A methodology is presented for the preparation of a competing modes fatigue design curve. Examples using extruded and isothermally forged powder metallurgy René 95 are presented. Monte Carlo simulation results are given to identify sample size requirements appropriate for the generation of reliable design curves.

1.
Cashman
,
G. T.
, “
A Mathematical Model for Competing Failure Modes in Strain Cycle Fatigue
,”
ASME J. Eng. Mater. Technol.
0094-4289, to be published.
2.
Bain
,
K. R.
, 2000, private communication.
3.
Domas
,
P. A.
, 1999, private communication.
4.
Cashman
,
G. T.
, 2000, “
A Model for Competing Failure Modes in Elevated Temperature Strain Cycle Fatigue
,” Ph.D. dissertation, University of Dayton, Dayton, OH, pp.
112
116
.
5.
Chang
,
D. R.
,
Krueger
,
D. D.
, and
Sprague
,
R. A.
, 1984, “
Superalloy Powder Processing, Properties and Turbine Disk Applications
Superalloys 1984
,
Proceedings of the 5th International Symposium on Superalloys
, AIME, Seven Springs, PA, pp.
245
273
.
6.
Chang
,
W. H.
,
Green
,
H. M
, and
Sprague
,
R. A.
, 1982, “
Defect Analysis of P/M Su1peralloys
Rapid Solidification Processing Principles and Technologies III
, Proceedings of the Third Conference on Rapid Solidification Processing, National Bureau of Standards, Washington, DC, pp.
500
509
.
7.
Harrison
,
G. P.
,
Tranter
,
P. H.
, and
Grabowski
,
L.
, 1993, “
Defects and Their Effects on the Integrity of Nickel Based Aeroengine Discs
” AGARD Rep. No. 790, pp.
9.1
9.16
.
8.
Cashman
,
G. T.
, 2000, “
A Model for Competing Failure Modes in Elevated Temperature Strain Cycle Fatigue
,” Ph.D. dissertation, University of Dayton, Dayton, OH, p.
18
.
9.
ASTM Standard E-739, 1991, “
Standard Practice for Statistical Analysis of Linear of Linearized Stress-Life (S-N) and Strain-Life (ε-N) Fatigue Data
,”
ASTM Book of Standards
, ASTM, West Conshohocken, PA, Vol.
3.01
, pp.
702
708
.
10.
Metallic Materials Properties Development and Standardization (MMPDS)
, 2003, DOT/FAAAR-MMPDS-01, Office of Aviation Research, Washington, D.C.
11.
Nelson
,
W.
, 1992, private communication.
12.
Nelson
,
W.
, 1982,
Applied Life Data Analysis
,
Wiley
,
New York
, pp.
190
192
.
13.
Berens
,
A. P.
, 1988, “
NDE Reliability Analysis
ASM Metals Handbook, Nondestructive Evaluation and Quality Control
, 9th ed., ASTM, Metals Park, OH, pp.
689
701
.
14.
Cheng
,
R. C. H.
, and
Iles
,
T. C.
, 1983, “
Confidence Bands for Cumulative Distribution Functions of Continuous Random Variables
Technometrics
0040-1706,
25
, pp.
77
86
.
15.
Cheng
,
R. C. H.
, and
Iles
,
T. C.
, 1988, “
One-sided Confidence Bands for Cumulative Distribution Functions
,”
Technometrics
0040-1706,
32
, pp.
155
159
.
16.
Owen
,
D. B.
, 1968, “
A Survey of Properties and Applications of the Non-central t Distribution
,”
Technometrics
0040-1706,
10
, pp.
445
472
.
17.
Draper
,
N. S.
, and
Smith
,
H.
, 1966,
Applied Regression Analysis
,
Wiley
,
New York
, pp.
16
17
.
You do not currently have access to this content.