Influence of Macro Residual Stresses on the Fatigue Behavior of Smooth and Notched Specimens made from a High Strength Steel Institut für Werkstoffkunde I, Universität Karlsruhe (TH)

Format:

Conference/Event

Author/Creator:

Löhe, D., author.

Conference Name:

International Off-Highway & Powerplant Congress (2002-03-19 : Las Vegas, Nevada, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2002

Summary:

In the hard steel investigated the tensile residual stress sensitivity of the fatigue strength approaches its mean stress sensitivity. Hence, fatigue limit and finite fatigue life are strongly reduced with increasing tensile residual stresses. In the range of compressive residual stresses, complex relationships exist which depend on the relationships between residual stress gradient and loading stress gradient. In smooth specimens or components where the residual stress gradient is steeper than the loading stress gradient, cracks initiate below the surface, and the effect of compressive residual stresses on the fatigue limit is small. Contrarily the fatigue strength of notched specimens with a high loading stress gradient is strongly enhanced by high compressive residual stresses with a large penetration depth

Notes:

Vendor supplied data

Publisher Number:

2002-01-1408

Access Restriction:

Restricted for use by site license