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Kerim Aydiner - One of the best experts on this subject based on the ideXlab platform.

  • Determination of the wear performance of diamond saw blades using inductively coupled plasma
    Sadhana-academy Proceedings in Engineering Sciences, 2019
    Co-Authors: Serkan Inal, Ilker Erkan, Kerim Aydiner
    Abstract:

    Saw blades are one of the most used cutting tools. They compose the expensive parts of a cutting machine. Therefore, saw-blade wear is an important parameter governing the economy of the cutting process. Significant savings could be made when it is controlled effectively. In this study, a new methodology is employed for the determination of the saw-blade wear in the cutting of two types of marble. Wear of segments is determined by high-precision inductively coupled plasma method. Two types of marbles were used to investigate the wear performance of diamond-impregnated segments of circular saw-blade matrix. Taguchi mixed design L16 (43 21) is used as an experimental design and the results are evaluated statistically with Minitab. The results reveal that the specific wear rate (SWR) of Beige marble increases with the increase of the Peripheral Speed, traverse Speed, depth of cut and down-cut mode operation. Additionally, it is demonstrated that the traverse Speed and Peripheral Speed are the dominant cutting parameters affecting the SWR. It is also seen that similar trends are observed for Onyx marble (excluding Peripheral Speed). Finally, it is concluded that the proposed models can be effectively used for the estimation of the SWR.

  • Development of Predictive Models for the Specific Energy of Circular Diamond Sawblades in the Sawing of Granitic Rocks
    Rock Mechanics and Rock Engineering, 2013
    Co-Authors: Gokhan Aydin, Izzet Karakurt, Kerim Aydiner
    Abstract:

    This paper presents an experimental study on the sawing of granitic rocks by circular diamond sawblades. The influence of the operating variables and rock properties on the specific energy were initially investigated and analyzed. To determine the most significant operating variables and rock properties influencing the specific energy, statistical analyses were then employed and the models were built for the estimation of specific energy depending on the operating variables and the rock properties. Moreover, the derived models were validated through statistical tests such as the determination coefficient, t -test, F -test, and residuals. The results indicated that the specific energy decreased with the decreasing of Peripheral Speed and the increasing of traverse Speed, cutting depth, and flow rate of cooling fluid, respectively. It was concluded that, rather than the physico-mechanical properties, the mineralogical properties were the dominant rock properties affecting the specific energy. Additionally, the Peripheral Speed was statistically determined as the most significant operating variable affecting the specific energy. The Peripheral Speed was followed by the cutting depth, traverse Speed, and flow rate of cooling fluid with respect to their level of significance on the specific energy. Furthermore, the model results revealed that the developed models have high potentials as a guidance for practical applications.

  • Investigation of the surface roughness of rocks sawn by diamond sawblades
    International Journal of Rock Mechanics and Mining Sciences, 2013
    Co-Authors: Gokhan Aydin, Izzet Karakurt, Kerim Aydiner
    Abstract:

    Surface roughness (SR) is a measure of the technological quality of a product and a factor that greatly influences manufacturing costs. The current study presents an experimental study on the SR of granitic rocks sawn by the diamond sawblades. Effects of the operating variables on the SR are determined and the SR is correlated with the rock properties. Morphologies of the wearing surfaces of rocks and the roughness profiles of the measurements are also investigated. Moreover, models are developed depending on both the operating variables and the rock properties for the estimation of the SR. Results show that the SR increases with the increase of the Peripheral Speed, the traverse Speed, and the cutting depth, while it decreases with the increase of the flow rate of cooling fluid. The Peripheral Speed and the traverse Speed are determined as the significant operating variables affecting the SR. Additionally, rather than the mechanical properties of the rock, the mineralogical properties are determined as mainly responsible for the SR. Among the mineralogical properties, mean grain size of rock is ranked first in governing the SR. The chipping craters, scratching grooves and fractures on the rock surface are determined as the characteristics of the diamond sawblade cutting. Furthermore, the modeling results reveal that the developed models have high potential for the estimation of the SR.

