Micro-mechanical modeling of machining of FRP composites – Cutting force analysis

Rao, G. V. Gopala; Mahajan, Puneet; Bhatnagar, Naresh

doi:10.1016/j.compscitech.2006.08.010

Cited by 204 publications

(92 citation statements)

References 23 publications

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“…Traditional micromechanical models focused mainly on the analysis of stress field [1][2][3], or predicting crack propagation using a prescribed failure criterion for composites with small numbers of fibers [4][5][6]. The ability to cope with inhomogeneity or/and disorder is essential in order to predict the damage process of a composite from micro cracking to catastrophic failure.…”

Section: Introductionmentioning

confidence: 99%

Microstructure effects on transverse cracking in composite laminae by DEM

Sheng¹,

Yang²,

Tan³

et al. 2010

Composites Science and Technology

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A particle discrete element method (DEM) was employed to simulate transverse cracking in laminated fiber reinforced composites. The microstructure of the laminates was modeled by a DEM model using different mechanical constitutive laws and materials parameters for different constituents, i.e., fiber, matrix and fiber/matrix interface. Rectangular, hexagonal and random fiber distributions were simulated to study the effect of fiber distribution on the transverse cracking. The initiation and dynamic propagation of transverse cracking and interfacial debonding were all captured by the DEM simulation, which showed similar patterns to those observed from experiments. The effect of fiber volume fraction was also studied for laminae with randomly distributed fibers. It was found that the distribution and volume fraction of fibers affected not only the transverse cracking path, but also the behavior of matrix plastic deformation and fiber/matrix interface yielding in the material.

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Section: Introductionmentioning

confidence: 99%

Microstructure effects on transverse cracking in composite laminae by DEM

Sheng¹,

Yang²,

Tan³

et al. 2010

Composites Science and Technology

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“…Looking for minimum in the average mutual information to determine the i we obtained 7,8,6,4, and 7, respectively, for increasing spindle speed (2,000, 3,500, 5,000, 6,500 to 8,000 rpm) [11]. In further analysis, we estimated the embedding delay for the system to i = 7.…”

Section: Embedding and Recurrence Plots Analysismentioning

confidence: 99%

“…Due to various possible damage mechanisms (such as fiber pullout, fiber fragmentation and delamination, matrix burning, and/or cracking), poor cut surface quality can occur [8,9].…”

Section: Introduction and Experimental Datamentioning

confidence: 99%

Dynamical changes during composite milling: recurrence and multiscale entropy analysis

Litak

Syta

Rusinek

2011

Int J Adv Manuf Technol

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Fluctuations describing chatter in the milling process of a composite material were analyzed using statistical, recurrence, and multiscaled entropy analyses. Through changing the rotational speed, we observed the appearance of chatter vibrations and signatures of intermittency. The corresponding characteristic change of recurrences could be used to invent a new efficient control procedure of milling. The workpiece was prepared from nonuniform material based on epoxy-polymer matrix composite reinforced by carbon fibers.

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“…Therefore, it requires more attention for selection of cutting tool (tool material, coating type and tool geometry) and cutting parameters (feed rate and cutting speed) when machinability of CFRP composite materials become current issue [9,11]. Moreover, delamination that is defined as layer segregation in entry and exit of hole is the most common problem in drilling of composites [12].…”

Section: Introductionmentioning

confidence: 99%

Investigation on hole quality of cutting conditions in drilling of CFRP composite

2017

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Abstract. Surface damages and delamination occurred in drilling of the carbon fiber reinforced polymer composite materials, which change depending on their physical and mechanical properties and cutting conditions, and so affect the hole quality. Therefore, it is requires to be selective with regards to drill geometry and drilling parameters during drilling of CFRP. This study investigated the effects of cutting parameters and drill geometry on the hole quality in terms of hole diameter and surface roughness during the drilling of CFRP composite laminate. Drilling experiments were performed with three different levels of drilling parameters that are point angle, cutting speed and feed rate. At the end of the drilling tests, it has determined that if the feed rate increases, the surface roughness value increases while the hole diameter decreases. The feed rate was determined as the most important parameter with a PCR of 78.02% according to analysis of variance. The better hole quality was obtained with 130° drill among the three drill geometry.

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Micro-mechanical modeling of machining of FRP composites – Cutting force analysis

Cited by 204 publications

References 23 publications

Microstructure effects on transverse cracking in composite laminae by DEM

Microstructure effects on transverse cracking in composite laminae by DEM

Dynamical changes during composite milling: recurrence and multiscale entropy analysis

Investigation on hole quality of cutting conditions in drilling of CFRP composite

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