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This content will become publicly available on March 15, 2018

Title: Validating a Model for Welding Induced Residual Stress Using High-Energy X-ray Diffraction

Integrated computational materials engineering (ICME) provides a pathway to advance performance in structures through the use of physically-based models to better understand how manufacturing processes influence product performance. As one particular challenge, consider that residual stresses induced in fabrication are pervasive and directly impact the life of structures. For ICME to be an effective strategy, it is essential that predictive capability be developed in conjunction with critical experiments. In the present paper, simulation results from a multi-physics model for gas metal arc welding are evaluated through x-ray diffraction using synchrotron radiation. A test component was designed with intent to develop significant gradients in residual stress, be representative of real-world engineering application, yet remain tractable for finely spaced strain measurements with positioning equipment available at synchrotron facilities. Finally, the experimental validation lends confidence to model predictions, facilitating the explicit consideration of residual stress distribution in prediction of fatigue life.
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [4] ;  [4] ;  [5] ;  [6]
  1. Caterpillar Inc., Peoria, IL (United States)
  2. Cornell Univ., Ithaca, NY (United States). Sibley School of Mechanical and Aerospace Engineering
  3. Cornell High Energy Synchrotron Source, Ithaca, NY (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source
  5. Cornell High Energy Synchrotron Source, Ithaca, NY (United States). Insitu@CHESS; Univ. of Illinois, Urbana, IL (United States)
  6. Cornell Univ., Ithaca, NY (United States). Sibley School of Mechanical and Aerospace Engineering; Cornell High Energy Synchrotron Source, Ithaca, NY (United States). Insitu@CHESS
Publication Date:
Grant/Contract Number:
AC02-06CH11357; N000141410785; DMR-1332208
Type:
Accepted Manuscript
Journal Name:
JOM. Journal of the Minerals, Metals & Materials Society
Additional Journal Information:
Journal Volume: 69; Journal Issue: 5; Journal ID: ISSN 1047-4838
Publisher:
Springer
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States); Cornell High Energy Synchrotron Source, Ithaca, NY (United States); Cornell Univ., Ithaca, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Office of Naval Research (ONR) (United States); National Science Foundation (NSF); National Inst. of Health (NIH) (United States)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1368562