Abstract

Advanced continuous fiber-reinforced ceramic composite (CFCC) materials have been machined with abrasive water jet (AWJ) drilling and cutting processes. Cutting forces, surface microstructure, and retained tensile behaviors were evaluated using dynamometry, surface profilometry, scanning electron microscopy, and tensile testing, respectively. The AWJ surface characteristics, i.e., roughness and the micromechanisms of material removal of CFCCs, were compared with those of a conventional diamond saw cut surface. Material removal mechanisms for AWJ cutting of CFCC consist of a combination of bending, shearing, micromachining, and erosion. The micromechanisms associated with AWJ hole drilling, or piercing on the other hand, are microfracture of fibers and matrix, delamination, and fragmentation of fiber bundles. The tensile mechanical behavior is negligibly different between the AWJ machined and diamond grit ground CFCC materials.

Issue Section:
Research Papers
Keywords:
continuous-fiber ceramic composites, abrasive water jet, machining, edge finishing, fiber direction, surface roughness, bending fracture, erosion, delamination

References

1.
Sheppard
,
L. M.
, “
Machining of Advanced Ceramics
,”
Advanced Materials & Processes
, Vol.
132
, No.
6
,
1987
, pp.
40
-
48
.
2.
Karnitz
,
M. A.
 and
Craig
,
D. A.
, “
Continuous Fiber Ceramic Composite Program
,”
Ceramic Bulletin
 0002-7812, Vol.
70
, No.
3
,
1991
, pp.
430
-
435
.
3.
Jahanmir
,
S.
,
Ramulu
,
M.
, and
Koshy
,
P.
, Eds.,
Machining of Ceramics and Composites
,
Marcel and Dekkar
,
New York
,
1998
.
4.
Snoeys
,
R.
,
Staelens
,
F.
, and
Dekeysev
,
W.
, “
Current Trends in Non-conventional Materials Removal Processes
,”
CIRP Annals
 0007-8506, Vol.
35
, No.
2
,
1986
, pp.
467
-
480
.
Google Scholar
Crossref
Search ADS
 
5.
Wang
,
D. H.
,
Ramulu
,
M.
, and
Arola
,
D.
, “
Orthogonal Cutting Mechanisms of G/E Composite: Part I
,”
International Journal of Machine Tools and Manufacture
 0890-6955 https://doi.org/10.1016/0890-6955(95)00014-O, Vol.
35
, No.
6
,
1995
, pp.
1623
-
1638
.
6.
Colligan
,
K.
 and
Ramulu
,
M.
, “
The Effect of Edge Trimming on Composite Surface Plies
,”
Manufacturing Review
 0896-1611, Vol.
5
, No.
4
,
1992
, pp.
274
-
283
.
7.
Ramulu
,
M.
 and
Arola
,
D.
, “
Water Jet and Abrasive Waterjet Cutting of Unidirectional Graphite/Epoxy Composite
,”
Composites
 0010-4361 https://doi.org/10.1016/0010-4361(93)90040-F, Vol.
24
, No.
4
,
1993
, pp.
299
-
308
.
Google Scholar
Crossref
Search ADS
 
8.
Hamatani
,
G.
 and
Ramulu
,
M.
, “
Machinability of High Temperature Composite by Abrasive Waterjet
,”
Journal of Engineering Materials and Technology
 0094-4289, Vol.
112
,
1990
, pp.
381
-
386
.
Google Scholar
Crossref
Search ADS
 
9.
Hashish
,
M.
, “
Machining of Advanced Composite with Abrasive Waterjet
,”
Manufacturing Review
 0896-1611, Vol.
2
, No.
2
,
1989
, pp.
142
-
150
.
10.
Ramulu
,
M.
, “
EDM Sinker Cutting of TiB2-SiC Composite
,”
Advanced Ceramic Materials
 0883-5551, Vol.
3
, No.
4
,
1988
, pp.
324
-
327
.
Google Scholar
Crossref
Search ADS
 
11.
Ramulu
,
M.
 and
Arola
,
D.
, “
The Influence of Abrasive Waterjet Cutting Conditions on the Surface Quality of G/E Laminates
,”
International Journal of Machine Tools and Manufacture
 0890-6955, Vol.
34
, No.
3
,
1994
, pp.
295
-
313
.
Google Scholar
Crossref
Search ADS
 
12.
Gonczy
,
S. T.
,
Lara-Curzio
,
E.
,
Riester
,
L.
,
Butler
,
E.
,
Danforth
,
S.
, and
Cannon
,
W.
, “
Low Cost Machining of Ceramic-Fiber Reinforced Ceramic Composites (2-D) and the Effects on Tensile Properties
,”
Processing, Design, and Performance of Composite Materials, MD-Vol. 52
,
American Society of Mechanical Engineers
,
New York, NY
,
1994
, pp.
217
-
238
.
13.
Ramulu
,
M.
,
Prasad
,
N.
,
Malakondaiah
,
G.
, and
Guo
,
Z.
, “
Secondary Processing Effects and Damage Mechanisms in Continuous-fiber Ceramic Composites
,”
Thermal and Mechanical Test Methods and Behaviour of Continuous Fibre Ceramic Composites
, ASTM STP 1309,
American Society for Testing and Materials
,
West Conshohocken
,
1997
, pp.
274
-
288
.
14.
Fehlmann
,
K. R.
 and
Jenkins
,
M. G.
, “
Effects of Material Removal Process on the High-Temperature Performance of an Oxide-Matrix CFCC
,”
Ceramic Engineering and Science Proceedings
 0196-6219, Vol.
18
, No.
3
,
1997
, pp.
661
-
669
.
15.
Piccola
,
J. P.
, Jr., “
Effects of Test Parameters on Tensile Mechanical Behavior of a Continuous Fiber Ceramic Composite (CFCC)
,” Master of Science thesis,
University of Washington
,
1994
.
16.
Piccola
,
J. P.
, Jr.,
Jenkins
,
M. G.
, and
Lara-Curzio
,
E.
, “
Influence of Test Mode, Test Rate, Specimen Geometry and Bending on Tensile Mechanical Behaviour of a CFCC
,”
Thermal and Mechanical Test Methods and Behaviour of Continuous Fibre Ceramic Composites
, ASTM STP 1309,
American Society for Testing and Materials
,
West Conshohocken
,
1997
, pp.
3
-
15
.
17.
Guo
,
Z.
, “
Experimental and Numerical Analysis of Abrasive Waterjet Drilling of Brittle Materials
,” Ph.D. dissertation,
University of Washington
,
1998
.
18.
Momber
,
A. W.
 and
Kovacevic
,
R.
, “
Calculation of Exit Jet Energy in Abrasive Water Jet Cutting
,”
New Product Introduction Measurement and Inspection of Products and Processes
, PED—Vol.
68
,
American Society of Mechanical Engineers
,
New York
,
1994
, pp.
361
-
366
.
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