Presenter Information

Jim Couchman, General Dynamics

Location

Thousand Oaks, CA

Start Date

1975 12:00 AM

Description

I would like to discuss some of the problems and successes related to using computerized signal processing to characterize internal flaws in materials. The work reported on will be limited to the flawed specimens provided by Rockwell International which ·consist of flat bottom holes and spheroidal voids.

In this presentation I will first discuss the signal processing system that was prepared to perform this study and will identify some of the measurements that can be rather routinely made with the system. Al so, I will describe our attempts to obtain rf and frequency spectral signatures of the various flaws that we have analyzed, and finally, I will discuss a data format that is more convenient for comparison with theoretical calculations.

Book Title

Proceedings of the ARPA/AFML Review of Quantitative NDE

Chapter

4. Ultrasonic Scattering 2

Pages

169-194

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Digital Measurements of Scattering from Spheroids and Flat Bottom Holes

Thousand Oaks, CA

I would like to discuss some of the problems and successes related to using computerized signal processing to characterize internal flaws in materials. The work reported on will be limited to the flawed specimens provided by Rockwell International which ·consist of flat bottom holes and spheroidal voids.

In this presentation I will first discuss the signal processing system that was prepared to perform this study and will identify some of the measurements that can be rather routinely made with the system. Al so, I will describe our attempts to obtain rf and frequency spectral signatures of the various flaws that we have analyzed, and finally, I will discuss a data format that is more convenient for comparison with theoretical calculations.