Characterization of damage evolution in an AM60 magnesium alloy by computed tomography

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Lawrence Livermore National Lab and Sandia National Laboratories, CA are collaborating on the development of new techniques to study damage evolution and growth in material specimens subjected to mechanical loading. These techniques include metallography, radiography, computed tomography (CT) and modeling. The material specimens being studied include cast magnesium and aluminum alloys, and forged stainless steel. The authors concentrate on characterizing monotonically loaded Mg alloy specimens using CT. Several notched tensile specimens were uniaxially loaded to different percentages of the failure load. Specimens were initially characterized by radiography and computed tomography to determine the preloaded state. Subsequent CT scans were performed ... continued below

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8 pages

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Waters, A.; Green, R.E.; Martz, H.; Dolan, K.; Horstemeyer, M. & Derrill, R. June 16, 1999.

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Description

Lawrence Livermore National Lab and Sandia National Laboratories, CA are collaborating on the development of new techniques to study damage evolution and growth in material specimens subjected to mechanical loading. These techniques include metallography, radiography, computed tomography (CT) and modeling. The material specimens being studied include cast magnesium and aluminum alloys, and forged stainless steel. The authors concentrate on characterizing monotonically loaded Mg alloy specimens using CT. Several notched tensile specimens were uniaxially loaded to different percentages of the failure load. Specimens were initially characterized by radiography and computed tomography to determine the preloaded state. Subsequent CT scans were performed after the samples were loaded to different percentages of the load failure. The CT volumetric data are being used to measure void size, distribution and orientation in all three dimensions nondestructively to determine the effect of void growth on the mechanical behavior of the materials.

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8 pages

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  • Ninth Annual Symposium on Nondestructive Characterization of Materials, Sydney (AU), 06/28/1999--07/02/1999

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  • Report No.: UCRL-JC--132804
  • Report No.: YN0100000
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 750363
  • Archival Resource Key: ark:/67531/metadc712447

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  • June 16, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • March 29, 2016, 4:11 p.m.

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Waters, A.; Green, R.E.; Martz, H.; Dolan, K.; Horstemeyer, M. & Derrill, R. Characterization of damage evolution in an AM60 magnesium alloy by computed tomography, article, June 16, 1999; California. (digital.library.unt.edu/ark:/67531/metadc712447/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.