Evaluation of Microencapsulated Penetrant Inspection.
Abstract
Presented are the results of a program to evaluate the merits and short-comings of microencapsulated penetrants for use in fluorescent penetrant inspection to evaluate capsule and spray parameters to effectively use microencapsulated penetrants, and to compare the sensitivity of such a system to a conventional MIL-I-25135 Group VI liquid fluorescent penetrant inspection system. The program was divided into four phases which encompassed selection of materials for encapsulation, evaluation of capsule and spray variables, investigation of removal and developer techniques, measurement of sensitivity, and a process demonstration including environmental and economic analysis. The work culminated with the successful demonstration that microencapsulated penetrants could be applied in such a way to achieve equivalent sensitivity with a MIL-I-25135 Group VI liquid penetrant system. The microencapsulated penetrant system as now developed uses only nonaqueous wet developers which are much more costly than dry or aqueous wet developers. Therefore, the per-part cost of using microencapsulated penetrants is considerably higher than for liquid penetrants where dry or aqueous wet developers are used. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1980
- Accession Number
- ADA096826
Entities
People
- J. M. Portaz
Organizations
- General Electric