Finite element analysis of single grit rotating scratch on brittle materials was conducted using an “elastic-plastic-cracking” (EPC) model. The brittle material removal mechanism was modeled based on a critical crack-opening displacement criterion. It was found that the tangential and normal force profiles as well as the damage morphology observed in scratch experiments were fully captured by the EPC model. The results revealed that the induced damage zone size increases linearly with a brittleness parameter EY/σf21/3 as well as the maximum depth of cut.

Issue Section:
Brief Notes
Keywords:
brittleness, grinding, crack-edge stress field analysis, finite element analysis, elastoplasticity, modelling
Topics:
Brittleness, Damage, Finite element analysis, Fracture (Materials), Fracture (Process)
1.
Li
,
K.
, and
Liao
,
T. W.
,
1996
, “
Surface/Subsurface Damage and the Fracture Strength of Ground Ceramics
,”
J. Mater. Process. Technol.
,
57
, pp.
207
–
220
.
2.
Hessert
,
R.
,
Eigenmann
,
B.
,
Vo¨hringer
,
O.
, and
Lo¨he
,
D.
,
1997
, “
Fracture Mechanical Evaluation of the Effects of Grinding Residual Stresses on Bending Strength of Ceramics
,”
Mater. Sci. Eng.
,
A234-23
, pp.
1126
–
1129
.
3.
Lee
,
S. K.
,
Tandon
,
R.
,
Readey
,
M. J.
, and
Lawn
,
B. R.
,
2000
, “
Scratch Damage in Zirconia Ceramics
,”
J. Am. Ceram. Soc.
,
83
(
6
), pp.
1428
–
1432
.
4.
Lawn
,
B. R.
,
Evans
,
A. G.
, and
Marshall
,
D. B.
,
1980
, “
Elastic/Plastic Indentation Damage in Ceramics: The Median/Radial Crack System
,”
J. Am. Ceram. Soc.
,
63
, pp.
574
–
581
.
5.
Chiang
,
S. S.
,
Marshall
,
D. B.
, and
Evans
,
A. G.
,
1982
, “
The Response of Solids to Elastic/Plastic Indentation. I. Stresses and Residual Stresses
,”
J. Appl. Phys.
,
53
(
1
), pp.
298
–
311
.
6.
Malkin
,
S.
, and
Hwang
,
T. W.
,
1996
, “
Grinding Mechanisms for Ceramics
,”
CIRP Ann.
,
45
(
2
), pp.
569
–
580
.
7.
Ahn
,
Y.
,
Farris
,
T. N.
,
Chandrasekar
,
S.
,
1998
, “
Sliding Microindentation Fracture of Brittle Materials: Role of Elastic Stress Fields
,”
Mech. Mater.
,
29
, pp.
143
–
152
.
8.
Loukas, J. E., 2000, “Investigation of Material Removal Mechanisms during Single Grit Scratching on Brittle Materials,” Ph.D. dissertation, Michigan Technological University, Houghton, MI.
9.
Subhash
,
G.
,
Loukus
,
J. E.
, and
Pandit
,
S. M.
,
2002
, “
Application of Data Dependent Systems Approach for Evaluation of Fracture Modes During a Single-Grit Scratching
,”
Mech. Mater.
,
34
(
1
), pp.
25
–
42
.
10.
Zhang
,
W.
, and
Subhash
,
G.
,
2001
, “
An Elastic-Plastic-Cracking Model for Finite Element Analysis of Indentation Cracking in Brittle Materials
,”
Int. J. Solids Struct.
,
38
(
34–35
), pp.
5893
–
5913
.
11.
Zhang, W., 2001, “Finite Element Analysis of Induced Damage Due to Indentation and Scratching on Brittle Materials,” Ph.D. dissertation, Michigan Technological University, Houghton, MI.
12.
Warnecke
,
G.
, and
Rosenberger
,
U.
,
1995
, “
Basics of Process Parameter Selections in Grinding of Advanced Ceramics
,”
CIRP Ann.
,
44
(
1
), pp.
283
–
286
.
Copyright © 2003
 by ASME
You do not currently have access to this content.