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Fatigue damage and life evaluation of thick bi-material double strap joints for use in marine applications
  • Rahul Iyer Kumar,
  • Pankaj Jaiswal,
  • Wim De Waele
Rahul Iyer Kumar
Universiteit Gent
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Pankaj Jaiswal
Universiteit Gent
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Wim De Waele
Universiteit Gent
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Abstract

The present-day interest in the use of composite-steel joints in primary marine applications requires an in-depth knowledge of the fatigue performance of thick adhesive joints. This paper reports on experimental tests, quasi-static and fatigue, performed on unaged and aged bi-material double strap joints with thick adhesive bondlines. The specimens are monitored by Digital Image Correlation and Infrared Thermography techniques to evaluate the types and extent of damage that occur in the joint during fatigue loading. The S-N curve of the aged joint is evaluated along with it's fatigue limit. It is found that the unaged specimens fail due to cohesive damage, hackles and disbond at the adhesive-adherend interface and the aged specimens failed due to delamination within the composite. The specimens that survived fatigue loading showed similar residual strength as specimens that were not fatigue loaded.

Peer review status:UNDER REVIEW

29 Nov 2021Submitted to Fatigue & Fracture of Engineering Materials & Structures
30 Nov 2021Assigned to Editor
30 Nov 2021Submission Checks Completed
01 Dec 2021Reviewer(s) Assigned
23 Dec 2021Review(s) Completed, Editorial Evaluation Pending