Drilling induced tearing defects in rotary ultrasonic machining of C/SiC composites

Feng, Pingfa; Wang, Jianjian; Zheng, Jingzhen

doi:10.1016/j.ceramint.2016.10.010

Cited by 106 publications

(20 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ceramic matrix composites are especial hard-tomachine materials. The grinding mechanism is complicated and the machining process requires large energy and force [11][12][13]. Some reports have been existed on the grinding process of ceramic matrix composites.…”

Section: Introductionmentioning

confidence: 99%

Effect of fiber orientation on surface microscopic characteristics of surface grinding of unidirectional C/SiC composites

Zhang

Wang

Huo

et al. 2019

Materialwissenschaft Werkst

View full text Add to dashboard Cite

Ceramic matrix composites have complex structures. For exploring the impact factors of machined surface quality and material removal mechanism, its internal structure must be decoupled, and then a unidirectional C/SiC composite was designed and fabricated in this paper. Through a series of representative surface grinding experiments, the machined surface of the composites was characterized by 3D profile test, and the microscopic characteristics and material removal mechanism of the grinding surface were discussed in detail. The results showed that the fiber orientation had a significant effect on the surface quality, and the order of 3D surface roughness was longitudinal > normal > transverse. On the basis of the systematic analysis of the microscopic characteristics of the machined surface, the brittle fracture was the dominant form of material removal in grinding process. Further, combined with 3D surface profile and surface micromorphology, the effect of fiber orientation on the removal mechanism of composites was revealed. The results not only enrich the machinability and improve the surface quality of unidirectional C/SiC composites, but also provide some guidance for grinding of the woven composites.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of fiber orientation on surface microscopic characteristics of surface grinding of unidirectional C/SiC composites

Zhang

Wang

Huo

et al. 2019

Materialwissenschaft Werkst

View full text Add to dashboard Cite

show abstract

“…Cutting forces, depending on the mechanical properties of the machined material such as, drilling parameters, number of drill flutes, drill radius, drill geometrical structures and selected parameters, such as spindle speed, feed rate, cutting depth and tool geometry cause the differences in thrust force values [11]. Especially, great fluctuations in thrust forces in harmonic deviation take place in the drilling of layered structural materials [12]. At the beginning of the process, when the tip of the drill starts to penetrate into the workpiece, the fluctuation size in thrust force reaches its highest levels, and after falling a little, it remains stable [13].…”

Section: Introductionmentioning

confidence: 99%

Investigate the Fluctuation Size in Thrust Force and Chip Morphology in Drilling

Demir

2018

Celal Bayar Üniversitesi Fen Bilimleri Dergisi

View full text Add to dashboard Cite

Drilling is a widely used production method, having a broad range of applications taking part in machining operations. The length of the cutting edge of the drill causes variations in cutting speed, resulting in undesired outputs. In order to decrease this adverse impact in drilling, selecting higher point angles is an obligation, associated with three different kinds of feed rates and spindle speeds. The aim of this study is to investigate the effect of feed rate, spindle speed, and point angle on the fluctuation size in thrust force besides the effect of the fluctuation size in thrust force on the surface roughness, tool wear and chip morphology. In conclusion, while higher point angles provided optimum outputs such as lower fluctuation size in thrust force, less tool wear, better surface quality and continuous chip form, the effect of feed rate and spindle speed on these outputs varied depending on each other. With the stability in fluctuation size in thrust force, less tool wear took place, and better surface quality and continuous chip form were achieved. However, due to the effect of vibrations, higher fluctuation size in thrust force caused undesired outputs, such as poor surface quality, more tool wear, removal chip in short and brittle form during the drilling operations.

show abstract

“…However, due to the existence of hard ceramic matrix, CMCs are regarded as typical difficult-to-machine materials. In order to improve the machining of CMCs, various conventional and unconventional processing methods have been introduced, such as grinding [2], laser beam machining [3], rotary ultrasonic machining [4]. Rotary ultrasonic machining has been sufficiently proved to be suitable for the hole manufacturing of CMCs, with dramatically reduced cutting force and improved hole exit quality [4].…”

Section: Introductionmentioning

confidence: 99%

Preliminary Investigation on Rotary Ultrasonic Face Milling of Ceramic Matrix Composite C/Sic: Design of Experiments

Wang¹,

Zhang²,

Feng³

2017

Proceedings of the 2017 International Conference on Mechanical, Electronic, Control and Automation Engineering (MECAE 2017)

Self Cite

View full text Add to dashboard Cite

Abstract. The feasibility of rotary ultrasonic face milling (RUFM) of ceramic matrix composites was evaluated experimentally in this study. Preliminary experimental results show that, comparing with conventional grinding (CG), RUFM can reduce cutting forces dramatically though with a little enlargement of surface roughness. Both in CG and RUFM, a positive dependency of surface roughness on cutting force can be deduced. For machining of 2D-C/SiC composites, the fiber direction significantly affects the cutting force and surface roughness. When fibers are parallel to the cutting plane, the cutting force and surface roughness are much larger than that when fibers are perpendicular to the cutting plane.

show abstract

Drilling induced tearing defects in rotary ultrasonic machining of C/SiC composites

Cited by 106 publications

References 28 publications

Effect of fiber orientation on surface microscopic characteristics of surface grinding of unidirectional C/SiC composites

Effect of fiber orientation on surface microscopic characteristics of surface grinding of unidirectional C/SiC composites

Investigate the Fluctuation Size in Thrust Force and Chip Morphology in Drilling

Preliminary Investigation on Rotary Ultrasonic Face Milling of Ceramic Matrix Composite C/Sic: Design of Experiments

Contact Info

Product

Resources

About