  • Predictive modelling of noise level generated during sawing of rocks by circular diamond sawblades
    Sadhana, 2013
    Co-Authors: Izzet Karakurt, Gokhan Aydin, Kerim Aydiner
    Abstract:

    This paper presents an experimental and statistical study on noise level generated during of rock sawing by circular diamond sawblades. Influence of the operating variables and rock properties on the noise level are investigated and analysed. Statistical analyses are then employed and models are built for the prediction of noise levels depending on the operating variables and the rock properties. The derived models are validated through some statistical tests. It is found that increasing of Peripheral Speed, traverse Speed and cutting depth result in an increase in noise levels. On the other hand, a decreasing trend for noise levels is initially observed with the increasing of flow rate of cooling fluid. It is also determined that there are moderate correlations between uniaxial compressive strength, density and noise levels. Furthermore, the modelling results reveal that the predictive models have high potentials as guidance for practical applications.

  • Wear Performance of Saw Blades in Processing of Granitic Rocks and Development of Models for Wear Estimation
    Rock Mechanics and Rock Engineering, 2013
    Co-Authors: Gokhan Aydin, Izzet Karakurt, Kerim Aydiner
    Abstract:

    This study investigates the wear performance of diamond circular saw blades in cutting of granitic rocks. An alternative wear measuring method is developed to measure the reduced blade radius without taking the blade off the machine. The effect on and contribution to the specific wear rate (SWR) of each operating variable are determined, and the SWR is correlated with rock properties. Morphologies of wearing surfaces of segments and rocks are also evaluated using scanning electron microscopy (SEM). Depending on both operating variables and rock properties, prediction models are developed for estimation of the SWR. Results show that the SWR increases with an increase in the Peripheral Speed and the traverse Speed, while it decreases with an increase in the cutting depth and the flow rate of the cooling fluid. The Peripheral Speed, and the microhardness and proportions of minerals such as quartz, plagioclase, and feldspar are statistically determined as the significant variables affecting the SWR. Finally, it is disclosed that models developed for estimation of SWR have great potential for practical applications.

Gokhan Aydin - One of the best experts on this subject based on the ideXlab platform.

  • Development of Predictive Models for the Specific Energy of Circular Diamond Sawblades in the Sawing of Granitic Rocks
    Rock Mechanics and Rock Engineering, 2013
    Co-Authors: Gokhan Aydin, Izzet Karakurt, Kerim Aydiner
    Abstract:

    This paper presents an experimental study on the sawing of granitic rocks by circular diamond sawblades. The influence of the operating variables and rock properties on the specific energy were initially investigated and analyzed. To determine the most significant operating variables and rock properties influencing the specific energy, statistical analyses were then employed and the models were built for the estimation of specific energy depending on the operating variables and the rock properties. Moreover, the derived models were validated through statistical tests such as the determination coefficient, t -test, F -test, and residuals. The results indicated that the specific energy decreased with the decreasing of Peripheral Speed and the increasing of traverse Speed, cutting depth, and flow rate of cooling fluid, respectively. It was concluded that, rather than the physico-mechanical properties, the mineralogical properties were the dominant rock properties affecting the specific energy. Additionally, the Peripheral Speed was statistically determined as the most significant operating variable affecting the specific energy. The Peripheral Speed was followed by the cutting depth, traverse Speed, and flow rate of cooling fluid with respect to their level of significance on the specific energy. Furthermore, the model results revealed that the developed models have high potentials as a guidance for practical applications.

