Infrared electro-thermal NDE of stainless steel

Conference · Fri Jul 18 04:00:00 EDT 1975

OSTI ID:4069275

Green, D. R.; Hassberger, J. A.

Electro-thermal examination, a branch of thermal testing, is a promising method being developed for nondestructive examination of stainless steel welds. This paper describes the first phase of development; i.e., preliminary demonstration and laboratory evaluation of the method's sensitivity to notches in Type 304 stainless steel plate specimens. It also includes a description of the basic principles, together with a description of the hardware and experimental results showing that electrical discharge machined notches down to 0.16 cm long x 0.08 cm deep were detected. A qualitative technique for interpreting the test results to determine whether defects are at the surface or deeper within the material is demonstrated. (auth)

• Research Organization: Hanford Engineering Development Lab., Richland, Wash. (USA)
• DOE Contract Number: E(45-1)-2170
• NSA Number: NSA-33-023242
• OSTI ID: 4069275
• Report Number(s): HEDL-SA--1004A; CONF-751016--5
• Country of Publication: United States
• Language: English

Related Subjects

*STAINLESS STEELS-- NONDESTRUCTIVE TESTING
*WELDED JOINTS-- NONDESTRUCTIVE TESTING
420500* --Engineering--Materials Testing
ELECTRIC CURRENTS
HEATING
N42400* --Engineering--Materials Testing
NOTCHES
SENSITIVITY
STAINLESS STEEL-304