Determination of residual strain fields on rail wheels using moire interferometry

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:5646415

Epstein, J S; Deason, V A; Reuter, W G

Moire interferometry was used to determine the residual strain fields in a rail wheel. Hoop, radial, and shear displacement fields were determined in a whole field manner using a novel four-beam moire interferometer. Diffraction gratings of 150 lines/mm were employed on the specimen surface. A system of data interpolation utilizing a simple control sample scheme was developed for field environments where sample loading occurs away from the optical device. Agreement was found between the moire technique and physical measurements of wheel contraction during sectioning. Marginal agreement was found with strain gage measurements. 5 refs., 10 figs.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5646415
• Report Number(s): EGG-M-06487; CONF-8708213-1; ON: DE88005547
• Resource Relation: Conference: SPIE international conference on photomechanics, San Diego, CA, USA, 21 Aug 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
STRAINS
INTERFEROMETRY
DIFFRACTION
GRATINGS
STRAIN GAGES
COHERENT SCATTERING
MEASURING INSTRUMENTS
SCATTERING
420500* - Engineering- Materials Testing