  • Investigation of the surface roughness of rocks sawn by diamond sawblades
    International Journal of Rock Mechanics and Mining Sciences, 2013
    Co-Authors: Gokhan Aydin, Izzet Karakurt, Kerim Aydiner
    Abstract:

    Surface roughness (SR) is a measure of the technological quality of a product and a factor that greatly influences manufacturing costs. The current study presents an experimental study on the SR of granitic rocks sawn by the diamond sawblades. Effects of the operating variables on the SR are determined and the SR is correlated with the rock properties. Morphologies of the wearing surfaces of rocks and the roughness profiles of the measurements are also investigated. Moreover, models are developed depending on both the operating variables and the rock properties for the estimation of the SR. Results show that the SR increases with the increase of the Peripheral Speed, the traverse Speed, and the cutting depth, while it decreases with the increase of the flow rate of cooling fluid. The Peripheral Speed and the traverse Speed are determined as the significant operating variables affecting the SR. Additionally, rather than the mechanical properties of the rock, the mineralogical properties are determined as mainly responsible for the SR. Among the mineralogical properties, mean grain size of rock is ranked first in governing the SR. The chipping craters, scratching grooves and fractures on the rock surface are determined as the characteristics of the diamond sawblade cutting. Furthermore, the modeling results reveal that the developed models have high potential for the estimation of the SR.

  • Predictive modelling of noise level generated during sawing of rocks by circular diamond sawblades
    Sadhana, 2013
    Co-Authors: Izzet Karakurt, Gokhan Aydin, Kerim Aydiner
    Abstract:

    This paper presents an experimental and statistical study on noise level generated during of rock sawing by circular diamond sawblades. Influence of the operating variables and rock properties on the noise level are investigated and analysed. Statistical analyses are then employed and models are built for the prediction of noise levels depending on the operating variables and the rock properties. The derived models are validated through some statistical tests. It is found that increasing of Peripheral Speed, traverse Speed and cutting depth result in an increase in noise levels. On the other hand, a decreasing trend for noise levels is initially observed with the increasing of flow rate of cooling fluid. It is also determined that there are moderate correlations between uniaxial compressive strength, density and noise levels. Furthermore, the modelling results reveal that the predictive models have high potentials as guidance for practical applications.

  • Wear Performance of Saw Blades in Processing of Granitic Rocks and Development of Models for Wear Estimation
    Rock Mechanics and Rock Engineering, 2013
    Co-Authors: Gokhan Aydin, Izzet Karakurt, Kerim Aydiner
    Abstract:

    This study investigates the wear performance of diamond circular saw blades in cutting of granitic rocks. An alternative wear measuring method is developed to measure the reduced blade radius without taking the blade off the machine. The effect on and contribution to the specific wear rate (SWR) of each operating variable are determined, and the SWR is correlated with rock properties. Morphologies of wearing surfaces of segments and rocks are also evaluated using scanning electron microscopy (SEM). Depending on both operating variables and rock properties, prediction models are developed for estimation of the SWR. Results show that the SWR increases with an increase in the Peripheral Speed and the traverse Speed, while it decreases with an increase in the cutting depth and the flow rate of the cooling fluid. The Peripheral Speed, and the microhardness and proportions of minerals such as quartz, plagioclase, and feldspar are statistically determined as the significant variables affecting the SWR. Finally, it is disclosed that models developed for estimation of SWR have great potential for practical applications.

  • Experimental and statistical analysis of cutting force acting on diamond sawblade in sawing of granitic rocks
    Proceedings of the Institution of Mechanical Engineers Part B: Journal of Engineering Manufacture, 2012
    Co-Authors: Izzet Karakurt, Gokhan Aydin, Kerim Aydiner
    Abstract:

    In this study, sawability analyses of granitic rocks were carried out using segmented circular diamond sawblades. In the experimentations, a computer controlled cutting machine was used and the experiments were performed with the same-direction cutting mode. Effects and contribution of each operating variable (the Peripheral Speed, workpiece traverse Speed, cutting depth and flowrate of cooling fluid) on the cutting force were determined and cutting forces were correlated with rock properties. Moreover, models were built depending on the operating variables and the rock properties (physico-mechanical and mineralogical properties) for the estimation of cutting force. The results indicated that the higher cutting forces were obtained for higher cutting depth and traverse Speed and for lower Peripheral Speed and flowrate of cooling fluid. The most significant operating variable affecting the cutting force was determined as cutting depth. It was concluded that rather than the physico-mechanical properties, mi...

