Occurrence and propagation of delamination during the machining of carbon fibre reinforced plastics (CFRPs) – An experimental study

Hintze, Wolfgang; Hartmann, Dirk; Schütte, Christoph

doi:10.1016/j.compscitech.2011.08.002

Cited by 221 publications

(99 citation statements)

References 17 publications

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“…12. In this figure, the regions denoted with the letter ''A'' are the regions of delamination [22]. The delamination generation and maximum tangential force locations (Table 4) fall within the same range for 01, 451, and 901 fiber directions.…”

Section: Discussion Of Milling Forces and Surface Qualitymentioning

confidence: 88%

“…Delamination on the machined surfaces may result in rejection of the parts, and delamination is known to be closely related to tool wear. Recently, Hintze et al [22] conducted a detailed study on the relationship between tool wear and delamination. They concluded that fiber direction of the top layer and the tool wear together, influence the delamination.…”

Section: Discussion Of Milling Forces and Surface Qualitymentioning

confidence: 99%

“…The fiber direction angle is measured counterclockwise [22] with reference to the tool movement direction as explained in Fig. 1 interaction between the tool and the material changes as the cutting tool rotates during milling.…”

Section: Milling Of Unidirectional Composite Laminatesmentioning

confidence: 99%

“…They concluded that their model works well when fracture plane angle is between 901 and 1801. Recently, Hintze et al [22] investigated machining CFRPs during slot milling experiments and observed that occurrence of delamination is closely related to tool wear and top layer fiber cutting angle. Lopez de Lacalle et al [23] studied the performance of multi-tooth cutting tools during the trimming process of CFRPs.…”

Section: Introductionmentioning

confidence: 99%

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Mechanistic force modeling for milling of unidirectional carbon fiber reinforced polymer laminates

Karpat

Bahtiyar

Değer

2012

International Journal of Machine Tools and Manufacture

156

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a b s t r a c tCarbon fiber reinforced polymer (CFRP) usage in the aerospace industry has been steadily increasing due to its superior material properties such as high strength, low weight, high resistance to corrosion, and a low thermal expansion coefficient. In addition, CFRP parts are produced near-net-shape, a process that eliminates rough machining operations. However, machining operations such as drilling, side milling, and slotting are still necessary to give the CFRP parts their final shape. A majority of the studies on machining of CFRP laminates are on drilling. The number of studies on milling of CFRPs is quite limited. In this study, a mechanistic cutting force model for milling CFRPs is proposed based on experimentally collected cutting force data during slot milling of unidirectional CFRP laminates using two different polycrystalline diamond cutters. Cutting force coefficients in radial and tangential directions are calculated as a function of fiber cutting angle. The relationship is represented with simple sine functions. The mechanistic model is shown to be capable of predicting cutting forces during milling of multidirectional CFRP laminates. The experimental milling force measurements and predicted milling forces agree well with each other. Surface milling experiments were also conducted to investigate the relationship between milling forces and surface quality. Some suggestions on surface milling of CFRP laminates are given based on these observations.

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Section: Discussion Of Milling Forces and Surface Qualitymentioning

confidence: 88%

Section: Discussion Of Milling Forces and Surface Qualitymentioning

confidence: 99%

Section: Milling Of Unidirectional Composite Laminatesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanistic force modeling for milling of unidirectional carbon fiber reinforced polymer laminates

Karpat

Bahtiyar

Değer

2012

International Journal of Machine Tools and Manufacture

156

View full text Add to dashboard Cite

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“…Eneyew and Ramulu observed the fiber-pullouts from θ = 135 • to θ = 175 • and from θ = 315 • to θ = 355 • [3]. Other researchers investigated the effect of delamination [4][5][6][7][8]. Chen introduced the delamination factor as a quotient of delaminated diameter to bore diameter for the qualitative delamination description [9].…”

Section: Introduction and State Of The Artmentioning

confidence: 99%

Process Forces Analysis and a New Feed Control Strategy for Drilling of Unidirectional Carbon Fiber Reinforced Plastics (UD-CFRP)

Sauer

Dix

Pütz

2018

JMMP

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Reliable machining of carbon fiber-reinforced plastics (CFRP) is the key for application of these lightweight materials. Due to its anisotropy, CFRP is a very difficult material to machine because of occurring delamination and fiber-pullouts. The tool design is especially crucial to minimize and to avoid these processing errors. In this paper a process analysis for drilling is shown for better understanding of the chip formation. Drilling of unidirectional CFRP enables the investigation of the effect of fiber orientation on the chip formation process. In theory, the amount of cut fibers and the cutting angle to the main cutting edge determine the cutting force. Experimental tests with varied macroscopic drill geometries verify this theory. Based on these detected relationships, the tool loads can be calculated for a successful tool design.

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A review of the effect of hydrothermal aging on the mechanical properties of 2D fiber‐reinforced resin matrix composites

Li,

Feng,

Zhang

et al. 2024

Polymers for Advanced Techs

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Abstract2D fiber reinforced resin matrix composites (2D FRRMC) are widely applied for aerospace, generator blades, and other high‐end equipment manufacturing fields due to their excellent mechanical properties. However, 2D FRRMC will face a variety of complex environments in the service process, and the long‐term complex environment will significantly impact the physical and mechanical properties of 2D FRRMC. It is necessary to understand and analyze the changes of materials during service. A comprehensive review of the research on the effect of hydrothermal aging on the mechanical properties and re‐ drying of 2D FRRMC in recent years was presented in this article, which contains interlaminar shear properties, compression properties, tensile properties, and aging mechanism, etc. Finally, the current challenges and prospects of 2D FRRMC were discussed. These discussions and proposed strategies will enlighten thoughts and offer ways to apply 2D FRRMC in complex environments better, study 2D FRRMC in complex environments, and study the effects of hydrothermal aging on materials in the future.

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Occurrence and propagation of delamination during the machining of carbon fibre reinforced plastics (CFRPs) – An experimental study

Cited by 221 publications

References 17 publications

Mechanistic force modeling for milling of unidirectional carbon fiber reinforced polymer laminates

Mechanistic force modeling for milling of unidirectional carbon fiber reinforced polymer laminates

Process Forces Analysis and a New Feed Control Strategy for Drilling of Unidirectional Carbon Fiber Reinforced Plastics (UD-CFRP)

A review of the effect of hydrothermal aging on the mechanical properties of 2D fiber‐reinforced resin matrix composites

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