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

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...

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Bibliographic Details
Published inJournal of Manufacturing and Materials Processing Vol. 2; no. 3; p. 46
Main Authors Sauer, Konstantin, Dix, Martin, Putz, Matthias
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2018
Subjects
Anisotropy
Bending stresses
Carbon fiber reinforced plastics
Carbon fiber reinforcement
Carbon fibers
CFRP
Chip formation
Composite materials
Cutting force
Cutting parameters
Drilling
fiber cutting angle
Fiber orientation
Investigations
Machining
Orientation effects
Plastics
Polymers
Process controls
Reinforced plastics
Researchers
tool design
Germany
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Summary: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.
ISSN:2504-4494
2504-4494
DOI:10.3390/jmmp2030046