An Introduction to Measurements using Strain Gages

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1、47108_HBM-Buch-Hoffmann200619.12.20068:20UhrSeite1KarlHoffmannAnIntroductiontoMeasurementsusingStrainGagesAnIntroductiontoMeasurementsusingStrainGagesPublisher:KarlHoffmannHottingerBaldwinMesstechnikGmbH,DarmstadtKarlHoffmannAnIntroductiontoMeasurementsusingStrainGagesKarlHof

2、fmannAnIntroductiontoMeasurementsusingStrainGagesWith172figuresandtablesPublisher:HottingerBaldwinMesstechnikGmbH,DarmstadtAllrightsreserved.©HottingerBaldwinMesstechnikGmbH,1989Thereproductionanddistributionofthispublicationeitherinfullorinpart,includingbothtextandillustrati

3、ons,inanyformwhatsoeverisonlypermittedwithexpressedwrittenpermissionfromthepublisher.PrintedbyDruckereiDrach,Alsbach,FederalRepublicofGermanyForewordForewordbytheauthorDuringaperiodofmorethan30yearsofworkinginthefieldofstraingages,Ihavefoundthatapracticalintroductionintothiss

4、pecialsectorofmeasurementtechnologyislacking,particularlyforthosejustenteringthefield.SomeofthebrochuresthatIhavewrittenovertheyearsprovideanswerstocontinuallyrecurringquestionsanddealwithspecialtopics.ThefeedbackIhavereceivedhasledmeintopresentingthepracticalaspectsofstraing

5、agemeasurementinacomprehensiveform.Theoreticalaspectsareconsideredwheretheyarenecessaryinordertounderstandtherelationshipsinvolved.Straingagemeasurementtechniquestouchupontwospecialistareas:mechanicalengi-neering,inparticularthelawsofmechanicalstability,andelectricalengineeri

6、ng,includingelectronics.Problemscanoccurwhenspecialistsinoneofthefieldsbecomeinvolvedintheother.Inadditionitisapparentfrompracticalexperienceandinformationgainedatseminarsthatnotonlyengineersbutalsotechniciansaregiventhetaskofconductingstraingagemeasurements.Thisfacthasbeenta

7、kenintoconsiderationinthebook,sincetherela-tionshipspresentedmustalsobecapableofbeingunderstoodbyanonspecialist.Whereapplicable,examplesaregivenforclarification.Alimitonthesizeofthebookimpliesanunavoidablerestrictiononthematerial.Sofromthenumerouselectronicequipmentinuse,only

8、themostimportantisdiscussedandonlytoanextentnecessaryfortheunderstan