Yazar "Kahraman, S" seçeneğine göre listele

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    A brittleness index to estimate fracture toughness
    (PERGAMON-ELSEVIER SCIENCE LTD, 2004) Kahraman, S; Altindag, R
    [Abstract Not Available]
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    A comparative evaluation of indirect methods to estimate the compressive strength of rocks
    (SPRINGER WIEN, 2005) Fener, M; Kahraman, S; Bilgil, A; Gunaydin, O
    [Abstract Not Available]
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    Correlation of TBM and drilling machine performances with rock brittleness (vol 65, pg 269, 2002)
    (Elsevier Science Bv, 2003) Kahraman, S
    [Abstract Not Available]
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    Correlations between P-wave velocity and Atterberg limits of cohesive soils
    (CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS, 2005) Fener, M; Kahraman, S; Bay, Y; Gunaydin, O
    Undisturbed and disturbed samples of cohesive soils were collected from eight different locations to investigate the possibility of estimating the Atterberg limits of cohesive soils from P-wave velocity measurements. Each soil type was classified according to the Unified Soil Classification System, and then Atterberg limits of soils were determined and P-wave velocity measurements carried out on the undisturbed samples of each soil type. P-wave velocity values were correlated with the corresponding values of Atterberg limits. It was found that liquid limit, plastic limit, and plasticity index exhibit good correlations with P-wave velocity. The relations follow a logarithmic function. Liquid limit, plastic limit, and plasticity index decrease with an increase in P-wave velocity. In addition, liquid limit, plastic limit, and plasticity index exhibit very good correlations with the ratio of P-wave velocity to water content. Liquid limit, plastic limit, and plasticity index decrease logarithmically with an increase in the ratio of P-wave velocity to water content. It can be concluded that the Atterberg limits of cohesive soils can be predicted from P-wave velocity measurements for preliminary investigations. The developed equations have some limitations and further study is required in this area. Undisturbed and disturbed samples of cohesive soils were collected from eight different locations to investigate the possibility of estimating the Atterberg limits of cohesive soils from P- wave velocity measurements. Each soil type was classified according to the Unified Soil Classification System, and then Atterberg limits of soils were determined and P- wave velocity measurements carried out on the undisturbed samples of each soil type. P- wave velocity values were correlated with the corresponding values of Atterberg limits. It was found that liquid limit, plastic limit, and plasticity index exhibit good correlations with P- wave velocity. The relations follow a logarithmic function. Liquid limit, plastic limit, and plasticity index decrease with an increase in P- wave velocity. In addition, liquid limit, plastic limit, and plasticity index exhibit very good correlations with the ratio of P- wave velocity to water content. Liquid limit, plastic limit, and plasticity index decrease logarithmically with an increase in the ratio of P- wave velocity to water content. It can be concluded that the Atterberg limits of cohesive soils can be predicted from P- wave velocity measurements for preliminary investigations. The developed equations have some limitations and further study is required in this area.
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    The effects of fracture roughness on P-wave velocity
    (Elsevier Science Bv, 2002) Kahraman, S
    Artificial fractures were created on three different rock samples by sawing. The fracture surfaces were in turn grooved in different directions by sawing to simulate the fracture roughness. Four different roughness types were created and a fracture roughness coefficient (FRC) was defined for each type. Model experiments were carried out on the rock samples having different fracture roughness to investigate how the sound velocity varies with fracture roughness. The test results were statistically analysed using the method of least squares regression and polynomial relationships with high correlation coefficient were found between the FRC values and the P-wave velocities. The P-wave velocity decreases with increasing the FRC values. (C) 2002 Elsevier Science B.V. All rights reserved.