Improvements in Ultrasonic Measurement Modeling with Applications to Ultrasonic Reliability Gray, Timothy Thompson, R. Bruce Newberry, B. 2018-02-14T06:30:18.000 2020-06-30T06:30:25Z 2020-06-30T06:30:25Z Tue Jan 01 00:00:00 UTC 1985 1985
dc.description.abstract <p>Over the past several years, work has been reported on the development and implementation of a measurement model relating measured ultrasonic signals obtained through planar or cylindrically curved interfaces to far field scattering amplitudes (1). A number of applications have also been described, including obtaining scattering amplitudes (2) to improve sizing capability via the inverse Born approximation (3), predicting detected signals from cracks in planar (4) and cylindrical (5) geometries, and establishing detection filters (6) for improved inspectability. These applications have used models of diffraction effects for the case of piston source radiation (7) which were developed to account only for the axial pressure fields. A number of desired applications such as treating large flaws and scanning modes will require the ability to model the full radiation field of a probe. As a first step, a model of the radiation of Gaussian profile probes through planar or curved surfaces has been developed (8). With suitable normalization, this model can be used to predict the far-field behavior of piston probes. This allows modeling of full field behavior near the focal region of either focussed probes or focussing part surfaces. This paper will discuss the incorporation of the Gaussian beam theory into the measurement model. Also reported will be several new applications of the measurement model to problems associated with ultrasonic reliability.</p>
dc.format.mimetype Application/pdf
dc.identifier archive/
dc.identifier.articleid 2821
dc.identifier.contextkey 5800491
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/1985/allcontent/2
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 22:03:04 UTC 2022
dc.source.uri 10.1007/978-1-4615-9421-5_2
dc.subject.keywords Ames Laboratory
dc.title Improvements in Ultrasonic Measurement Modeling with Applications to Ultrasonic Reliability
dc.type event
dc.type.genre article
dspace.entity.type Publication
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