Presenter Information

Jon L. Opsal, Therma-Wave, Inc.

Location

Williamsburg, VA

Start Date

1-1-1986 12:00 AM

Description

In recent years there has been a significant amount of work on developing thermal wave systems to nondestructively detect and image features in materials [1-4]. The ultimate goal is, of course, to have a system that is also quantitative, providing information about the shape, extent and composition of the features. In order to accomplish this goal it is first necessary to develop an understanding of how thermal waves interact with features, that is, how thermal waves are scattered. Some work has been done, for example, the Born approximation has been applied to scattering from isolated cracks [5], but as with all scattering problems one really needs to treat the problem in some fashion that can, at least numerically, be shown to be exact. In this talk, we describe a numerical method for thermal wave scattering and demonstrate its convergence properties for some simple scatterers.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

5A

Chapter

Chapter 1: Conventional Methodologies

Section

Other

Pages

295-301

DOI

10.1007/978-1-4615-7763-8_30

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Thermal Wave Scattering

Williamsburg, VA

In recent years there has been a significant amount of work on developing thermal wave systems to nondestructively detect and image features in materials [1-4]. The ultimate goal is, of course, to have a system that is also quantitative, providing information about the shape, extent and composition of the features. In order to accomplish this goal it is first necessary to develop an understanding of how thermal waves interact with features, that is, how thermal waves are scattered. Some work has been done, for example, the Born approximation has been applied to scattering from isolated cracks [5], but as with all scattering problems one really needs to treat the problem in some fashion that can, at least numerically, be shown to be exact. In this talk, we describe a numerical method for thermal wave scattering and demonstrate its convergence properties for some simple scatterers.