ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 6

Calibration of the Side-Grooved Modified Wedge-Opening-Load Specimen

LeFort, P
Materials engineer and managermember of ASTM, Materials and Processes Laboratory, General Electric Co., Schenectady, N.Y.

Mowbray, DF
Materials engineer and managermember of ASTM, Materials and Processes Laboratory, General Electric Co., Schenectady, N.Y.

Abstract

The modified wedge-opening-load (WOL) specimen introduced by Novak and Rolfe is now commonly employed to establish crack growth rate and threshold of stress corrosion cracking K_Iscc data. The present paper is concerned with the stress intensity factor solution for this specimen with 10% side grooving. Finite element and experimental compliance studies were undertaken to define the stress intensity factor solution in terms of crack mouth opening displacement. The analytical and experimental results obtained were found to be in excellent agreement. The results also verify the use of Wilson's finite element stress intensity calibration of the T-type WOL specimen when the effect of the side grooves is accounted for.

Keywords:
crack propagation, static tests, calibrating, WOL specimens, stress intensity factor

Paper ID: JTE10929J
DOI: 10.1520/JTE10929J
ASTM International is a member of CrossRef.