Mapping residual stresses after foreign object damage using the contour method

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Description

A 51-mm thick plate of High-Strength Low-Alloy (HSLA-100) steel was impacted by a 6.4 mm diameter tungsten carbide sphere traveling at 2.2 km/sec. The projectile penetration left a 10 mm diameter and 12 mm deep crater. A residual stress map over a cross-section through the crater was measured by the contour method. The predominant feature of the stress map was a peak compressive stress of 900 MPa, or 1.3 times the yield strength, centered about 1.5 crater radii below the crater floor. The results were compared with an explicit finite element simulation of the impact event. The model has good ... continued below

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7 p.

Creation Information

Prime, M. B. (Michael B.) & Martineau, R. L. (Rick L.) January 1, 2002.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 47 times , with 11 in the last month . More information about this article can be viewed below.

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Description

A 51-mm thick plate of High-Strength Low-Alloy (HSLA-100) steel was impacted by a 6.4 mm diameter tungsten carbide sphere traveling at 2.2 km/sec. The projectile penetration left a 10 mm diameter and 12 mm deep crater. A residual stress map over a cross-section through the crater was measured by the contour method. The predominant feature of the stress map was a peak compressive stress of 900 MPa, or 1.3 times the yield strength, centered about 1.5 crater radii below the crater floor. The results were compared with an explicit finite element simulation of the impact event. The model has good agreement with the measured residual stresses. As part of the study, residual stresses in the as-received HSLA-100 plate were also measured and found to be a typical quenching stress distribution with peak compressive stress of about 165 MPa a few mm below the surface and tensile stress of 200 MPa in the center of the plate thickness.

Physical Description

7 p.

Source

  • Submitted to: 6th European Conference on Residual Stresses, July 10-13, 2002, Coimbra, Portugal, Proceedings to be published in Materials Science Forum

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  • Report No.: LA-UR-02-0556
  • Report No.: LA-UR-02-556
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975997
  • Archival Resource Key: ark:/67531/metadc933194

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 2002

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 12:23 p.m.

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Prime, M. B. (Michael B.) & Martineau, R. L. (Rick L.). Mapping residual stresses after foreign object damage using the contour method, article, January 1, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc933194/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.