Investigation of Fatigue Growth Behavior of an Inclined Crack in Aluminum Alloy Plate

In the present paper, fatigue tensile tests are carried out on a servo-hydraulic fatigue testing machine to study the whole propagation process of the inclined crack. And the scanning electron microscope is employed to observe the micromorphology of the fracture surface to further probe the crack gr...

Full description

Saved in:
Bibliographic Details
Published in:Journal of failure analysis and prevention 2018-10, Vol.18 (5), p.1159-1167
Main Authors: Wang, Jun, Zhang, Xing-Quan, Wei, Wei, Tong, Jin-Yu, Chen, Bin, Fang, Guang-Wu, Yin, Yuan-De
Format: Article
Language:English
Subjects:
Aluminum base alloys
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Corrosion and Coatings
Crack propagation
Fatigue failure
Fatigue life
Fatigue testing machines
Fatigue tests
Finite element method
Fracture mechanics
Fracture surfaces
Growth rate
Materials Science
Mathematical analysis
Numerical analysis
Propagation
Quality Control
Reliability
Safety and Risk
Solid Mechanics
Stress concentration
Stress distribution
Stress intensity factors
Technical Article > -Peer-Reviewed
Tensile tests
Thin plates
Trajectories
Tribology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In the present paper, fatigue tensile tests are carried out on a servo-hydraulic fatigue testing machine to study the whole propagation process of the inclined crack. And the scanning electron microscope is employed to observe the micromorphology of the fracture surface to further probe the crack growth rate from a microscopic point of view. Meanwhile, the finite element method has also been applied to predict the crack propagation trajectory and the fatigue life of the sample with two finite element analysis codes. The fatigue tensile tests indicate the inclined crack propagates along the direction perpendicular to the external loading and the crack growth rate increases continuously based on the micromorphology of the fracture surface. The numerical analysis results reveal the variation of the stress distribution at the crack tip as well as the crack trajectory at different extension steps. Moreover, the stress intensity factor values are discussed in detail. And the computed results, the inclined crack propagation path and fatigue life of the sample, agree well with the experimental ones, which provide certain referential significance for the prediction of the inclined crack propagation in thin plate.
ISSN:1547-7029
1728-5674
1864-1245
DOI:10.1007/s11668-018-0503-8