Published April 9, 2005 | Version v1
Journal article Metadata-only

Studies into the Effects of Surface Roughness on Spatial Eddy-Current Data from Nickel-Based Engine Alloys

Creators

  • 1. Center for NDE, Iowa State University, Ames, IA 50011-3042 (United States)
  • 2. Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011-3042 (United States)
  • 3. Department of Aerospace Engineering, Iowa State University, Ames, IA 50011-3042 (United States)
  • 4. Department of Mechanical Engineering, Iowa State University, Ames, IA 50011-3042 (United States)

Description

Eddy-current scans have been carried out on two Inconel-718 specimens following the application of various levels of shot peening and heat treatments. The conventional analysis of roughened or shot peened surfaces looks at multi-frequency impedance measurements and interprets the data as a change in conductivity or liftoff. An approach involving the statistical analysis of scanned eddy-current impedance data is suggested as an alternative that may provide a more sensitive way of determining the treatment history of a component. It is possible that an analysis of these statistical distributions in spatial eddy-current data could be used to determine the level of remaining residual stress in engine components

Additional details

Identifiers

DOI
10.1063/1.1916707;

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
760
Journal Issue
1
Journal Page Range
p. 425-431
ISSN
0094-243X
CODEN
APCPCS

Conference

Title
Conference on review of progress in quantitative nondestructive evaluation
Dates
25-30 Jul 2004
Place
Golden, CO (United States)

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36094985
Subject category
S42: ENGINEERING; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
EDDY CURRENT TESTING; EDDY CURRENTS; ELECTRIC IMPEDANCE; HEAT TREATMENTS; INCONEL 718; RESIDUAL STRESSES; ROUGHNESS; SHOT PEENING
Descriptors DEC
ALLOY-NI53CR19FE19NB5MO3; ALLOYS; ALUMINIUM ADDITIONS; ALUMINIUM ALLOYS; CHROMIUM ALLOYS; COLD WORKING; CORROSION RESISTANT ALLOYS; CURRENTS; ELECTRIC CURRENTS; ELECTROMAGNETIC TESTING; FABRICATION; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; IMPEDANCE; INCONEL ALLOYS; IRON ALLOYS; MATERIALS; MATERIALS TESTING; MATERIALS WORKING; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NICKEL BASE ALLOYS; NIOBIUM ALLOYS; NONDESTRUCTIVE TESTING; STRESSES; SURFACE PROPERTIES; SURFACE TREATMENTS; TESTING; TITANIUM ADDITIONS; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
(c) 2005 American Institute of Physics