Izzet Karakurt - One of the best experts on this subject based on the ideXlab platform.

  • Application of Taguchi method for cutting force optimization in rock sawing by circular diamond sawblades
    Sadhana, 2014
    Co-Authors: Izzet Karakurt
    Abstract:

    In this paper, an optimization study was carried out for the cutting force (F_c) acting on circular diamond sawblades in rock sawing. The Peripheral Speed, traverse Speed, cut depth and flow rate of cooling fluid were considered as operating variables and optimized by using Taguchi approach for the F_c. L_16(4^4) orthogonal array was chosen for the experimental trials based on the operating variables and their levels. The signal-to-noise (S/N) ratios and the analysis of variance (ANOVA) were employed to determine optimum cutting conditions and significant operating variables, respectively. The F_ c was also modelled based on the operating variables using regression analysis. The developed model was then verified using various statistical approaches. The results revealed that the operating variables of circular diamond sawblades can be precisely optimized by Taguchi approach for the F_ c in rock sawing. The cut depth and Peripheral Speed were statistically determined as the significant operating variables affecting F_ c . Furthermore, the modelling results showed that the proposed model can be effectively used for the prediction of F_ c in practical applications.

  • Specific energy optimization in sawing of rocks using Taguchi approach
    Journal of Central South University, 2014
    Co-Authors: Izzet Karakurt
    Abstract:

    This work aims at selecting optimal operating variables to obtain the minimum specific energy (SE) in sawing of rocks. A particular granite was sampled and sawn by a fully automated circular diamond sawblades. The Peripheral Speed, the traverse Speed, the cut depth and the flow rate of cooling fluid were selected as the operating variables. Taguchi approach was adopted as a statistical design of experimental technique for optimization studies. The results were evaluated based on the analysis of variance and signal-to-noise ratio (S/N ratio). Statistically significant operating variables and their percentage contribution to the process were also determined. Additionally, a statistical model was developed to demonstrate the relationship between SE and operating variables using regression analysis and the model was then verified. It was found that the optimal combination of operating variables for minimum SE is the Peripheral Speed of 25 m/s, the traverse Speed of 70 cm/min, the cut depth of 2 cm and the flow rate of cooling fluid of 100 mL/s. The cut depth and traverse Speed were statistically determined as the significant operating variables affecting the SE, respectively. Furthermore, the regression model results reveal that the predictive model has a high applicability for practical applications.

  • Development of Predictive Models for the Specific Energy of Circular Diamond Sawblades in the Sawing of Granitic Rocks
    Rock Mechanics and Rock Engineering, 2013
    Co-Authors: Gokhan Aydin, Izzet Karakurt, Kerim Aydiner
    Abstract:

    This paper presents an experimental study on the sawing of granitic rocks by circular diamond sawblades. The influence of the operating variables and rock properties on the specific energy were initially investigated and analyzed. To determine the most significant operating variables and rock properties influencing the specific energy, statistical analyses were then employed and the models were built for the estimation of specific energy depending on the operating variables and the rock properties. Moreover, the derived models were validated through statistical tests such as the determination coefficient, t -test, F -test, and residuals. The results indicated that the specific energy decreased with the decreasing of Peripheral Speed and the increasing of traverse Speed, cutting depth, and flow rate of cooling fluid, respectively. It was concluded that, rather than the physico-mechanical properties, the mineralogical properties were the dominant rock properties affecting the specific energy. Additionally, the Peripheral Speed was statistically determined as the most significant operating variable affecting the specific energy. The Peripheral Speed was followed by the cutting depth, traverse Speed, and flow rate of cooling fluid with respect to their level of significance on the specific energy. Furthermore, the model results revealed that the developed models have high potentials as a guidance for practical applications.

