Can I read From a Local Stress Approach to Fracture Mechanics: a Comprehensive Evaluation of the Fatigue Strength of Welded Joints on EtoBox?

From a Local Stress Approach to Fracture Mechanics: a Comprehensive Evaluation of the Fatigue Strength of Welded Joints by B. Atzori; P. Lazzarin; R. Tovo is a Engineering article available to read on EtoBox.

What is From a Local Stress Approach to Fracture Mechanics: a Comprehensive Evaluation of the Fatigue Strength of Welded Joints about?

This paper investigates the possibility of unifying different criteria concerned with the fatigue strength of welded joints. In particular, it compares estimates based on local stress fields due to geometry (evaluated without any crack‐like defect) and residual life predictions in the presence of a crack, according to LEFM. Fatigue strength results already reported in the literature for transverse non‐load‐carrying fillet welds are used as an experimental database. Nominal stress ranges were largely scattered, due to large variations of joint geometrical parameters. The scatter band greatly reduces as soon as a 0.3‐mm virtual crack is introduced at the weld toe, and the behaviour of the joints is given in terms of Δ__K__~I~ versus total life fatigue. Such calculations, not different from residual life predictions, are easily performed by using the local stress distributions determined near the weld toes in the absence of crack‐like defects. More precisely, the analytical expressions for __K__~I~ are based on a simple combination of the notch stress intensity factors __K__~1~^N^ and __K__~2~^N^ for opening and sliding modes. Then, fatigue strength predictions, as accurate as those b

Who reads From a Local Stress Approach to Fracture Mechanics: a Comprehensive Evaluation of the Fatigue Strength of Welded Joints?

Author

B. Atzori; P. Lazzarin; R. Tovo

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 8756-758X)

Published

1999

Language

EN

Field

Engineering (Physical Sciences)