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Transducers for Sonic Fatigue Measurements

Report Number: AFFDL TR 64-171
Author(s): Ronald D. Kelly
Corporate Author: Measurement Analysis Corporation
Laboratory: Air Force Flight Dynamics Laboratory
Date of Publication: 1965-02
Pages: 120
Contract: AF 33(615)-1314
Project: 4437
Task: 443706
AD Number: AD0613946

The report discusses the machine errors of transducer systems used for the measurement of dynamic input and response data during sonic fatigue testing. The specific types of transducers covered are accelerometers, microphones, and strain gages. The basic operating principles, intrinsic inaccuracies, environmentally related inaccuracies, and usage inaccuracies are described. These inaccuracies are broken down into errors occurring in the transducer, cabling, and signal conditioner, as well as those due to system operation. In addition, methods for minimizing these errors are given.

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