单向碳纤维复合材料平面磨削粗糙度模型研究
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摘要
碳纤维复合材料由于其优良的力学性能在航空航天领域具有重要的应用。文中针对单向碳纤维复合材料C/SiC开展平面磨削试验研究,建立了粗糙度数学模型,揭示了复合材料加工表面粗糙度的影响机制。试验发现碳纤维复合材料C/SiC沿典型方向磨削时粗糙度符合该规律:轴向>法向>径向。此外,磨削过程中,表面粗糙度随进给速度、磨削深度的增加而增大,随着砂轮转速的增加,加工质量具有明显的改善。文中研究对提高复合材料加工精度具有显著的经济意义,并可为碳纤维复合材料体系的精密加工提供一定的理论和试验支撑。
Carbon fiber composites have important applications in the aerospace industry due to their excellent mechanical properties. In this paper,the planar grinding experiment of unidirectional carbon fiber composite C/SiC is carried out,and the mathematical model of roughness is established,which reveals the influence mechanism of surface roughness of composite processing. It is found that the roughness of the carbon fiber composite C/SiC grinding in a typical direction conforms to the law:axial>normal>radial. In addition,during the grinding process,the surface roughness increases with the increase of the feed speed and the grinding depth. As the grinding wheel speed increases,the machining quality is significantly improved. The research of the thesis has significant economic significance for improving the processing precision of composite materials,and can provide theoretical and experimental support for the precision machining of carbon fiber composite systems.
Carbon fiber composites have important applications in the aerospace industry due to their excellent mechanical properties. In this paper,the planar grinding experiment of unidirectional carbon fiber composite C/SiC is carried out,and the mathematical model of roughness is established,which reveals the influence mechanism of surface roughness of composite processing. It is found that the roughness of the carbon fiber composite C/SiC grinding in a typical direction conforms to the law:axial>normal>radial. In addition,during the grinding process,the surface roughness increases with the increase of the feed speed and the grinding depth. As the grinding wheel speed increases,the machining quality is significantly improved. The research of the thesis has significant economic significance for improving the processing precision of composite materials,and can provide theoretical and experimental support for the precision machining of carbon fiber composite systems.
引文
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[15] Zhang L,Ren C,Ji C,et al. Effect of fiberorientations on surface grinding process of unidirectional C/SiC composites[J]. Applied Surface Science,2016,366:424-431.
[16] Cao X,Lin B,Zhang X. A study on grinding surface waviness of woven ceramic matrix composites[J]. Applied Surface Science,2013,270(14):503-512.
[17] Cao X,Lin B,Wang Y,et al. Influence of diamond wheel grinding process on surface micro-topography and properties of SiO2/SiO2composite[J]. Applied Surface Science,2014,292(1):181-189.
[18]丁凯,傅玉灿,苏宏华,等. C/Si C复合材料组织对磨削力与加工表面质量的影响[J].中国机械工程,2013,24(14):1886-1890.
[19]冉冲,卢守相,王东坡,等.石英纤维增强陶瓷基复合材料制孔工艺研究[J].金刚石与磨料磨具工程,2016,36(2):37-42.
[2]王晶,成来飞,刘永胜,等.碳化硅陶瓷基复合材料加工技术研究进展[J].航空制造技术,2016,59(15):50-56.
[3] Ramulu M,Jenkins M G,Guo Z. Abrasive water jet machining mechanisms in continuous-fiber ceramic composites[J]. Journal of Composites,Technology and Research,2001,23(2):82-91.
[4] Jones A H,Trueman C,Dobedoe R S,et al. Production and EDM of Si3N4-TiB2 ceramic composites[J]. British Ceramic Transactions,2001,100(2):49-54.
[5] Chen X,Lotshaw W T,Ortiz A L,et al. Laser drilling of advanced materials:effects of peak power,pulse format,and wavelength[J].Journal of Laser Applications,1996,8(5):233-239.
[6] Wu M L,Ren C Z,Xu H Z. Comparative study of micro topography on laser ablated C/SiC surfaces with typical uni-directional fibre ending orientations[J]. Ceramics International,2016,42(7):7929-7942.
[7] Hocheng H,Tai N H,Liu C S. Assessment of ultrasonic drilling of C/SiC composite material[J]. Composites Part A:Applied Science and Manufacturing,200031(2):133-142.
[8] Li Z C,Jiao Y,Deines T W,et al. Rotary ultrasonic machining(RUM)on ceramic matrix composites(CMC):designed experiments[C]//Proceedings of the Fifth International Conference on High Temperature Ceramic Matrix Composites(HTCMC-5),Seattle,WA,2004,12-16.
[9] Feng P,Wang J,Zhang J,et al. Drilling induced tearing defects in rotary ultrasonic machining of C/SiC composites[J]. Ceramics International,2017,43(1):791-799.
[10] Xing Y,Deng J,Zhang G,et al. Assessment in drilling of C/C-SiC composites using brazed diamond drills[J]. Journal of Manufacturing Processes,2017,26:31-43.
[11] Spur G,Cartsburg H. Grinding reinforced aluminium oxide[J]. Industrial Diamond Review,1993,53(555):92-7.
[12] Rezaei S M,Suto T,Waida T,et al. Creep feed grinding of advanced ceramics[J]. Proceedings of the Institution of Mechanical Engineers,Part B:Journal of Engineering Manufacture,1992,206(2):93-99.
[13] Carroll J W,Todd J A,Ellingson W A,et al. Laser machining of ceramic matrix composites[M]. New Jersey:John Wiley&Sons,2009,323-330.
[14] Tashiro T,Fujiwara J,Takenaka Y. Grinding of C/C-Sic Composite in Dry Method[M]. London:Springer,2007,351-352.
[15] Zhang L,Ren C,Ji C,et al. Effect of fiberorientations on surface grinding process of unidirectional C/SiC composites[J]. Applied Surface Science,2016,366:424-431.
[16] Cao X,Lin B,Zhang X. A study on grinding surface waviness of woven ceramic matrix composites[J]. Applied Surface Science,2013,270(14):503-512.
[17] Cao X,Lin B,Wang Y,et al. Influence of diamond wheel grinding process on surface micro-topography and properties of SiO2/SiO2composite[J]. Applied Surface Science,2014,292(1):181-189.
[18]丁凯,傅玉灿,苏宏华,等. C/Si C复合材料组织对磨削力与加工表面质量的影响[J].中国机械工程,2013,24(14):1886-1890.
[19]冉冲,卢守相,王东坡,等.石英纤维增强陶瓷基复合材料制孔工艺研究[J].金刚石与磨料磨具工程,2016,36(2):37-42.
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