Title

The Growth of Corner Cracks Under the Conjoint Action of High and Low Cycle Failure

Creator

Powell, B. E.

Henderson, I.

Hall, R. F.

Date

1988

Abstract

Fatigue crack propagation rates have been measured for Ti-6A1-4V and Ti-5331S aeroengine disc materials using compact tension and corner notched tensile test-pieces. The loadings used simulate both the start-stop operations of aeroengines which lead to low cycle fatigue and the in-flight vibrations which may cause high cycle fatigue. It is suggested that the different fatigue crack growth behavior of Ti-5331S, relative to that of Ti-6A1-4V, arises largely from the greater proportion of crack closure and short crack growth occurring in this alloy.

Date Issued

1988-02

Extent

80

Corporate Author

Portsmouth Polytechnic

Laboratory

Materials Laboratory

Report Number

AFWAL-TR-87-4130

Contract

F49620-85-C-0116DEF

Distribution Conflict

No

Access Rights

Approved for public release; distribution umlimited

Photo Quality

Incomplete

Distribution Classification

1

Report Availability

Full text available by request

Identifier

ADA190510

Provenance

IIT

Type

report

Format

80 pages ; 28 cm.