Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Fatigue and Fracture of non metallic materials Vol. 20, No. 75 (2026)

Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials

Author and affiliation details
  • Ragip Ince Corresponding author Firat University, Faculty of Engineering, Department of Civil Engineering, Elazig, Turkey ORCID iD0000-0002-9837-8284 rince@firat.edu.tr
  • Erkin Eren Firat University, Faculty of Engineering, Department of Civil Engineering, Elazig, Turkey ORCID iD0000-0001-5282-398X
DOI
10.3221/IGF-ESIS.75.30
Pages
435-462
Published
Licence
CC BY 4.0
Published inVol. 20, No. 75 (2026)Go to the issue

Abstract

The compliance method was first applied to short rod specimens to determine the nonlinear fracture toughness of rock materials by ISRM (International Society for Rock Mechanics) in the 1980s. In this study, utilizing the techniques of the J-integral and the crack closure integral (CCI), crucial linear elastic fracture mechanics expressions for straight-notched disk bending (SNDB) specimens, whose tests are simpler than those for short bar specimens, and single-notch cube bending (SNCB) specimens are initially derived to estimate crack propagation states in rock samples. Andesite-based SNDB specimens from the literature are examined using the compliance approach, and a strong correlation is observed between the compliance approach and the nonlinear approach reported in the literature. Subsequently, limestone-based SNCB specimens and beams containing cracks are produced and tested under bending. The fracture test data are estimated using the peak load approach, and the results of the comparative analysis are found to be satisfactorily consistent for both beams and SNCB specimens. The findings of this study reveal that the non-Hookean fracture quantities of rocks can be adequately determined using SNDB and SNCB specimens of a single size.

Keywords

Article history

  1. ReceivedUntil the next stage: 68 days
  2. RevisedUntil the next stage: 0 days
  3. AcceptedUntil the next stage: 0 days
  4. Published

How to cite

APA

Ince, R., & Eren, E. (2025). Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials. Fracture and Structural Integrity, 20(75), 435–462. https://doi.org/10.3221/IGF-ESIS.75.30

IEEE

R. Ince and E. Eren, “Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials,” Fracture and Structural Integrity, vol. 20, no. 75, pp. 435–462, 2025, doi: 10.3221/IGF-ESIS.75.30.

MLA

Ince, Ragip, and Erkin Eren. “Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials.” Fracture and Structural Integrity, vol. 20, no. 75, 2025, pp. 435–462. https://doi.org/10.3221/IGF-ESIS.75.30.

Chicago

Ince, Ragip, and Erkin Eren. 2025. “Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials.” Fracture and Structural Integrity 20 (75): 435–462. https://doi.org/10.3221/IGF-ESIS.75.30.

Harvard

Ince, R. and Eren, E. (2025) ‘Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials’, Fracture and Structural Integrity, 20(75), pp. 435–462. doi: 10.3221/IGF-ESIS.75.30.

Vancouver

Ince R, Eren E. Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials. Fracture and Structural Integrity. 2025;20(75):435-462. doi:10.3221/IGF-ESIS.75.30

BibTeX

@article{ince2025, author = {Ince, Ragip and Eren, Erkin}, title = {Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials}, journal = {Fracture and Structural Integrity}, year = {2025}, volume = {20}, number = {75}, pages = {435--462}, doi = {10.3221/IGF-ESIS.75.30}, url = {https://doi.org/10.3221/IGF-ESIS.75.30}, issn = {1971-8993} }

RIS

TY - JOUR AU - Ince, Ragip AU - Eren, Erkin TI - Utilizing cylindrical and cubical specimens with edge notch to determine size-independent fracture quantities of rock materials JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2025 DA - 2025/12/11 VL - 20 IS - 75 SP - 435 EP - 462 DO - 10.3221/IGF-ESIS.75.30 UR - https://doi.org/10.3221/IGF-ESIS.75.30 SN - 1971-8993 ER -

Licence

Creative Commons Attribution 4.0 International

May be shared and adapted, provided appropriate credit is given. Copyright © 2025 Ragip Ince, Erkin Eren.

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