Geomechanics and Engineering

  • 제12권6호
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  • Pages.883-898
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  • 2017
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Dog bone shaped specimen testing method to evaluate tensile strength of rock materials

  • Komurlu, Eren (Department of Mining Engineering, Karadeniz Technical University) ;
  • Kesimal, Ayhan (Department of Mining Engineering, Karadeniz Technical University) ;
  • Demir, Aysegul Durmus (Department of Civil Engineering, Karadeniz Technical University)
  • 투고 : 2016.08.30
  • 심사 : 2017.01.16
  • 발행 : 2017.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

To eliminate the holding and gluing problems making the direct tensile strength test hard to be applied, a new method of testing specimens prepared using lathe machine to make the dog bone shape is assessed whether it could be applied to determine accurate direct tensile strength values of rock materials. A series of numerical modelling analyses was performed using finite element method to investigate the effect of different specimen and steel holder geometries. In addition to numerical modelling study, a series of direct tensile strength tests was performed on three different groups of rock materials and a rock-like cemented material to compare the results with those obtained from the finite element analyses. A proper physical property of the lathed specimens was suggested and ideal failure of the dog bone shaped specimens was determined according to the results obtained from this study.

키워드

참고문헌

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피인용 문헌

  1. Effect of Sample Dimension on Three and Four Points Bending Tests of Fine Crystalline Marble and its Relationship with Direct Tensile Strength vol.221, pp.None, 2017, https://doi.org/10.1088/1755-1315/221/1/012093
  2. A New Flattened Cylinder Specimen for Direct Tensile Test of Rock vol.21, pp.12, 2021, https://doi.org/10.3390/s21124157