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Comparison of Stress Fields in a Single-Edge Crack Specimen from Phase-Field Model and Photoelasticity

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Advancement of Optical Methods and Fracture and Fatigue, Volume 3 (SEM 2023)

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Abstract

Phase-field models (PFM) are regularized versions of the variational approach applied to fracture problems. Albeit, different numerical methods are available which can be used to solve fracture problems; the robustness of the PFM for fracture lies in their capability to handle cracks or discontinuity. Many researchers have already explored the ability of the PFMs to capture the crack initiation and propagation. In this study, as part of the validation, the crack propagation in the PFM for brittle fracture is compared with experiments for a single-edge crack specimen made of epoxy material. The isochromatic fringes generated by post-processing stress data from the PFM are compared with the experimental isochromatics to identify modelling parameters. A preliminary study of PFM with the aid of photoelasticity shows that the length scale parameter (lo) has a significant role in modelling.

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Authors and Affiliations

  1. Department of Applied Mechanics, Indian Institute of Technology, Madras, Chennai, Tamil Nadu, India

    C. Anand & K. Ramesh

  2. Department of Mechanical Engineering, Indian Institute of Technology, Madras, Chennai, Tamil Nadu, India

    Sundararajan Natarajan

Authors
  1. C. Anand
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  2. Sundararajan Natarajan
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  3. K. Ramesh
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Corresponding author

Correspondence to C. Anand .

Editor information

Editors and Affiliations

  1. Worcester Polytechnic Institute, Worcester, MA, USA

    Cosme Furlong

  2. National Applied Research Laboratories, Taiwan Instrument Technology Institute, Hsinchu, Taiwan

    Chi-Hung Hwang

  3. National Institute of Standards and Technology, Gaithersburg, MD, USA

    Gordon Shaw

  4. Utah State University, Logan, UT, USA

    Ryan Berke

  5. Engg, 245 Fluor Daniel Building, Clemson Univ, Dept Mechanical, Clemson, SC, USA

    Garrett Pataky

  6. Mechanical Science and Eng, University of IL Urbana-Champaign, Urbana, IL, USA

    Shelby Hutchens

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Anand, C., Natarajan, S., Ramesh, K. (2024). Comparison of Stress Fields in a Single-Edge Crack Specimen from Phase-Field Model and Photoelasticity. In: Furlong, C., Hwang, CH., Shaw, G., Berke, R., Pataky, G., Hutchens, S. (eds) Advancement of Optical Methods and Fracture and Fatigue, Volume 3. SEM 2023. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50499-0_17

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