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Fracture, Fatigue, Failure and Damage Evolution, Volume 8 pp 45–50Cite as

Development of a Specimen for In-Situ Diffraction Planar Biaxial Experiments

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Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

In this paper, the design of cruciform shaped, planar biaxial loading specimens using finite element analysis, mechanical testing, and digital image correlation is discussed. The specimens were designed to be capable of arbitrary combinations of tension and compression loading. Digital image correlation results from uniaxial tension tests of first-generation specimen infer key design attributes of second-generation specimen. Finite element results are compared with a plane stress analytical formulation and differences between the two are attributed to stress concentration fields originating at the intersection of specimen arms. These results motivate a parametric finite element geometry optimization of second-generation specimen.

Keywords

  • SEM
  • DIC
  • FEA
  • Planar biaxial
  • Compression

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Abbreviations

E :

Young’s modulus

ε 11 :

Strain in the 11 direction

ε 22 :

Strain in the 22 direction

λ a :

Ratio of 11–22 direction applied surface tractions

λ ga :

Analytical formulation ratio of 11–22 direction gage stresses

λ gs :

FEA simulation ratio of 11–22 direction gage stresses

ν :

Poisson’s ratio

σ 11 :

Stress in the 11 direction

σ 11a :

Applied surface traction in the 11 direction

σ 11ga :

Analytical formulation gage stress in the 11 direction

σ 11gs :

FEA simulation gage stress in the 11 direction

σ 22 :

Stress in the 22 direction

σ 22a :

Applied surface traction in the 22 direction

σ 22ga :

Analytical formulation gage stress in the 22 direction

σ 22gs :

FEA simulation gage stress in the 22 direction

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Author information

Authors and Affiliations

  1. Mechanical Engineering Department, Colorado School of Mines, Brown Hall W350, 1610 Illinois Street, Golden, CO, 80401, USA

    G. M. Hommer & A. P. Stebner

Authors
  1. G. M. Hommer
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  2. A. P. Stebner
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Correspondence to G. M. Hommer .

Editor information

Editors and Affiliations

  1. Materials Engineering department, Pennsylvania State University, Pennsylvania, Pennsylvania, USA

    Allison M. Beese

  2. Cornell University, Ithaca, New York, USA

    Alan T. Zehnder

  3. Georgia Institute of Technology, Atlanta, Georgia, USA

    Shuman Xia

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Hommer, G.M., Stebner, A.P. (2016). Development of a Specimen for In-Situ Diffraction Planar Biaxial Experiments. In: Beese, A., Zehnder, A., Xia, S. (eds) Fracture, Fatigue, Failure and Damage Evolution, Volume 8. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-21611-9_6

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  • DOI: https://doi.org/10.1007/978-3-319-21611-9_6

  • Publisher Name: Springer, Cham

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