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Contentsviii The Art of Practical and Precise Strain Based Measurement 2nd Edition © 1999
CHAPTER 1Strain-BasedMeasurementIntroduction:Applications Note 1-1: IntroductionThe Wheatstone Bridge strain-gaged sensor type is, by a large margin,the most popular transducer element in use. Unfortunately, thestrain-based sensor is also the most misapplied sensor type. By someestimates, as much as 80% of all new sensor purchases are made inthe act of replacing a prior sensor technology or type. This representsa massive waste of human effort as well as financial resources. Historically,the costs of these errors in judgement have been buriedwithin research and development budgets. The objective of this workis to show how we can work smarter, rather than harder, by gaininginsight into the simple physics of the strain-based sensor so thaterrors in physical measurement are minimized. When a measurementis made we are attempting to understand our product or process underspecific operating conditions. Based upon our measurements we perceivespecific values when the true value of a parameter may be quitedifferent. The difference between the truth and the perception is error.A ten percent error in the magnitude of peak strain experienced by acomponent in use implies two consequences; the fatigue life expect-The Art of Practical and Precise Strain Based Measurement 2nd Edition © 1999 CHAPTER 1-1
Page 1 and 2: The Art of Practical andPrecise Str
Page 3 and 4: Special Credits:Mrs. Helen Pierson,
Page 5 and 6: Table of ContentsBy James G. Pierso
Page 8 and 9: ContentsApplications Note 4-10:Lead
Page 10: ContentsCHAPTER 8Electrical Conside
Page 15 and 16: Applications Note 1-1: Introduction
Page 17 and 18: Applications Note 1-1: Introduction
Page 19 and 20: Applications Note 1-2:The Art of Ap
Page 21 and 22: Applications Note 1-31. The presenc
Page 23 and 24: Applications Note 1-3result in a pe
Page 25 and 26: Applications Note 1-4:The measureme
Page 27 and 28: Applications Note 1-4:uncertainty i
Page 29 and 30: Applications Note 1-5:All strain-ba
Page 31 and 32: Applications Note 1-6:Applications
Page 33 and 34: Applications Note 1-6:ical size of
Page 35 and 36: Applications Note 1-6:and where:j i
Page 37 and 38: Applications Note 1-6:5. millivolts
Page 39: Applications Note 1-6:.Electrodynam
Page 44 and 45: Strain-Based Measurement Introducti
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