skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: On single-edge-crack tension specimens for tension-compression fatigue crack growth testing

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1419393
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Engineering Fracture Mechanics
Additional Journal Information:
Journal Volume: 176; Journal Issue: C; Related Information: CHORUS Timestamp: 2018-02-02 14:30:48; Journal ID: ISSN 0013-7944
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Saxena, Ashok, Bassi, Federico, Nibur, Kevin, and Newman, Jr, James C. On single-edge-crack tension specimens for tension-compression fatigue crack growth testing. United Kingdom: N. p., 2017. Web. doi:10.1016/j.engfracmech.2017.03.030.
Saxena, Ashok, Bassi, Federico, Nibur, Kevin, & Newman, Jr, James C. On single-edge-crack tension specimens for tension-compression fatigue crack growth testing. United Kingdom. doi:10.1016/j.engfracmech.2017.03.030.
Saxena, Ashok, Bassi, Federico, Nibur, Kevin, and Newman, Jr, James C. Mon . "On single-edge-crack tension specimens for tension-compression fatigue crack growth testing". United Kingdom. doi:10.1016/j.engfracmech.2017.03.030.
@article{osti_1419393,
title = {On single-edge-crack tension specimens for tension-compression fatigue crack growth testing},
author = {Saxena, Ashok and Bassi, Federico and Nibur, Kevin and Newman, Jr, James C.},
abstractNote = {},
doi = {10.1016/j.engfracmech.2017.03.030},
journal = {Engineering Fracture Mechanics},
number = C,
volume = 176,
place = {United Kingdom},
year = {Mon May 01 00:00:00 EDT 2017},
month = {Mon May 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.engfracmech.2017.03.030

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

Save / Share:
  • Precracks generated in purely compressive cycles permit a determination of threshold values [Delta]K[sub th] and crack growth curves with increasing load amplitude only. They also permit to measure the effective threshold [Delta]K[sub eff th] and the dependence of [Delta]K[sub th] on crack length. The production of such precracks is also discussed.
  • In the present paper, an improved strain-energy-density criterion presented recently for the commonly used fracture criterion, the minimum strain-energy-density criterion, is extended to the case of cyclic loading to predict mixed-mode fatigue crack growth in materials with different yield strengths in tension and compression. The analysis of the mixed-mode fatigue crack growth process is very complex. For the purpose of more precisely predicting the mixed mode fatigue crack growth process, the authors developed a numerical scheme in which the improved fatigue crack growth criterion is combined with the displacement discontinuity method, a boundary element method. In the fatigue crack growthmore » analysis of an inclined crack under uniaxial cyclic loading, the stress intensity factors for each increment of the crack growth are calculated by means of the displacement discontinuity method. Fatigue growth analysis of an inclined crack under uniaxial cyclic loading in materials with different yield strengths in tension and compression is carried out.« less
  • Crack shielding stress intensities in in situ loaded compact tension specimens of two types of ceria-partially-stabilized zirconia/alumina (Ce-TZP-Al{sub 2}O{sub 3}) composites with prior histories of subcritical crack growth in sustained and tension-tension fatigue loading were directly assessed using laser Raman spectroscopy. Crack-tip stress fields within the transformation zones were measured by measuring a stress-induced frequency shift of a peak corresponding to the tetragonal phase. The peak shift as a function of the applied stress was separately calibrated using a ball-on ring flexure test. Total crack shielding stress intensity was estimated from the far-field applied stress intensity and the local crack-tipmore » stress intensity assessed from the measured near-crack-tip stresses. The shielding stress intensities were consistently lower in the fatigue specimens than in the sustained load crack growth specimens. The reduced crack shielding developed in the fatigue specimens was independently confirmed by measurements of larger crack-opening displacement under far-field applied load as compared to the sustained load crack growth specimens. Thus, diminished crack shielding was a major factor contributing to the higher subcritical crack growth rates exhibited by the Ce-TZPAl{sub 2}O{sub 3} composites in tension-tension cyclic fatigue.« less