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An Enhanced Method to Evaluate Tensile Yield Stress by Small Punch Tests Using Deflection Curves

Betül Gülçimen Çakan, Peter Hähner

2020Englishsmall punch testyield stressdeflectiondisplacementfinite element methodmechanical properties

Abstract

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While force–displacement curves are often preferred in Small Punch (SP) tests due to the ease of the experimental set-up, they encompass significant uncertainties arising from frame compliance. In this work, a methodology is presented to predict yield stresses from the force vs. deflection curves. The present method relies on determining different force levels from the initial part of the force–deflection curve to reflect both the slope and the curvature instead of using a single force level only. The predicted yield stresses for different types of materials, that is, low- and high-strength alloys, are found to be in good agreement with the actual proof stresses with a maximum error of 16%.

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Cite This Work

@article{8fc9b21f-0851-4216-a87f-2e76718dcaf4,
  title={An Enhanced Method to Evaluate Tensile Yield Stress by Small Punch Tests Using Deflection Curves},
  author={Betül Gülçimen Çakan and Peter Hähner},
  year={2020},
  language={English}
}
TY  - JOUR
TI  - An Enhanced Method to Evaluate Tensile Yield Stress by Small Punch Tests Using Deflection Curves
AU  - Betül Gülçimen Çakan
AU  - Peter Hähner
PY  - 2020
LA  - English
ER  -

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