  • Investigation of the surface roughness of rocks sawn by diamond sawblades
    International Journal of Rock Mechanics and Mining Sciences, 2013
    Co-Authors: Gokhan Aydin, Izzet Karakurt, Kerim Aydiner
    Abstract:

    Surface roughness (SR) is a measure of the technological quality of a product and a factor that greatly influences manufacturing costs. The current study presents an experimental study on the SR of granitic rocks sawn by the diamond sawblades. Effects of the operating variables on the SR are determined and the SR is correlated with the rock properties. Morphologies of the wearing surfaces of rocks and the roughness profiles of the measurements are also investigated. Moreover, models are developed depending on both the operating variables and the rock properties for the estimation of the SR. Results show that the SR increases with the increase of the Peripheral Speed, the traverse Speed, and the cutting depth, while it decreases with the increase of the flow rate of cooling fluid. The Peripheral Speed and the traverse Speed are determined as the significant operating variables affecting the SR. Additionally, rather than the mechanical properties of the rock, the mineralogical properties are determined as mainly responsible for the SR. Among the mineralogical properties, mean grain size of rock is ranked first in governing the SR. The chipping craters, scratching grooves and fractures on the rock surface are determined as the characteristics of the diamond sawblade cutting. Furthermore, the modeling results reveal that the developed models have high potential for the estimation of the SR.

  • Predictive modelling of noise level generated during sawing of rocks by circular diamond sawblades
    Sadhana, 2013
    Co-Authors: Izzet Karakurt, Gokhan Aydin, Kerim Aydiner
    Abstract:

    This paper presents an experimental and statistical study on noise level generated during of rock sawing by circular diamond sawblades. Influence of the operating variables and rock properties on the noise level are investigated and analysed. Statistical analyses are then employed and models are built for the prediction of noise levels depending on the operating variables and the rock properties. The derived models are validated through some statistical tests. It is found that increasing of Peripheral Speed, traverse Speed and cutting depth result in an increase in noise levels. On the other hand, a decreasing trend for noise levels is initially observed with the increasing of flow rate of cooling fluid. It is also determined that there are moderate correlations between uniaxial compressive strength, density and noise levels. Furthermore, the modelling results reveal that the predictive models have high potentials as guidance for practical applications.

Liman Yang - One of the best experts on this subject based on the ideXlab platform.

  • Feed rate servo control for spindle-less veneer lathe
    2010 IEEE Conference on Robotics Automation and Mechatronics RAM 2010, 2010
    Co-Authors: Yihong Guo, Zhongwei Guo, Yunhua Li, Liman Yang
    Abstract:

    This paper deals with the issue on the feed rate servo control for the spindle-less veneer. First, the working principle, transmission process of the spindle-less veneer lathe, and the expected feed rate function are studied and analyzed; then concluded that the key of peeling control is coordinating the feed rate of the tool post with the actual Peripheral Speed of the log. We use rotary encoders to detect the actual Peripheral Speed of the log and the feed rate of the tool post, and adopt a digital controller to control the feed process of the tool post. In order to control the feed rate, we design a compound control law with the forward feed and feedback control for the sensor-less vector controller of the asynchronous motor. Analysis and the practical application illustrate that the proposed control law has excellent application value and market development prospect.

K. P. Singh - One of the best experts on this subject based on the ideXlab platform.

  • Optimization of Machine Parameters for Milling of Pigeon Pea Using RSM
    Food and Bioprocess Technology, 2011
    Co-Authors: S. Mangaraj, K. P. Singh
    Abstract:

    Optimization of machine parameters using response surface methodology (RSM) greatly overcomes the numbers of experimental trials generally undertaken for milling study of pigeon pea apart from maximizing the output of the system. The independent milling parameters for Central Institute of Agricultural Engineering dal mill viz., roller Speed, emery grit size, and feed rates were optimized for pigeon pea dehulling using RSM. The roller Peripheral Speed of 9.6 m/s, emery grit size 1 mm, and feed rate 111 kg/h were found optimal. The dal recovery and milling efficiency at optimized independent parameters were 75% and 80%, respectively.