Machining Unidirectional Composites using Single-Point Tools: Analysis of Cutting Forces, Chip Formation and Surface Integrity

Kahwash, Fadi; Shyha, Islam; Maheri, Alireza

doi:10.1016/j.proeng.2015.12.534

Cited by 15 publications

(13 citation statements)

References 21 publications

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“…Indeed, the chip formation of synthetic fiber composites depends on the matrix nature. For thermoset composites, the removed chip is often discontinuous or powdery [26][27][28][29][30][31][32][33][34][35]. This is inherently related to the mechanical behavior of the thermoset composite during the cutting solicitations.…”

Section: Chip Formation Of Udf/pp Compositesmentioning

confidence: 99%

Mechanics of material removal when cutting natural fiber reinforced thermoplastic composites

Chegdani

Mansori

2018

Polymer Testing

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. This is an author-deposited version published in: https://sam.ensam.eu Handle ID A B S T R A C TThis paper aims to study the machinability of natural fiber reinforced thermoplastic composites by investigating the mechanics of chip formation and the multiscale cut surface's quality induced by the orthogonal cutting process. Unidirectional flax fibers reinforced polypropylene (UDF/PP) composite has been tested by orthogonal cutting experiments. Mechanical tensile and shear tests have been conducted on UDF/PP specimens to relate the mechanical behavior to the cutting behavior. Results show that UDF/PP composites produce a continuous chip at all the considered cutting conditions. This is inherently related to the specific mechanical behavior of flax fibers inside the thermoplastic matrix under cutting solicitations. The cutting behavior induces a consequent surface damages in the form of debonding zones and uncut fiber extremities. Results demonstrate that the cutting depth has the most significant influence on the machinability after sorting the pertinent scales of the cut surface using the multiscale surface analysis approach.

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Section: Chip Formation Of Udf/pp Compositesmentioning

confidence: 99%

Mechanics of material removal when cutting natural fiber reinforced thermoplastic composites

Chegdani

Mansori

2018

Polymer Testing

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“…The cutting resistance is increasing in line with decreasing rake angle, and so is the plastic deformation and the work hardening of the workpiece. 18 Many researchers have verified the negative rake angle of grinding abrasives. 19 Thus, grinding can induce noticeable surface hardening.…”

Section: Resultsmentioning

confidence: 99%

Effects of process combinations of milling, grinding, and polishing on the surface integrity and fatigue life of GH4169 components

Quan

Chen

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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The nickel-based superalloy GH4169 is widely applied in the aviation industry due to its outstanding mechanical properties. However, many blades of GH4169 are still produced by milling and manual polishing, which is costly and unreliable. In this article, GH4169 superalloy components manufactured with combination processes of milling, grinding, and polishing were comparatively studied involving surface integrity and fatigue performance. Test results indicate that the final polishing is the most dominant process that influences the high-cycle fatigue life of GH4169 components. Samples produced via cubic boron nitride grinding and numerical control polishing with a diamond-rubber wheel exhibit fatigue limits of 150 MPa higher than the milled and manually polished samples. Cubic boron nitride grinding induces a considerable compressive residual stress profile with a magnitude of -930 MPa and a depth of 200 μm. Milling induces a typical “hook” residual stress profile with 318 MPa at the surface. Polishing affects the machined surface by two ways, the removal effect and the squeezing effect. The squeezing effect induces a shallow compressive residual stress with approximately −1000 MPa, therefore improves the surface condition. However, inevitable omissions, scratches, texture disorders, and knock marks in hand-polishing are the main causes of the unstable high-cycle fatigue life of hand-polished components.

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“…F.Kahwash meneliti gaya potong pada material GFRP, dan menemukan bahwa besar sudut geram mempengaruhi gaya potong yang terjadi [5]. Sedangkan Javier T.J mengatakan bahwa keausan pahat berkurang dengan menurunnya gaya potong [3].…”

Section: Geometri Pahatunclassified

Pengaruh Sudut Geram dan Parameter Pemesinan Terhadap Keausan Tepi Pahat High Speed Steel (HSS) pada Proses Bubut Glass Fibre Reinforce Polymer (GFRP)

Nusa

Ridwan

2018

j.sist.mek.termal.

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Machining Unidirectional Composites using Single-Point Tools: Analysis of Cutting Forces, Chip Formation and Surface Integrity

Cited by 15 publications

References 21 publications

Mechanics of material removal when cutting natural fiber reinforced thermoplastic composites

Mechanics of material removal when cutting natural fiber reinforced thermoplastic composites

Effects of process combinations of milling, grinding, and polishing on the surface integrity and fatigue life of GH4169 components

Pengaruh Sudut Geram dan Parameter Pemesinan Terhadap Keausan Tepi Pahat High Speed Steel (HSS) pada Proses Bubut Glass Fibre Reinforce Polymer (GFRP)

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