Skip to Main Content
Skip Nav Destination
ASTM Selected Technical Papers
Multiaxial Fatigue
By
KJ Miller
KJ Miller
1Department of Mechanical Engineering,
University of Sheffield
,
Sheffield,
U.K.
symposium chairmen and editors
.
Search for other works by this author on:
MW Brown
MW Brown
2Department of Mechanical Engineering,
University of Sheffield
,
Sheffield,
U.K.
symposium chairmen and editors
.
Search for other works by this author on:
ISBN-10:
0-8031-0444-8
ISBN:
978-0-8031-0444-0
No. of Pages:
751
Publisher:
ASTM International
Publication date:
1985

Constant amplitude torsional fatigue tests have been performed on smooth specimens of quenched and tempered steel at two strength levels. Both unidirectional and fully reversed tests have been performed. It was found that there was no detectable effect of mean strain upon fatigue life of either strength level material, both at short and at long lives. Observations on microcrack behavior during the tests has demonstrated that initial crack growth always occurs on a shear plane, even if subsequent propagation is on a tensile Mode I plane at 45°.

As in the uniaxial situation, short lives are dominated by microcrack growth. However, in torsion crack growth dominates over an extended range of life, and, in addition, surface crack lengths are longer than uniaxial at similar fractions of life. It is concluded that whereas crack initiation on shear planes is relatively easy in torsion, the Stage I/Stage II transition, which occurs in tension at crack lengths of one or two grains, is extremely difficult in torsion.

1.
Watson
,
P.
and
Hill
,
S. J.
in
Design of Fatigue and Fracture Resistant Structures
, ASTM STP 761,
American Society for Testing and Materials
,
Philadelphia
,
1982
, pp. 5-27.
2.
Wetzel
,
R. M.
, Ed., “
Fatigue Under Complex Loading: Analysis and Experiments
,”
Society of Automotive Engineers
,
Warrendale, PA
,
1977
,
Advances in Engineering
, Vol.
6
.
3.
Morrow
,
JoDean
and
Socie
,
D. F.
in
Materials, Experimentation and Design in Fatigue
,
Sherratt
,
F.
and
Sturgeon
,
J. B.
, Eds.,
IPC Science and Technology Press Limited
,
Guildford, England
,
1981
, pp. 3-21.
4.
Brown
,
M. W.
and
Miller
,
K. J.
,
Proceedings
,
The Institution of Mechanical Engineers
,
London
, Vol.
187
, No.
65/73
,
1973
, pp. 745-755.
5.
Krempl
,
E.
in
The Influence of State of Stress on Low-Cycle Fatigue of Structural Materials: A Literature Survey and Interpretive Report
, ASTM STP 549,
American Society for Testing and Materials
,
Philadelphia
,
1974
, pp. 1-46.
6.
Halford
,
G. R.
and
Morrow
,
JoDean
,
Proceedings
, Vol.
62
,
American Society for Testing and Materials
,
Philadelphia
,
1962
, pp. 695-707.
7.
Miller
,
K. J.
and
Chandler
,
D. C.
,
Proceedings
,
The Institution of Mechanical Engineers
,
London
, Vol.
184
, Part 1, No.
25
, 1969–1970, pp. 433-448.
8.
MacKenzie
,
C. T.
,
Burns
,
D. J.
, and
Benham
,
P. P.
,
Proceedings
,
Institution of Mechanical Engineers
,
London
, Vol.
180
, Part 131, 1965–1966, pp. 414-423.
9.
Brown
,
M. W.
and
Miller
,
K. J.
in
Low-Cycle Fatigue and Total Life Prediction
, ASTM STP 770,
American Society for Testing and Materials
,
Philadelphia
, to be published.
10.
Frost
,
N. E.
,
Marsh
,
K. J.
and
Pook
,
L. P.
,
Metal Fatigue
,
Clarendon Press
,
Oxford, U.K.
,
1974
.
11.
Kikukawa
,
M.
,
Ohji
,
K.
,
Kotani
,
S.
, and
Yokoi
,
T.
,
Bulletin
,
Japan Society of Mechanical Engineers
, Vol.
15
,
1972
, pp. 889-898.
12.
Sines
,
G.
and
Ohgi
,
G.
,
Transactions
, American Society of Mechanical Engineers,
Journal of Engineering Materials and Technology
 0094-4289, Vol.
103
,
1981
, pp. 82-90.
13.
Yokobori
,
T.
,
Yamanouchi
,
H.
, and
Yamamoto
,
S.
,
International Journal of Fracture Mechanics
, Vol.
1
,
1965
, pp. 3-13.
14.
Watson
,
P.
and
Topper
,
T. H.
,
Experimental Mechanics
,
Society for Experimental Stress Analysis
,
1972
, pp. 11-17.
15.
Manual on Design and Manufacture of Torsion Bar Springs
, SAE J796a.
Society of Automotive Engineers
,
Warrendale, PA
,
1966
.
16.
Landgraf
,
R. W.
in
Fatigue and Microstructure
,
American Society for Metals
,
Metal Park, Ohio
,
1979
, pp. 439-466.
17.
Mitchell
,
M. R.
in
Fatigue and Microstructures
,
American Society for Metals
,
Metals Park, Ohio
,
1979
, pp. 385-437.
18.
Dowling
,
N. E.
in
Cyclic Stress-Strain and Plastic Deformation Aspects of Fatigue Crack Growth
, ASTM STP 637,
American Society for Testing and Materials
,
Philadelphia
,
1977
, pp. 97-121.
19.
Forsyth
,
P. J. E.
,
Cranfield Symposium
,
09
1961
.
20.
Pook
,
L. P.
in
Fracture and Fatigue
,
Radon
,
J. C.
, Ed.,
Permagon
,
Oxford, U.K.
,
1980
, pp. 143-153.
21.
Hurd
,
N. J.
and
Irving
,
P. E.
in
Design of Fatigue and Fracture Resistant Structures
, ASTM STP 761,
Abelkis
,
P. R.
and
Hudson
,
C. M.
Eds.,
American Society for Testing and Materials
,
Philadelphia
,
1982
, pp. 212-233.
22.
Smith
,
K. N.
,
Watson
,
P.
, and
Topper
,
T. H.
,
Journal of Materials
 0022-2453, Vol.
5
, No.
4
,
1970
, pp. 767-778.
This content is only available via PDF.
You do not currently have access to this chapter.
Close Modal

or Create an Account

Close Modal
Close Modal