Accession Number:

AD0780120

Title:

Cyclic Inelastic Deformation and Fatigue Life Behaviour of Notched Components.

Descriptive Note:

Interim rept.,

Corporate Author:

WATERLOO UNIV (ONTARIO) DEPT OF CIVIL ENGINEERING

Personal Author(s):

• Leis,B. N.
• Topper,T. H.
• Gowda,C. V. B.

Report Date:

1974-04-01

Pagination or Media Count:

41.0

Abstract:

Cyclic inelastic deformation response and fatigue notch factor are presented and discussed for two metals of contrasting stress-strain behaviour an aluminum alloy 2024-T351 and a mild steel SAE 1015. Thin circular or elliptical notched plates fabricated from these metals were subjected to cyclic straining in a servo-controlled testing machine. Results of these tests are discussed in terms of cyclic stress and strain concentration factors and related to notch plate deformation through a parameter derived fron Neubers rule. The results indicate that the deformation analysis employed, rather than a material size effect is responsible for values of K sub f less that K sub t. Author

Descriptors:

• *Fatigue(Mechanics)
• *Plastic deformation
• Notch sensitivity
• Aluminum alloys
• Steel
• Stress strain relations
• Cycles
• Canada

Subject Categories:

• Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE