Magnetic Field Interactions with Material Discontinuities.
Abstract
Electromagnetic methods of nondestructive testing are used widely throughout industry for detecting defects in metal parts. A major stumbling block in the development of these techniques, particularly with regard to the study of automated defect characterization schemes, has been the lack of a suitable model capable of predicting the inherent complex field/defect interactions. The major purpose of the project work described in this final report has been to determine the feasibility of applying finite element analysis techniques to the modeling of a) active leakage field, b) residual leakage field, and c) eddy current methods of non-destructively testing metal structures. Feasibility has been demonstrated over the past three years and stands as a major accomplishment of the project work to-date. In addition the use of numerical analysis techniques clearly shows the close interrelationship of all the electromagnetic NDT phenomena and the need for accurate material property (conductivity and permeability) values. An extensive bibliography is given in the appendix. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 15, 1970
- Accession Number
- ADA084541
Entities
People
- William Lord
Organizations
- Colorado State University