Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Study on the Measurement of Flexural Strain Using the Digital Image Correlation in the Three-Point Bending Test

이미지 상관법을 이용한 휨 변형률 측정에 관한 연구

  • Choi, In Young (Department of Mechanical Design, Graduate School of Chonbuk National University) ;
  • Kang, Young June (Department of Mechanical Design Engineering, Chonbuk National University) ;
  • Hong, Kyung Min (Department of Mechanical Design, Graduate School of Chonbuk National University) ;
  • Ko, Kwang Su (Department of Mechanical Design, Graduate School of Chonbuk National University) ;
  • Lee, Hak Sung (Department of Mechanical Design, Graduate School of Chonbuk National University)
  • Received : 2014.03.26
  • Accepted : 2014.08.22
  • Published : 2014.10.15
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Abstract

Displacements and strains are very important for material evaluation as critical factors to a machine's life cycle and safety. Typically, the strain gauge has been employed to measure displacement and strain. However, this contact-type measurement method has disadvantages that are not quantified under the test conditions of a specific object shape, surface roughness, and temperature. In this paper, the measurement of deflection and flexural strain due to the three-point bending test is presented, employing Digital Image Correlation (DIC) methods. In order to ensure measurement reliability, DIC and universal test machine methods were compared by measuring the deflections and flexural strains developed by such bending tests.

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References

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