Location

La Jolla ,CA

Start Date

1-1-1989 12:00 AM

Description

The ideal ultrasonic test should define unambiguously the size and location of defects, require a minimum of signal processing (i.e., operator intuition and decision) and use a minimum number of transducers. To do this it is necessary to choose the appropriate transducers and transducer locations; unfortunately this may require a time consuming series of iterative pre-test s using samples with manufactured defects which are presumed to behave similarly to real defects. The question arises as to whether numerical simulations may not provide a faster and more efficient way to design these tests. Accordingly a series of numerical tests were designed to: a) demonstrate the validity of numerical simulation; b) define the range of problems which can be treated numerically; c) describe the protocol for determining the optimal transducer position; d) determine the type of signal processing which would provide the maximum information.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

8A

Chapter

Chapter 3: Interpretive Signal and Image Processing

Section

Utilization of Numerical Methods

Pages

811-818

DOI

10.1007/978-1-4613-0817-1_101

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

The Use of Finite Element Methodology in Designing Ultrasonic Tests and the Detection of Weak Bond Planes

La Jolla ,CA

The ideal ultrasonic test should define unambiguously the size and location of defects, require a minimum of signal processing (i.e., operator intuition and decision) and use a minimum number of transducers. To do this it is necessary to choose the appropriate transducers and transducer locations; unfortunately this may require a time consuming series of iterative pre-test s using samples with manufactured defects which are presumed to behave similarly to real defects. The question arises as to whether numerical simulations may not provide a faster and more efficient way to design these tests. Accordingly a series of numerical tests were designed to: a) demonstrate the validity of numerical simulation; b) define the range of problems which can be treated numerically; c) describe the protocol for determining the optimal transducer position; d) determine the type of signal processing which would provide the maximum information.