Title

Estimating the Statistical Properties of Crack Growth for Small Cracks

Date

1980

Index Abstract

Coming Soon

Photo Quality

Not Needed

Report Number

AFWAL TR 81-4016

Creator

Hovey, P. W.

Gallagher, J. P.

Berens, A. P.

Corporate Author

University of Dayton Research Institute

Extent

26

Identifier

ADA104672

Distribution Classification

1

DTIC Record Exists

No

Distribution Change Authority Correspondence

None

Abstract

A series of statistical studies were conducted on two sets of fatigue crack growth data which were generated under variable amplitude loading from cracks that initiated in 7475-T7351 Aluminum down in the bore of typical aircraft quality prepared holes. The study considered fatigue crack growth (life) behavior and fatigue crack growth rate behavior. Generally, the study showed that small crack growth behavior was similar to that observed for larger cracks and that a stress intensity factor parameter could be used to describe the mean trend of the fatigue crack growth rate behavior via a power law relationship.

Report Availability

Full text available by request

Date Issued

1980-12-01

Provenance

IIT

Type

report

Format

26 pages ; 28 cm.