An experimental study has been conducted to study the crack growth phenomenon that occurs while drilling fiber-reinforced composite materials (FRCM), specifically unidirectional (UD) carbon fiber/epoxy resin. It uses an experimental setup that exploits the technology of video to understand the complete crack growth phenomenon as the drill emerges from the exit side of the workpiece. Significant damage mechanisms are observed and defined, and correlations between the average exit drill forces and the crack tip position are shown. Instantaneous forces as they vary along the orientation of the cutting edges are identified in terms of their contribution to the crack propagation.
Issue Section:
Technical Papers
1.
Ko¨nig
W.
Graß
P.
1989
, “Quality Definition and Assessment in Drilling of Fibre Reinforced Thermosets
,” Annals of the CIRP
, Vol. 38
, No. 1
, pp. 119
–124
.2.
Colligan, K., and Ramulu, M., 1992, “An Experimental Investigation into Pitting of Hole Surfaces When Drilling Graphite/Epoxy Materials,” Symposium on Processing, Fabrication and Manufacturing of Composite Materials, ASME, Vol. 35, pp. 11–25.
3.
Friend, C. A., Clyne, R. W., and Valentine, G. G., 1973, “Machining Graphite Composite Materials,” Composite Materials in Engineering Design, pp. 217–224.
4.
Caprino
G.
Tagliaferri
V.
1988
, “Maximum Cutting Speed in Laser Cutting of Fiber Reinforced Plastics
,” Int. J. Mach. Tools Manufact.
, Vol. 28
, No. 4
, pp. 389
–398
.5.
Hashish
M.
1989
, “Machining of Advanced Composites with Abrasive-Water Jets
,” Manufacturing Review
, Vol. 2
, No. 2
, June, pp. 142
–160
.6.
Komanduri
R.
Zhang
B.
Vissa
C. M.
1991
, “Machining of Fiber Reinforced Composites
,” Processing and Manufacturing of Composite Materials, ASME
, Vol. 27
, pp. 1
–36
.7.
Pengra, J. J., and Wood, R. E., 1980, “The Influence of Hole Quality on Graphite Epoxy Composite Laminates,” AIAA, 80-0777, pp. 687–693.
8.
Wong, T. L., Wu, S. M., and Croy, G. M., 1982, “An Analysis of Delamination in Drilling Composite Materials,” 14th National SAMPE Technical Conference, October 12–14, pp. 471–483.
9.
Ko¨nig
W.
Wulf
Ch.
Graß
P.
Willerscheid
H.
1985
, “Machining of Fibre Reinforced Plastics
,” Annals of the CIRP
, Vol. 34
, No. 2
, pp. 537
–548
.10.
Ho-Cheng, H., and Dharan, C. K. H., 1990, “Delamination During Drilling in Composite Laminates,” ASME Journal of Engineering for Industry, August, pp. 39–47.
11.
Jain, S., and Yang, D. C. H., 1991, “Effects of Feedrate and Chisel Edge on Delamination in Composites Drilling,” Symposium on Processing and Manufacturing of Composite Materials, ASME, Vol. 27, pp. 37–51.
12.
Broek, D., 1986, Elementary Engineering Fracture Mechanics, Martinus Nijhoff Publishers, pp. 130–136.
13.
Petrof, R. C., 1986, “On the Dynamics of Drilling Glass Reinforced Plastic with Different Drill Point Geometries,” SME Technical Paper.
This content is only available via PDF.
Copyright © 1996
by The American Society of Mechanical Engineers
You do not currently have access to this content.
