The Experts below are selected from a list of 12 Experts worldwide ranked by ideXlab platform
Domínguez Fernandez Alejandro - One of the best experts on this subject based on the ideXlab platform.
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Effect of grain size and density of abrasive on surface roughness, material Removal Rate and acoustic emission signal in rough honing processes
'MDPI AG', 2019Co-Authors: Buj Corral Irene, Álvarez Flórez, Jesús Andrés, Domínguez Fernandez AlejandroAbstract:Honing processes provide a special cross-hatch pattern to the internal surface of cylinders that favors oil flow. However, along honing operation the abrasive grains wear out and lose their ability to cut material. The honing chips mixed with oil fill the pores of the abrasives and they start cutting in an incorrect way, leading to clogging. In the present paper, honing experiments were carried out according to a 32 factorial design, with different grain size and density of abrasive grains. Roughness, material Removal Rate, and tool wear were determined. Acoustic emissions were also measured and the chirplet concept was applied in order to detect differences between correct and incorrect cutting operations. As a general trend roughness and material Removal Rate Increase with grain size and with density of abrasive. However, when clogging occurs roughness and material Removal Rate decrease, because the abrasive grains tend to deform the material instead of cutting it. When the honing process is working appropriately, the chirplet diagram of the harmonic part of the signal shows constant marks. On the contrary, when it does not work properly, marks disappear with time and their frequencies decrease. The results of the present paper will allow monitoring the honing process in order to change the abrasives when they are not working properly.Peer Reviewe
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Effect of grain size and density of abrasive on surface roughness, material Removal Rate and acoustic emission signal in rough honing processes
'MDPI AG', 2019Co-Authors: Buj Corral Irene, Álvarez Flórez, Jesús Andrés, Domínguez Fernandez AlejandroAbstract:Honing processes provide a special cross-hatch pattern to the internal surface of cylinders that favors oil flow. However, along honing operation the abrasive grains wear out and lose their ability to cut material. The honing chips mixed with oil fill the pores of the abrasives and they start cutting in an incorrect way, leading to clogging. In the present paper, honing experiments were carried out according to a 32 factorial design, with different grain size and density of abrasive grains. Roughness, material Removal Rate, and tool wear were determined. Acoustic emissions were also measured and the chirplet concept was applied in order to detect differences between correct and incorrect cutting operations. As a general trend roughness and material Removal Rate Increase with grain size and with density of abrasive. However, when clogging occurs roughness and material Removal Rate decrease, because the abrasive grains tend to deform the material instead of cutting it. When the honing process is working appropriately, the chirplet diagram of the harmonic part of the signal shows constant marks. On the contrary, when it does not work properly, marks disappear with time and their frequencies decrease. The results of the present paper will allow monitoring the honing process in order to change the abrasives when they are not working properly.Peer ReviewedPostprint (published version
Buj Corral Irene - One of the best experts on this subject based on the ideXlab platform.
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Effect of grain size and density of abrasive on surface roughness, material Removal Rate and acoustic emission signal in rough honing processes
'MDPI AG', 2019Co-Authors: Buj Corral Irene, Álvarez Flórez, Jesús Andrés, Domínguez Fernandez AlejandroAbstract:Honing processes provide a special cross-hatch pattern to the internal surface of cylinders that favors oil flow. However, along honing operation the abrasive grains wear out and lose their ability to cut material. The honing chips mixed with oil fill the pores of the abrasives and they start cutting in an incorrect way, leading to clogging. In the present paper, honing experiments were carried out according to a 32 factorial design, with different grain size and density of abrasive grains. Roughness, material Removal Rate, and tool wear were determined. Acoustic emissions were also measured and the chirplet concept was applied in order to detect differences between correct and incorrect cutting operations. As a general trend roughness and material Removal Rate Increase with grain size and with density of abrasive. However, when clogging occurs roughness and material Removal Rate decrease, because the abrasive grains tend to deform the material instead of cutting it. When the honing process is working appropriately, the chirplet diagram of the harmonic part of the signal shows constant marks. On the contrary, when it does not work properly, marks disappear with time and their frequencies decrease. The results of the present paper will allow monitoring the honing process in order to change the abrasives when they are not working properly.Peer Reviewe
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Effect of grain size and density of abrasive on surface roughness, material Removal Rate and acoustic emission signal in rough honing processes
'MDPI AG', 2019Co-Authors: Buj Corral Irene, Álvarez Flórez, Jesús Andrés, Domínguez Fernandez AlejandroAbstract:Honing processes provide a special cross-hatch pattern to the internal surface of cylinders that favors oil flow. However, along honing operation the abrasive grains wear out and lose their ability to cut material. The honing chips mixed with oil fill the pores of the abrasives and they start cutting in an incorrect way, leading to clogging. In the present paper, honing experiments were carried out according to a 32 factorial design, with different grain size and density of abrasive grains. Roughness, material Removal Rate, and tool wear were determined. Acoustic emissions were also measured and the chirplet concept was applied in order to detect differences between correct and incorrect cutting operations. As a general trend roughness and material Removal Rate Increase with grain size and with density of abrasive. However, when clogging occurs roughness and material Removal Rate decrease, because the abrasive grains tend to deform the material instead of cutting it. When the honing process is working appropriately, the chirplet diagram of the harmonic part of the signal shows constant marks. On the contrary, when it does not work properly, marks disappear with time and their frequencies decrease. The results of the present paper will allow monitoring the honing process in order to change the abrasives when they are not working properly.Peer ReviewedPostprint (published version
Álvarez Flórez, Jesús Andrés - One of the best experts on this subject based on the ideXlab platform.
