A <i>K</i><sup>1</sup> Calibration for a Modified Single Edge Notched Tension Specimen

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Volume 18, Issue 5 (September 1990)

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ISSN: 0090-3973
Page Count: 8

A K¹ Calibration for a Modified Single Edge Notched Tension Specimen
Kirk, MT
Fatigue and Fracture Branch, David Taylor Research Center, MD

Sanford, RJ
University of Maryland, MD

(Received 20 September 1989; accepted 16 February 1990)

Abstract

Using global and boundary collocation techniques, a single edge notched tension (SE(T)) specimen, modified by introduction of a semi-circular cutout in front of the crack, was developed and characterized. This specimen was found to produce fixed-grip K¹ values two times greater than is possible with a conventional SE(T) specimen of the same size. This new specimen could be used to investigate upper transition crack arrest phenomena with smaller specimens and testing machine capacities than have been possible previously.

Keywords:
photoelasticity, stress intensity factor, crack arrest, collocation techniques

Paper ID: JTE12497J
DOI: 10.1520/JTE12497J
ASTM International is a member of CrossRef.

Author Title A K¹ Calibration for a Modified Single Edge Notched Tension Specimen Symposium , 0000-00-00 Committee D30

		Home Journals STPs Manuals Topics Subscriptions/Pricing Digital Library / Journals / Journal of Testing and Evaluation (JTE) / Citation Page Volume 18, Issue 5 (September 1990) Click here to download this paper now for $25 PDF (240K) View License Agreement ISSN: 0090-3973 Page Count: 8 A K¹ Calibration for a Modified Single Edge Notched Tension Specimen Kirk, MT Fatigue and Fracture Branch, David Taylor Research Center, MD Sanford, RJ University of Maryland, MD (Received 20 September 1989; accepted 16 February 1990) Abstract Using global and boundary collocation techniques, a single edge notched tension (SE(T)) specimen, modified by introduction of a semi-circular cutout in front of the crack, was developed and characterized. This specimen was found to produce fixed-grip K¹ values two times greater than is possible with a conventional SE(T) specimen of the same size. This new specimen could be used to investigate upper transition crack arrest phenomena with smaller specimens and testing machine capacities than have been possible previously. Keywords: photoelasticity, stress intensity factor, crack arrest, collocation techniques Paper ID: JTE12497J DOI: 10.1520/JTE12497J ASTM International is a member of CrossRef. Author Title A K¹ Calibration for a Modified Single Edge Notched Tension Specimen Symposium , 0000-00-00 Committee D30