简介：Ageonetricalmoirémethodfordisplayingdirectlyisochromaticsandisoclinicsofadiametricallypressedcirculardiskispresented.ItisdemonstratedthatbyusingtwoidenticalordifferentWulffnets(orgrids)notonlythestressfieldsofacirculardiskcanbedisplayed,buttheu-andv-displacementfieldscanalsobeproduced.

简介：Thenumericalmoirémethodwithsensitivityashighas0.03nmhasbeenpresented.Aquantitativedisplacementandstrainanalysisprogramhasbeenproposedbyusingthismethod.Itisappliedtoauedgedislocationandastackingfaultinaluminum.ThemeasuredstrainofedgedislocationiscomparedwiththeoreticalpredictiongivenbyPeierls-Nabarrodislocationmodel.Thedisplacementofstackingfaultisalsoobtained.

简介：Fabricationofmicrogratingsusingafemtosecondlaserexposuresystemisexperimentallyinvestigatedfortheelectronmoirémethod.Microholesandlinesarefirstlyetchedforparameterstudy.Gratingprofileistheoreticallyoptimizedtoformhighqualitymoirépatterns.Forademonstration,aparallelgratingisfabricatedonaspecimenofquartzglass.Theminimumlinewidthandthedistancebetweentwoadjacentlinesarebothsettobe1μm,andthefrequencyofgratingis500lines/mm.Theexperimentalresultsindicatethatthequalityofgratingsisgoodandtherelativeerrorofthegratingspitchisabout1.5%.Basedonmoirémethod,scanningelectronmicroscope(SEM)moirépatternsareobservedclearly,whichmanifeststhatgratingsfabricatedwiththefemtosecondlaserexposureissuitableformicroscaledeformationmeasurement.

简介：钻洞的方法是为测量剩余压力的最著名的方法之一。在一个标本识别未知飞机压力，一个圆形的洞首先在飞机应力下面在无限的板中被钻，然后，源于钻的洞的紧张被测量。紧张可以从在洞附近解释Moiré签名被获得。在穿过的栅栏Moiréinterferometry，水平、垂直的排水量地(u和v)能被获得到确定二块紧张地和一砍紧张地。在这篇论文，借助于Moiréinterferometry和作者开发的三个方向栅栏(栅栏插座)，三排水量回答(u，v和s)被获得获得三块紧张地。作为一个实际应用程序，钻方法的洞被采用为增强的铝和纤维测量消除紧张合成。它是一一步一步地方法；在各个走一个单身者把压成薄片或相等的深度被钻发现在钻的深度和在纤维减轻的剩余紧张之间的一些关系增强合成材料。

简介：这篇论文处理我击碎的模式在用精细的数字波纹技术的飞机压力状况下面的一张击碎的橡胶表的问题。通过自动化穗分析的四个转移stepphase方法，在Cartesiancoordinate系统的排水量地被给。由并列变换的方程，在极的坐标系统的光线、圆形的排水量分布被获得。裂缝尖端附近的排水量isolinedistributions和排水量向量分布被讨论。裂缝尖端附近的strainisoline分布也在这篇论文被分析。最后，分发近为机械域裁定裂缝尖端与部门部门方法被讨论。

简介：

简介：PhaseShiftingAndLogicalMoire(PSALM)isakindofcomputerimageprocessingmethodwhichcanbeusedinphasemeasurementandtoobtaintheshape,deformationandstraindistributionofanobject.Thispaperpresentsthestructureandworkingprocedureofa2DphasemeasurementPSALM2Dprogramanditsapplication.Whenanalyzingmoireinterferometricfringes,wecanobtain2Ddistributionofdisplacementandstrain.Whenitisusedinreflectionmoirewecanmeasuretheslopeofaspecimen.SatisfactoryvisualizationandquantitativeresultsaregivenbyPSALM2D.

简介：Thispaperpresentsamethodtomeasurethein-planedisplacementfieldsofcurvedsurfacebymoireinterferometryofpartialcoherentlight.Themethodhasthefollowingadvantages:simpleopticalsystem,norequirementonvibrationisolation,highsensitivity,largemeasuringrange,highcontrastofinterferencefringesandavailabilitytoin-situstructuraltesting.Thepresentpaperalsogivestheoreticalanalysisofthemethodandtheformulasoflightintensityanddisplacementfield,andintroducesareplicationtechniquetoformahighfrequencyreflectancegratingonthecurvedsurface.Theexperimentsachievedthemeasurementofthesurfacedisplacementfieldofacylindricalshell—thesimultaneouscircumferential,axialand45°displacementfields.Thetorsionaltestdataforsurfacedisplacementofacircularbaragreewellwiththetheoreticalresult.

简介：Thispaperpresentsafringe-carriermethodthateliminatessignambiguityoftransientmoirefringeswhichcanbeusedtoautomaticallydeterminetherelativeorders.Afringecarrierispresetinthestaticstateofthespecimenandthedynamicin-planedisplacementsarerecordedasthemodulationtothefrequencyofthecarrierfringeswhenthespecimenisloadedbyimpact.Accordingtoamodulatingcriteriondevelopedfromthemodulationdegree,thefringesofthetransientmoirepatternskeepmonotonicalinorderssothattheycanbeautomaticallyencodedingreylevelsbyadigitalimagesystem.Themoireorderspurelycausedbydynamicloadingsareevaluatedbysubtractingthegrey-valueoftheunmodulatedcarrierimagefromthatofthemodulatedcarrierimagesencodedbytheirorders.Withthesubtractedmoireordersthestraincomponentscanbeobtained,and,correspondingly,thehistogramsofdynamicdisplacementmoireimagesareshownwithordervariationbyimage-difference.

简介：Inthispaper,anovelinterferometricmethodwithawiderangeofsensitivities,calledholographyquasiprojectionmoire,isproposed.Itcombinesthefeaturesofthevariateddoubleprojectionmoiremethodandtheholographicinterfer-ometrymethod.Thistechniqueisusedtostudythefailuremodesofmicroelectronicpackagingmodules.

简介：Nickel-irontypecastironelectrodesarewidelyusedforweldingQT600-3nodulariron.Nevertheless,theresearchworkhasdemonstratedthatthestrengthoftheseheterogeneousweldedjointsislow.Inthispaper,theuni-axialtensionofthejointsisstudiedbytheMoirefringemethod,andthedis-placement,strainandstressinthetotalfieldsareobtaind.Basedontheunevendistributionofstrainandstress,thereasonofcrackinitiationandpropagationisdiscussed.Throughexaminingtheappearanceofthefracturebyscanningelec-tronmicroscope,alotofsphericalsubstancesdistributedonthefracturesurfacearefound,whichmaybeanotherreasonleadingtocrackingoftheweldedjointunderthelowertensilestress.Thesenewfindingswillhelptoimprovethepropertiesofnickel-irontypecastironelectrodesandthestrengthoftheweldedjoint.

简介：<正>Ⅰ.AVANTPROPOSL’étudesurA.Malraux(1901-1976)etsesoeuvresest,pourlesChinoisd’autantplusimportantequesavielittéraireestaumoinsengrandepartieliéeàlaChine.Dèssonadolescence,ilporte