An approach towards damage free machining of CFRP and GFRP composite material: a review

Abstract

Over the last decade, the use of polymeric composite material has increased considerably, and as a result, machinability of such material has also increased. The main aim of this work is to emphasize on the conventional and unconventional machining of composite materials, more specifically on drilling of carbon fiberreinforced polymer and glass fiber-reinforced polymer. Additional concentration on tool materials and geometry, roughness of drill surface, thrust force and delamination at entry and exit with influence of point angle of tool, variable feed rate, and variable spindle speed. Over the last few years, many studied on the effect of cutting parameters and tool geometry using conventional machining, the phenomena associated with unconventional machining of composite material requires some supplementary studies in order to make damage free machining of composite materials.

Cryogenic cooling-induced process performance and surface integrity in drilling CFRP composite material

“…The abrasive nature of composite materials leads to shorter tool-life in drilling process [1], and this is not a desired output from drilling operation as it affects the cost of operation and also alters the dimensional accuracy and the quality of drilled holes. Less rounding over the increased number of drilled holes indicates slow progression of drill bit's wear which is vital for producing high-accuracy holes and reduced delamination.…”

“…The importance of delamination factor in drilling of composite materials has been discussed in detail in the literature, and the effects of various input parameters such as feed rate, drill bit geometry, cutting speed, etc., on delamination factor have been studied extensively [1,2]. This section of the current paper presents the influence of cryogenic cooling on delamination factor in drilling of CFRP composite material.…”

“…According to the literature, delamination is a major problem in manufacturing the components/parts and assembly in composite materials, and drilling is the most commonly used manufacturing process which is affected due to anisotropy and non-homogeneity of composite material [1]. It was also noted that tool-wear, high trust force, and torque that eventually affect the quality of produced hole are also considered as issues that need to be addressed [2][3][4][5].…”

Optimization of process parameters in drilling of SMC composites using Taguchi method

“…The review of previous works about damage free machining was carried out by Kumar. Author pointed out the concentration on tool geometry and materials, surface roughness of drilled surface, thrust force, push and pull out delamination at entry and exit with influence of point angle of drill bit, feed rate, spindle speed and conventional and non-conventional applications [15]. Ramesh et al [16] worked on the influence of tool materials on thrust force and delamination in drilling of GFRP composites.…”

Edge Delamination and Residual Properties of Drilled Carbon Fiber Composites with and without Short-Aramid-Fiber Interleaf

“…However, due to the typically poor heat, impact and delamination resistance [8] of CFRP, many applications require joining of CFRP with other components, either through adhesive joining or mechanical fixing after machining. Although adhesive joining is widely used owing to its designable shape by using automatic tape laying or filament winding process [9], mechanical joining after drilling and machining is still required for the assembly of CFRP structures and for higher reliability [10][11][12][13][14][15][16].…”