alloya: Fatigue crack growth in an unknown metallic alloy.

In Auburngrads/SMRD: Statistical Methods For Reliability Data

Description

Twenty-one specimens of an unknown alloy were subjected to the same cyclic load profile. Prior to testing, an initial crack (length = 0.9 in) was cut into each specimen to serve as a crack nucleation site. After each increment of 10,000 fatigue cycles the length of the crack was recorded. A specimen was considered to have failed when the crack length exceeded 1.6 inches, otherwise the test concluded after 1.2 million cycles.

Format

A data.frame with 262 rows and 3 variables

[, 1]	inches	Crack length observed at megacycles	Numeric
[, 2]	specimen	Test specimen designator	Categoric
[, 3]	megacycles	Number of fatigue cycles (in millions) when length was inspected	Numeric

Source

Hudak, S.J., Saxena, A., Bucci, R. J., and Malcom, R .C. (1978), Development of standard methods of testing and analyzing fatigure crack growth rate data, Technical Report AFML-TR-78-40, Westinghouse R & D Center, Westinghouse Electric Corporation, Pittsburgh, PA.

Bogdanoff, J. L. and Kozin, F. (1985), Probablistic Models of Cumulative Damage, New York, NY; John Wiley & Sons.

Auburngrads/SMRD documentation built on Sept. 14, 2020, 2:21 a.m.