During the running-in process, a friction pair experiences drastic evolution in many of its tribological parameters, such as surface roughness, wear rate, and coefficient of friction until steady-state is attained. In this paper, we present a model for predicting the behavior of the running-in process. Specifically, we determine a general relationship between the wear loss and surface roughness during the running-in stage and test the validity of its prediction of wear rate by comparing to available experimental results. We show, by using a dimensional analysis and applying the Buckingham Pi theorem, that there exists a linear relationship between the transient dimensionless wear, the dimensionless initial surface roughness, and dimensionless running-in time.

References

References
1.
Blau
,
P. J.
,
2006
, “
On the Nature of Running-In
,”
Tribol. Int.
,
38
(
11
), pp.
1007
1012
.
2.
Archard
,
J. F.
,
1952
, “
Contact and Rubbing of Flat Surfaces
,”
J. Appl. Phys.
,
23
, pp.
981
988
.
3.
Queener
,
C. A.
,
Smith
,
T. C.
, and
Mitchell
,
W. L.
,
1965
, “
Transient Wear of Machine Parts
,”
Wear
,
8
(
5
), pp.
391
400
.
4.
Levy
,
V.
, and
Jee
,
N.
,
1988
, “
Unlubricated Sliding Wear of Ceramic Materials
,”
Wear
,
121
(
3
), pp.
363
380
.
5.
Wang
,
W.
, and
Scholz
,
C. H.
,
1994
, “
Wear Processes During Frictional Sliding of Rock: A Theoretical and Experimental Study
,”
J. Geophys. Res.: Solid Earth
,
99
(
B4
), pp.
6789
6799
.
6.
Blau
,
P. J.
,
1987
, “
A Model for Run-In and Other Transitions in Sliding Friction
,”
ASME J. Tribol.
,
109
(
3
), pp.
537
544
.
7.
Hu
,
Y. Z.
,
Li
,
N.
, and
Tonder
,
K.
,
1991
, “
A Dynamic System Model for Lubricated Sliding Wear and Running-In
,”
ASME J. Tribol.
,
113
(
3
), pp.
499
505
.
8.
Wang
,
W.
, and
Wong
,
P. L.
,
2000
, “
Wear Volume Determination During Running-In for PEHL Contacts
,”
Tribol. Int.
,
33
(
7
), pp.
501
506
.
9.
Kumar
,
R.
,
Prakash
,
B.
, and
Sethuramiah
,
A.
,
2002
, “
A Systematic Methodology to Characterize the Running-In and Steady-State Wear Processes
,”
Wear
,
252
(5–6), pp.
445
453
.
10.
Akbarzadeh
,
S.
, and
Khonsari
,
M. M.
,
2010
, “
On the Prediction of Running-In Behavior in Mixed-Lubrication Line Contact
,”
ASME J. Tribol.
,
132
(
3
), p.
032102
.
11.
Ghosh
,
A.
, and
Sadeghi
,
F.
,
2015
, “
A Novel Approach to Model Effects of Surface Roughness Parameters on Wear
,”
Wear
,
338
, pp.
73
94
.
12.
Drucker
,
D. C.
,
1976
, “
Elementary Results of Dimensional Analysis for Friction and Wear in Steady-State Sliding
,”
Wear
,
40
(
1
), pp.
129
133
.
13.
Shaw
,
M. C.
,
1977
, “
Dimensional Analysis for Wear Systems
,”
Wear
,
43
(
2
), pp.
263
266
.
14.
Amiri
,
M.
,
Khonsari
,
M. M.
, and
Brahmeshwarkar
,
S.
,
2012
, “
An Application of Dimensional Analysis to Entropy–Wear Relationship
,”
ASME J. Tribol.
,
134
(
1
), p.
011604
.
15.
Buckingham
,
E.
,
1914
, “
On Physically Similar Systems; Illustrations of the Use of Dimensional Equations
,”
Phys. Rev.
,
4
(
4
), pp.
345
376
.
16.
Aghdam
,
A. B.
, and
Khonsari
,
M. M.
,
2011
, “
On the Correlation Between Wear and Entropy in Dry Sliding Contact
,”
Wear
,
270
(
11
), pp.
781
790
.
17.
Aghdam
,
A. B.
, and
Khonsari
,
M. M.
, “
Application of a Thermodynamically Based Wear Estimation Methodology
,”
ASME J. Tribol.
(accepted).
18.
Zhao
,
Y.
,
Maietta
,
D. M.
, and
Chang
,
L.
,
2000
, “
An Asperity Microcontact Model Incorporating the Transition From Elastic Deformation to Fully Plastic Flow
,”
ASME J. Tribol.
,
122
(
1
), pp.
86
93
.
19.
Patir
,
N.
,
1978
, “
A Numerical Procedure for Random Generation of Rough Surfaces
,”
Wear
,
47
(
2
), pp.
263
277
.
20.
Akbarzadeh
,
S.
, and
Khonsari
,
M. M.
,
2010
, “
Effect of Surface Pattern on Stribeck Curve
,”
Tribol. Lett.
,
37
(
2
), pp.
477
486
.
21.
Pawar
,
G.
,
Pawlus
,
P.
,
Etsion
,
I.
, and
Raeymaekers
,
B.
,
2013
, “
The Effect of Determining Topography Parameters on Analyzing Elastic Contact Between Isotropic Rough Surfaces
,”
ASME J. Tribol.
,
135
(
1
), p.
011401
.
22.
Greenwood
,
J. A.
, and
Williamson
,
J. B. P.
,
1966
, “
Contact of Nominally Flat Surfaces
,”
Proc. R. Soc. London A
,
295
(
1442
), pp.
300
319
.
23.
Rabinowicz
,
E.
,
1995
,
Friction and Wear of Materials
,
Wiley
,
New York
.
24.
Mehdizadeh
,
M.
,
Akbarzadeh
,
S.
,
Shams
,
K.
, and
Khonsari
,
M. M.
,
2015
, “
Experimental Investigation on the Effect of Operating Conditions on the Running-In Behavior of Lubricated Elliptical Contacts
,”
Tribol. Lett.
,
59
(
1
), pp.
1
13
.
You do not currently have access to this content.