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Effect of grain size and density of abrasive on surface roughness, material Removal Rate and acoustic emission signal in rough honing processes
'MDPI AG', 2019Co-Authors: Buj Corral Irene, Álvarez Flórez, Jesús Andrés, Domínguez Fernandez AlejandroAbstract:Honing processes provide a special cross-hatch pattern to the internal surface of cylinders that favors oil flow. However, along honing operation the abrasive grains wear out and lose their ability to cut material. The honing chips mixed with oil fill the pores of the abrasives and they start cutting in an incorrect way, leading to clogging. In the present paper, honing experiments were carried out according to a 32 factorial design, with different grain size and density of abrasive grains. Roughness, material Removal Rate, and tool wear were determined. Acoustic emissions were also measured and the chirplet concept was applied in order to detect differences between correct and incorrect cutting operations. As a general trend roughness and material Removal Rate Increase with grain size and with density of abrasive. However, when clogging occurs roughness and material Removal Rate decrease, because the abrasive grains tend to deform the material instead of cutting it. When the honing process is working appropriately, the chirplet diagram of the harmonic part of the signal shows constant marks. On the contrary, when it does not work properly, marks disappear with time and their frequencies decrease. The results of the present paper will allow monitoring the honing process in order to change the abrasives when they are not working properly.Peer Reviewe
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Effect of grain size and density of abrasive on surface roughness, material Removal Rate and acoustic emission signal in rough honing processes
'MDPI AG', 2019Co-Authors: Buj Corral Irene, Álvarez Flórez, Jesús Andrés, Domínguez Fernandez AlejandroAbstract:Honing processes provide a special cross-hatch pattern to the internal surface of cylinders that favors oil flow. However, along honing operation the abrasive grains wear out and lose their ability to cut material. The honing chips mixed with oil fill the pores of the abrasives and they start cutting in an incorrect way, leading to clogging. In the present paper, honing experiments were carried out according to a 32 factorial design, with different grain size and density of abrasive grains. Roughness, material Removal Rate, and tool wear were determined. Acoustic emissions were also measured and the chirplet concept was applied in order to detect differences between correct and incorrect cutting operations. As a general trend roughness and material Removal Rate Increase with grain size and with density of abrasive. However, when clogging occurs roughness and material Removal Rate decrease, because the abrasive grains tend to deform the material instead of cutting it. When the honing process is working appropriately, the chirplet diagram of the harmonic part of the signal shows constant marks. On the contrary, when it does not work properly, marks disappear with time and their frequencies decrease. The results of the present paper will allow monitoring the honing process in order to change the abrasives when they are not working properly.Peer ReviewedPostprint (published version
Byeonghee Kim - One of the best experts on this subject based on the ideXlab platform.
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chemical assisted ultrasonic machining of glass
Journal of Materials Processing Technology, 2007Co-Authors: Jongpil Choi, B H Jeon, Byeonghee KimAbstract:Abstract Ultrasonic machining is an efficient and economical mean for precision machining of glass or ceramic materials. However, because of its complexity, the mechanism of the material Removal process is still not well understood. Therefore, it is hard to optimize process parameters effectively. In the conventional ultrasonic machining methods, materials are removed primarily by the repeated impacts of the abrasive particles. It is time consuming and gives a relatively rough surface. In this study, in order to improve the material Removal Rate and the integrity of the machined surface, the chemical-assisted ultrasonic machining (CUSM) method is introduced. To obtain the chemical effects, a low concentration hydrofluoric acid solution is added to the alumina slurry. Through various experiments and comparison with conventional results, the superiority of our novel method is verified. Not only did the material Removal Rate Increase to 200%, but also the surface roughness was improved and the machining load decreased dramatically.
Jongpil Choi - One of the best experts on this subject based on the ideXlab platform.
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chemical assisted ultrasonic machining of glass
Journal of Materials Processing Technology, 2007Co-Authors: Jongpil Choi, B H Jeon, Byeonghee KimAbstract:Abstract Ultrasonic machining is an efficient and economical mean for precision machining of glass or ceramic materials. However, because of its complexity, the mechanism of the material Removal process is still not well understood. Therefore, it is hard to optimize process parameters effectively. In the conventional ultrasonic machining methods, materials are removed primarily by the repeated impacts of the abrasive particles. It is time consuming and gives a relatively rough surface. In this study, in order to improve the material Removal Rate and the integrity of the machined surface, the chemical-assisted ultrasonic machining (CUSM) method is introduced. To obtain the chemical effects, a low concentration hydrofluoric acid solution is added to the alumina slurry. Through various experiments and comparison with conventional results, the superiority of our novel method is verified. Not only did the material Removal Rate Increase to 200%, but also the surface roughness was improved and the machining load decreased dramatically.
