Results 131 to 140 of about 31,598 (181)
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Inverse analysis of the wedge-splitting test
Engineering Fracture Mechanics, 2008The amount of information which it is possible to retrieve from the wedge-splitting test is investigated. Inverse analysis is undertaken based on the analytical hinge model for various multi-linear softening curves. This showed that the commonly used bi-linear softening curve can be replaced by an up to quad-linear curve, which is reflected by ...
Jan Skoček, Henrik Stang
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Wedge Splitting Test of Foam Concrete Specimens: Calibration Curves
Key Engineering Materials, 2014In the present paper, the well-known wedge splitting test is applied on specimens made from foam concrete. In the case of this material the whole test specimens cannot be made from foam concrete but the rectangular groove, needed for the load transmission pieces, has to be made of stiffer material (typically marble). K-calibration (B1) and T-stress (B2)
Stanislav Seitl +2 more
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Study on fracture characteristics of reinforced concrete wedge splitting tests
Computers and Concrete, 2016To study the influence on fracture properties of reinforced concrete wedge splitting test specimens by the addition of reinforcement, and the restriction of steel bars on crack propagation, 7 groups reinforced concrete specimens of different reinforcement position and 1 group plain concrete specimens with the same size factors were designed and ...
Shaowei HU +3 more
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Wedge Splitting Test and Fracture Energy on Particulate Reinforced Composites
Transactions of the Korean Society of Mechanical Engineers A, 2016입자강화 복합재료는 금속연료, 산화제 및 고분자 물질인 바인더를 결합하여 점탄성 특성을 나타내는 재료이며, 점화 시에는 고온 고압의 작동 환경이 조성되므로 구조재로 작용한다. 최근 이 재료는 각종 산업 분야에서 다양하게 사용되기 때문에 기계적 특성을 분석하고 평가하여 제작 과정 및 제작 환경을 개선하는데 중점을 두고 있다. 입자강화 복합재료는 사용 용도에 따라 다양한 그레인(grain)의 형상으로 제작되는데, 이러한 그레인은 Key Words: Wedge Splitting Test(쐐기분열시험), Fracture Energy(파괴 에너지), Digital Image Correlation(디지털 이미지 상관법), Crack ...
Seong Hyeon Na +5 more
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The wedge splitting test, a new method of performing stable fracture mechanics tests
Engineering Fracture Mechanics, 1990Abstract The wedge splitting test is a new test method to perform stable fracture mechanics tests on concrete and concrete-like materials. Specific fracture energy G F as well as fracture toughness K Ic are determined using simple specimens like cubes or cylinders.
E. Brühwiler, F.H. Wittmann
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NON-TRADITIONAL GEOMETRY FOR WEDGE-SPLITTING TEST
2021The wedge-splitting test is widely used in the testing of fracture mechanical parameters of concrete or concrete-like materials. This test provides a stable crack propagation, which was analysed on a cube specimen. Another interesting application for measuring fracture mechanical properties combines wedge-splitting test with a three-point bending test.
Juhászová, Tereza +2 more
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Wedge-splitting tests for tensile strength and fracture toughness of concrete
Theoretical and Applied Fracture Mechanics, 2018Abstract This study presents a new approach for determination of tensile strength ft and fracture toughness KIC of concrete using wedge-splitting (WS) specimens as neither property can be easily measured because of the heterogeneous material structures. The Boundary Effect Model (BEM) was extended to WS geometry and relevant equations were derived so
J.F. Guan +4 more
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Numerical evaluation of cohesive fracture parameters from a wedge splitting test
Engineering Fracture Mechanics, 2002Abstract Direct determination of the parameters describing the popular cohesive crack model from experimental results, such as would be obtained from standard three-point bending or wedge splitting tests, poses a challenging problem. This paper describes a numerical method for obtaining key fracture parameters describing the softening behavior of ...
N.S. Que, F. Tin-Loi
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Fatigue crack growth of high-strength concrete in wedge-splitting test
Cement and Concrete Research, 1999In this study, a wedge-splitting testing was carried out for the investigation of fatigue crack growth behavior of high strength concrete. Selected test variables were concrete compressive strength (28, 60, and 118 MPa) and stress ratio (6, 13%). In order to apply the target stress ratio, the maximum and the minimum fatigue loadings were 75–85 and 5–10%
Jin-Keun Kim, Yun-Yong Kim
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