:1008-696X(2009)03-0123-031.;2.;3.;4.;5.;6.;7.8;9.;10.3123··,。,,,,,。,,,,,。()[3](4),,,,。,。,;。,,,,[4]。()[5],。5。,,。,,,,ΔL。。,,。,,,。,、。()[6],。:、、、。。(U)。,UB。,,(6),。,,,。ΔL,,,U。KΔU,ΔL。()[7~8],。,。7(a)。(),,,。,,。,,,1.;2.;3.;4.;5.;6..45-TV6124··,,,7(b),。λ,、,。(a)(b)7KS,D,ΔL(5):ΔL=DKλ2S(5),D,K,λ,SK。,,,。、、,;,,,。,,;,,;,,,,;,,,,,,、、。,,,,。:[1].(、)[M].:,2000.[2],,.[J].,2006(8).[3].[J].,2005(2).[4],,.[J].,2005(42).[5],,.-TV[J].,2006(4).[6],.[M].:,2003.[7],.[J].,2004(2).[8],,.[J].,2007(3).(::)MeasurementofMicroDeformationLIFan-sheng(DepartmentofPhysicsandIT,GuangxiNormalUniversityforNationalities,Longzhou,Guangxi532400,China)Abstract:ThemeasurementofmicrodeformationisthekeyinYounModulusandlinearexpansioncoefficientexperiments.Giv-enthedifficultyandaccuracyoftraditionalopticallevermagnify,newmeasurementsshouldbeexploredaccordingtotheexperimentprinciple,featureandscope.Keywords:microdeformation;YounModulus;linearexpansioncoefficient;measurement125··

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