Modeling of Delamination During Milling of Unidirectional CFRP

Hintze, Wolfgang; Hartmann, Dirk

doi:10.1016/j.procir.2013.06.131

Cited by 91 publications

(35 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Pecat et al [19] evaluated the influence of milling parameters on the surface integrity of CFRP and found that the cutting mechanism is different for each fiber orientation. Hintze et al [20] studied the delamination during milling of unidirectional CFRP. They reported that the active force lead to initial damage of the laminate which can cause fibers to deflect instead of being cutoff.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of cutting force and cutting temperature in milling carbon fiber-reinforced polymer composites

Wang

Sun

et al. 2015

Int J Adv Manuf Technol

101

View full text Add to dashboard Cite

The cutting temperature and cutting force are some of the main factors that influence the surface quality of carbon fiber-reinforced polymer (CFRP). However, few investigations have been done on cutting temperature because it is difficult to capture the dynamic response of the temperature measurement system. Degradation of resin will occur within the machined surface or surface layer as the temperature exceeds the glass-transition temperature of the resin matrix. In this research, the relationship between cutting parameters and cutting temperature, cutting force were developed by response surface methodology (RSM). The experiments were designed using the tool-workpiece thermocouple technique. Taking into consideration the effect of the glass-transition temperature, the influence of cutting force and cutting temperature on surface quality of CFRP was analyzed. Analysis results showed that Spindle speed is the key parameter which influenced the cutting temperature while feed rate is the key parameter which influenced the cutting force in milling of CFRP. When the cutting temperature exceeds the glass-transition temperature (T g ), the matrix cannot provide enough support to the fibers, and the machining quality of composite material is poor.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of cutting force and cutting temperature in milling carbon fiber-reinforced polymer composites

Wang

Sun

et al. 2015

Int J Adv Manuf Technol

101

View full text Add to dashboard Cite

show abstract

“…During milling, the surface fibers are bent by the milling force. Due to a lack of external support, the fibers are debonded under the milling force [19,20]. The stiffness of the carbon fiber is decreased, and the carbon fibers are pushed to the outside, so that they cannot be cut off by the mill over time.…”

Section: Methodsmentioning

confidence: 99%

“…The deformation of the fiber layer will gradually recover after cutting; however, the delamination defect is permanent as the matrix loses its adhesive capacity. Interlayer delamination defects may occur in any fiber layer of the milling fracture [19,20]. If they occur on the surface, there will be tear and burrs.…”

Section: Introductionmentioning

confidence: 99%

“…Calzada et al [11] developed a microstructure-based finite element model for CFRP machining to describe the fiber failure mode in the chip formation process. Hintze et al [19] proposed a delamination model for milling unidirectional CFRPs. Maegawa et al [27,28] studied the effects of fiber orientation direction on tool wear in the milling of CFRPs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface Quality of Staggered PCD End Mill in Milling of Carbon Fiber Reinforced Plastics

et al. 2017

View full text Add to dashboard Cite

Machined surface quality determines the reliability, wear resistance and service life of carbon fiber reinforced plastic (CFRP) workpieces. In this work, the formation mechanism of the surface topography and the machining defects of CFRPs are proposed, and the influence of milling parameters and fiber cutting angles on the surface quality of CFRPs is obtained, which can provide a reference for extended tool life and good surface quality. Trimming and slot milling tests of unidirectional CFRP laminates are performed. The surface roughness of the machined surface is measured, and the influence of milling parameters on the surface roughness is analyzed. A regression model for the surface roughness of CFRP milling is established. A significance test of the regression model is conducted. The machined surface topography of milling CFRP unidirectional laminates with different fiber orientations is analyzed, and the effect of fiber cutting angle on the surface topography of the machined surface is presented by using a digital super depth-of-field microscope and scanning electron microscope (SEM). To study the influence of fiber cutting angle on machining defects, the machined topography under different fiber orientations is analyzed. The slot milling defects and their formation mechanism under different fiber cutting angles are investigated.

show abstract

“…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

View full text Add to dashboard Cite

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.

show abstract

Modeling of Delamination During Milling of Unidirectional CFRP

Cited by 91 publications

References 10 publications

Evaluation of cutting force and cutting temperature in milling carbon fiber-reinforced polymer composites

Evaluation of cutting force and cutting temperature in milling carbon fiber-reinforced polymer composites

Surface Quality of Staggered PCD End Mill in Milling of Carbon Fiber Reinforced Plastics

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

Contact Info

Product

Resources

About