Yazar "Fener M." seçeneğine göre listele

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    Performance prediction of circular diamond saws from mechanical rock properties in cutting carbonate rocks
    (2007) Fener M.; Kahraman S.; Ozder M.O.
    Possibility of estimating the sawability of carbonate rocks from some mechanical rock property was evaluated using simple and multiple regression analysis. Hourly Production of circular saws was firstly correlated with rock properties and then, multiple regression analysis was performed. Rock blocks were collected from the factories for laboratory tests, and attempt was made to collect rock samples that were large enough to obtain all of the test specimens of a given rock type from the same piece. Linear, logarithmic, exponential and power curve fitting approximations with the highest correlation coefficient was determined for each regression. Results showed that sawability of carbonate rocks can reliably be predicted from compressive strength, tensile strength using simple regression equations.
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    Predicting the sawability of carbonate rocks using multiple curvilinear regression analysis
    (2004) Kahraman S.; Fener M.; Gunaydin O.
    Performance measurements of large-diameter circular saws were conducted on 13 different carbonate rocks in marble factories located in Turkey. Rock samples were collected from the factories for laboratory tests. Cohesion, friction angle, uniaxial compressive strength, tensile strength, Schmidt hammer value, point load strength, impact strength, Los Angeles abrasion loss and P-wave velocity values were determined in the laboratory. Slab production and rock properties were evaluated using multiple curvilinear regression analysis and estimation models were developed. Advancing rate of saw, saw diameter, depth of cut, tensile strength and impact strength were included for the best model. Alternative and more universal models were developed, including each rock property in turn together with the rotational speed of the saw. The developed models were verified by statistical tests.It was concluded that the slab production of carbonate rocks using large-diameter circular saws can reliably be estimated using one of the developed models. The models which include Schmidt hammer value, point load strength, impact strength and P -wave velocity have practical and economical advantages for the stone industry. © 2004 Elsevier Ltd. All rights reserved.
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    Predicting the Schmidt hammer values of in-situ intact rock from core sample values
    (2002) Kahraman S.; Fener M.; Gunaydin O.
    [No abstract available]
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    Predicting the UCS of pyroclastic rocks from the slake durability index
    (2010) Kahraman S.; Fener M.; Gunaydin O.
    The prediction of the uniaxial compressive strength (UCS) from indirect methods is widely used for the preliminary investigations. In this study, the possibility of predicting the UCS from the slake durability index (SDI) was investigated for pyroclastic rocks. For this purpose, pyroclastic rocks were collected from 32 different locations in Cappadocian Volcanic Province of Turkey. The UCS and the SDI tests were carried out on the samples in the laboratory. The dry and saturated UCS values were correlated with the SDI values and strong exponential relations were obtained. However, it was seen that there is a little change in the SDI values over the dry UCS values of 25 MPa and the saturated UCS values of 15 MPa. Concluding remark is that the developed equations are valid for the pyroclastic rocks having dry UCS values of lower than 25 MPa or having saturated UCS values of lower than 15 MPa. © 2010 Taylor & Francis Group, London.
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    Sawability prediction of carbonate rocks from brittleness indexes
    (2004) Gunaydin O.; Kahraman S.; Fener M.
    Performance measurements of large-diameter circular saws were conducted on eight different carbonate rocks in marble factories located in some areas of Turkey. Rock samples were collected from these factories for laboratory tests. Uniaxial compressive strength, tensile strength and impact strength were determined in the laboratory. The brittleness of B3 (the ratio of compressive strength minus tensile strength to compressive strength plus tensile strength), the brittleness of B5 (the product of percentage fines in the impact strength test and compressive strength) and the brittleness of B8 (half of the product of compressive strength and tensile strength) were calculated from the test results. Hourly slab productions were correlated with brittleness indexes. It was concluded that sawability of carbonate rocks can best be predicted from the brittleness of B8.
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    Sawability prediction of carbonate rocks from shear strength parameters using artificial neural networks
    (2006) Kahraman S.; Altun H.; Tezekici B.S.; Fener M.
    [No abstract available]
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    The effect of water saturation on the strength of marbles
    (International Society for Rock Mechanics, 2008) Kahraman S.; Gunaydin O.; Fener M.
    Uniaxial compressive strength (UCS), Brazilian tensile strength (BTS) and point load strength (Is) of rocks are commonly used for the rock engineering applications. These important rock properties are strongly influenced by the water saturation. In this study, to investigate the effects of water saturation on the strengths of marbles, the UCS, BTS and Is tests were carried out on eight different marble types in the laboratory. The evaluation of results showed that the strength losses due to saturation ranges from 5.0 % to 25.3 % for UCS, from 5.1 % to 20.9 % for BTS, and from 5.6 % to 14.4 % for Is, respectively. The ratios between saturated and dry strength ranges from 74.7 % to 94.9 % for UCS, from 79.1 % to 94.9 % for BTS, and from 85.6 % to 94.4 % for Is, respectively. Linear regression equations between saturated and dry-rock strength values were also derived. The saturated UCS, BTS and Is of marbles can be predicted from the dry UCS, BTS and Is using the developed equations. Keywords: Marbles; Water saturation; Uniaxial compressive strength; Tensile strength; Point load strength. © ISRM International Symposium - 5th Asian Rock Mechanics Symposium 2008, ARMS 2008. All rights reserved.