Drilling of e-glass fibre reinforced polymer composite

Manna, Alakesh; Mohindra, Vivek; Patra, Suprakash; Salodkar, Sandeep M.

doi:10.1504/ijmmm.2008.020968

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…In [54], it is mentioned that tungsten carbide with 6 and 8% cobalt micro grain (for ISO grades K10 and K20 respectively) and diamond coating, is a suitable tool material for drilling composites when a feed rate of 0.05 to 0.15 mm/rev was used. Whereas Manna A. et al [55], observed that the machined surface quality decreased with the increase of cutting tool diameter above 6 mm. In addition, it was found that a carbide tool produces a smaller thrust force compared to an HSS drill for the feed rate of 50 and 250 mm/min [56].…”

Section: Effect Of the Cutting Tool On The Hole Geometrymentioning

confidence: 94%

“…Manna et al [55] found that the spindle speed was a more influential parameter affecting surface roughness (Ra) than the feed rate with the contribution of 60.22% and 32.49% respectively when a spindle speed of 200, 800, 1400, 2000 rev/min and a feed rate of 0.02, 0.05, 0.08, 0.11 mm/rev was used for drilling e-glass (alumino-borosilicate glass) fiber reinforced polymer composite.…”

Section: Effect Of CM Process On Surface Roughnessmentioning

confidence: 99%

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Analytical and experimental investigation of the effects of the machining processes on the mechanical behaviour of carbon epoxy composite laminates

Saleem¹

2021

Preprint

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To join various components, drilling is the most frequently used machining process for carbon fiber-reinforced polymer (CFRP) composites. However, it induces various defects such as microcracks, resin degradation and fiber pull-out. In order to eliminate these problems, an appropriate machining process must be employed. Therefore, the main objective of this research is to conduct an analytical and experimental study to investigate the influence of the machining process on the mechanical behaviour of a CFRP structural component and assembly drilled with conventional (CM) and abrasive water-jet machining (AWJM) processes. All CFRP composite laminates did not demonstrate any prominent change in the mechanical properties during static tests. However, fatigue tests showed that the damage accumulation in conventional machining was higher than that in AWJM specimens. Thus, in the case of CM specimens the endurance limit was less than AWJM specimens. The difference in the mechanical behaviour of the composite laminates can be related to the initial surface integrity induced by the difference in the mechanism of material removal of each machining process. This difference in surface texture was responsible for the initiation of stress concentration sites as evident from infrared thermographic stress and thermal analysis. The heat dissipated from all laminates was also correlated to the damage accumulation. It was identified that the surface roughness criterion (Ra) used for the characterization of the surface roughness for metals was not suitable for composites as roughness values of all specimens were same, however different mechanical behaviour was observed. An IR thermographic damage criterion (TDC) was developed which related the temperature threshold area with damage evolution. TDC further confirms the superiority of AWJM compared to CM process. Further it was identified that AWJM process was less sensitive to the composite's stacking sequence compared to conventional machining. The main conclusion of this research is that the failure modes of composite structure parts and assembly are highly affected by the choice of the machining process. This study therefore confirms that the machining process has an important contribution for the design of composite parts and assembly in order to improve the service life of the machined composite structures.

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Section: Effect Of the Cutting Tool On The Hole Geometrymentioning

confidence: 94%

Section: Effect Of CM Process On Surface Roughnessmentioning

confidence: 99%

Analytical and experimental investigation of the effects of the machining processes on the mechanical behaviour of carbon epoxy composite laminates

Saleem¹

2021

Preprint

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“…This damage is linked to the interaction between the cutting tool (conventional machining) and the composite material. Manna et al (2008) found that the spindle speed has the highest effect on surface roughness height (Ra) followed by the feed rate. Kilickap (2010) concluded that higher feed rates and cutting speeds resulted in higher damage.…”

Section: Introductionmentioning

confidence: 99%

Prediction of critical thrust force for exit-ply delamination during drilling composite laminates: thermo-mechanical analysis

Saoudi¹,

Zitoune

Gururaja

et al. 2016

IJMMM

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Drilling damage, such as delamination at the hole exit, is known to adversely affect the load carrying capability of a structure resulting in reduced endurance limits and overall reduction in structural integrity. In this context, the present work studies the influence of temperature of machining on the critical thrust force responsible for delamiantion at the hole exit. An analytical model considering thermo-elastic field equations has been established with the aim of predicting the critical thrust force. The validation of this model has been conducted at room temperature via punching tests carried out on carbon fibre epoxy multi-directional composite laminates. Some difference in predictions exists which are mainly attributed to the variability in ply thicknesses due to the manufacturing process. Such an analysis underscores the need to explicitly account for machining temperature effects on machining damage characterisation.

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A Review on Factors Affecting Machinability and Properties of Fiber-Reinforced Polymer Composites

Alarifi

2022

Journal of Natural Fibers

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Drilling of e-glass fibre reinforced polymer composite

Cited by 3 publications

References 7 publications

Analytical and experimental investigation of the effects of the machining processes on the mechanical behaviour of carbon epoxy composite laminates

Analytical and experimental investigation of the effects of the machining processes on the mechanical behaviour of carbon epoxy composite laminates

Prediction of critical thrust force for exit-ply delamination during drilling composite laminates: thermo-mechanical analysis

A Review on Factors Affecting Machinability and Properties of Fiber-Reinforced Polymer Composites

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