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ASTM Selected Technical Papers
Thermal Fatigue of Materials and Components
By
DA Spera
DA Spera
1
NASA Lewis Research Center
,
editor
Search for other works by this author on:
DF Mowbray
DF Mowbray
2
Mechanics of Materials Unit, Materials and Processes Laboratory, General Electric Company
,
Schenectady, N.Y.
;
symposium cochairman and also coeditor of this publication
.
Search for other works by this author on:
ISBN-10:
0-8031-0586-X
ISBN:
978-0-8031-0586-7
No. of Pages:
270
Publisher:
ASTM International
Publication date:
1976

This paper considers shape changes which develop progressively in hourglass specimens subjected to fully reversed cyclic plastic strain applied in a variety of mechanical and thermal waveforms. While the strain at the minimum diameter is controlled, off-center locations subjected to cyclic plastic strain undergo ratcheting. Two major off-center shape changes have been observed: barreling and necking. The paper discusses the reasons for these changes.

1.
Coffin
,
L. F.
,
Transactions, American Society for Mechanical Engineers
,
Journal of Basic Engineering
 0021-9223, D, Vol.
82
,
1960
, p. 671.
2.
Sheffler
,
K. D.
, “
Vacuum Thermal-Mechanical Fatigue Testing of Two Iron Base Alloys High Temperature Alloys
,” NASA-CR-134524,
National Aeronautics and Space Administration, Lewis Research Center
,
Cleveland, Ohio
,
01
1974
.
3.
Raymond
,
M. H.
and
Coffin
,
L. F.
,
Acta Metallurgica
 0001-6160, Vol.
11
,
1963
, pp. 801-807.
4.
Conway
,
J. B.
,
Stentz
,
R. H.
, and
Berling
,
J. T.
, “
High Temperature, Low-Cycle Fatigue of Copper-Base Alloys in Argon
,” NASA-CR-121260,
National Aeronautics and Space Administration, Lewis Research Center
,
Cleveland, Ohio
,
08
1973
.
5.
Unpublished General Electric Co. research.
6.
Coffin
,
L. F.
,
Transactions
,
American Society of Mechanical Engineers
, Vol.
76
,
1954
, pp. 931-950.
7.
Coffin
,
L. F.
,
Transactions
,
American Society of Mechanical Engineers
, Vol.
79
,
1957
, p. 1637.
8.
Carden
,
A. E.
, “
Thermal Fatigue—An Analysis of the Experimental Method
,” ORNL TM-405,
Oak Ridge National Laboratory
,
Oak Ridge, Tenn.
,
1963
.
9.
Thomas
,
W. S.
, “
An Investigation of the Stages of Deformation of a Thin-Wall Tube Caused by Cyclic Thermal Stress
,” M.S. Thesis,
University of Alabama
, University, Ala.,
08
1961
.
10.
Hernandez
,
J. A.
, “
An Analysis of the Thermal Fatigue Characteristics of Inconel
,” M. S. Thesis,
University of Alabama
, University, Ala.,
1964
.
11.
Sheffler
,
K. D.
and
Doble
G. S.
in
Fatigue at Elevated Temperature
, ASTM 520,
American Society for Testing and Materials
,
1973
, pp. 491-499.
12.
McClintock
,
F. A.
in
Fracture of Solids
,
Interscience Publishers
,
New York
,
1963
, pp. 65-102.
13.
Skelton
,
R. P.
,
Materials Science and Engineering
, Vol.
19
,
1975
, pp. 25-30.
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