Experimental investigation of drilling damage and stitching effects on the mechanical behavior of carbon/epoxy composites

Turki, Yosra; Habak, Malek; Velasco, Raphaël; Aboura, Zoheir; Khellil, Kamel; Vantomme, Pascal

doi:10.1016/j.ijmachtools.2014.06.004

Cited by 76 publications

(33 citation statements)

References 26 publications

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“…On another hand, it makes the distribution of some local defects, e.g., fiber pullout, delamination, spalling, etc., exhibits regional symmetrical characteristic. Such findings are confirmed by pertinent research work [61,64,65].…”

Section: Frp-phase Drilling: Brittle Fracture Dominant Mechanismssupporting

confidence: 76%

“…However, these factors are not reviewed here individually since the key objective of the paper aims to survey the mechanism issues focused on hybrid composite drilling. Readers are recommended to refer to the mentioned literature [23,24,27,[57][58][59][60][61][62][63]. It should be stressed that in drilling, the changeable fiber breaking type vs. θ, on one hand, is a key contributor to severe hole-wall damage like delamination, fiber pullout, matrix degradation, etc.…”

Section: Frp-phase Drilling: Brittle Fracture Dominant Mechanismsmentioning

confidence: 99%

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Recent advances in drilling hybrid FRP/Ti composite: A state-of-the-art review

Mkaddem

Mansori

2016

Composite Structures

208

109

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Hybrid composite stack, especially FRP/Ti assembly, is considered as an innovative structural configuration for manufacturing the key load-bearing components favoring energy saving in the aerospace industry. Several applications require mechanical drilling for finishing hybrid composite structures. The drilling operation of hybrid FRP/Ti composite, however, represents the most challenging task in modern manufacturing sectors due to the disparate natures of each constituent involved and the complexity to control tool-material interfaces during one single cutting shot. Special issues may arise from the severe subsurface damage, excessive interface consumption, rapid tool wear, etc. In this paper, a rigorous review concerning the state-of-the-art results and advances on drilling solutions of hybrid FRP/Ti composite was presented by referring to the wide comparisons among literature analyzes. The multiple aspects of cutting responses and physical phenomena generated when drilling these materials were precisely addressed. A special focus was made on the material removal modes and tool wear mechanisms dominating the bi-material interface consumption (BIC) with respect of investigating strategies used. The key conclusions from the literature review were drawn to point out the potential solutions and limitations to be necessarily overcome for reaching both (i) enhanced control of drilling operation, and (ii) better finish quality of FRP/Ti parts.

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Section: Frp-phase Drilling: Brittle Fracture Dominant Mechanismssupporting

confidence: 76%

Section: Frp-phase Drilling: Brittle Fracture Dominant Mechanismsmentioning

confidence: 99%

Recent advances in drilling hybrid FRP/Ti composite: A state-of-the-art review

Mkaddem

Mansori

2016

Composite Structures

208

109

View full text Add to dashboard Cite

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“…Several studies have shown that delamination is basically affected by the choice of the machining variables, cutting tool geometrical parameters (Singh, Bhatnagar, and Viswanath 2008) (sunny, Babu, and Philip 2014), as well as the manufacturing method and the nature of composite laminates (Ho et al 2012) (Saleem et al 2013). Turki et al (Turki et al 2014) reported that an increase in the feed rate leads to a considerable increase in the delamination factor while the low feed rate creates minor damage on carbon/epoxy composites. Ismail et al (Ismail et al 2016b) analysed the effects of cutting parameters and aspect ratios on delamination and surface roughness of hemp fibre reinforced polycaprolactone (HFRP) laminates and compared the results with CFRP composite materials.…”

mentioning

confidence: 99%

Drilling Behavior of Flax/Poly(Lactic Acid) Bio-Composite Laminates: An Experimental Investigation

Lotfi

Dao

2018

Journal of Natural Fibers

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This paper aims to investigate the effects of machining parameters such as spindle speed, feed rate and drill diameter on machinability of flax/poly(lactic acid) bio-composites, to analyze the relations among cutting forces, drillinginduced damages and crack propagation of the drilled samples. In particular, a set of drilling experiments were conducted using different drilling conditions and a new low-cost measurement set-up was developed to measure the cutting force during the drilling operation. In addition, the analysis of variance (ANOVA) was applied to identify the significance of each individual cutting parameter. The experimental results indicate the relation between the thrust force and the machinability parameters of flax fiber reinforced bio-composite.The increase in spindle speed reduces thrust force and delamination size of the drilled holes, whereas an increase in feed and drill diameter leads to a considerable increase in both thrust force and delamination factor. The effect of spindle speed on peripheral damage was not significant for the drills tested, though the feed rate was found to play the key role on the delamination damage area. The best hole quality was achieved with the samples drilled at spindle speed and feed rate of 3000 rpm and 0.11 mm/rev, respectively.

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“…Unfortunately, the cutting temperature usually reaches the maxima at the CFRP drill exit [4,7]. This further worsens the drill-exit damages [14] and the serious drilling damages will also degrade the https://doi.org/10.1016/j.ijmachtools.2018.08.002 Received 28 March 2018; Received in revised form 1 August 2018; Accepted 6 August 2018 mechanical properties of the machined CFRP components [15,16]. Those direct and indirect negative effects of high drilling temperatures have brought great challenges to quality control.…”

mentioning

confidence: 99%

Drill-exit temperature characteristics in drilling of UD and MD CFRP composites based on infrared thermography

Zhang

Wang

et al. 2018

International Journal of Machine Tools and Manufacture

124

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A B S T R A C TThis paper presents a comprehensive study on the complex drill-exit temperature characteristics in the drilling of unidirectional (UD) and multidirectional (MD) CFRPs using a state-of-art microscopy infrared imaging system. For the first time, temperature variation and distribution at drill exit have been revealed in full detail, associated with the CFRP material properties and drilling conditions. Results suggest that the actual drill/CFRP interactions have critical but similar effects on the drill-exit temperatures for UD and MD CFRPs. Specifically, three distinct cutting regions with varying temperature characteristics are evident when the main cutting edge is acting on the drill exit material. In all cases, the temperature distribution features elliptical shape, of which the eccentricity depends on the lay-up sequence and the drilling depth. In addition, the real-time temperature profiles and 2D/3D maximum temperature distribution maps are created with high visualization. With the aid of those findings, the relationships between drilling temperature maxima, their locations and drilling depths have been discovered and temperature effects on drill-exit damages have been elucidated for the first time. MD CFRP is proven more difficult to achieve high drilling qualities at certain fiber cutting angles than UD CFRP due to the associated temperature effects. Such important knowledge enables the identification of the heat affected zones and subsequently informs strategies for reducing the negative temperature effects.

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Experimental investigation of drilling damage and stitching effects on the mechanical behavior of carbon/epoxy composites

Cited by 76 publications

References 26 publications

Recent advances in drilling hybrid FRP/Ti composite: A state-of-the-art review

Recent advances in drilling hybrid FRP/Ti composite: A state-of-the-art review

Drilling Behavior of Flax/Poly(Lactic Acid) Bio-Composite Laminates: An Experimental Investigation

Drill-exit temperature characteristics in drilling of UD and MD CFRP composites based on infrared thermography

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