Evaluation of the Effects of Aging under Humidity and Temperature on the Moisture Absorption and Mechanical Degradation of Metal-Composite Adhesive Bonded Joints

Document Type : Solid Mechanics

Authors

1 Ph.D. Student, Department of Mechanical Engineering, Imam Hossein University, Tehran, Iran

2 Corresponding author: Assistant Professor, Department of Mechanical Engineering, Imam Hossein University, Tehran, Iran

Abstract

Recent advancements in composite manufacturing techniques have enabled the construction of large and complex geometries, in many cases, it is necessary to join composite and non-composite parts to achieve the desired structure. In various industries, examining the mechanical properties of metal-composite joints under different loading conditions, especially in hygrothermal environments, is of particular importance. To evaluate the long-term performance of adhesive bonded joints various aging methods can be applied.  In this paper adhesive joints exposed to 70 degrees Celsius temperature water for 90 days to simulate environmental conditions. This study focused on investigating moisture absorption in adhesive joints, comparing the strength of aged samples with those that were unaged. The results showed that metal-composite adhesive bonded joints weakened when exposed to hygrothermal aging conditions about 71 Precent compared to those that were not aged. Moreover, an analysis of the fracture surfaces indicated a shift from adhesive failure to cohesive failure.

Graphical Abstract

Evaluation of the Effects of Aging under Humidity and Temperature on the Moisture Absorption and Mechanical Degradation of Metal-Composite Adhesive Bonded Joints

Highlights

  • In metal-composite adhesive bonded joints, the load is uniformly distributed across the overlapped areas.
  • Moisture absorption in adhesive bonded joints reaches a saturation point after a certain period.
  • As the aging time increases, the strength of adhesive bonded joints decreases.

Keywords

Main Subjects


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References

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Aerospace Mechanics
Volume 20, Issue 4 - Serial Number 78
Serial No. 78, WinterQuarterly
March 2025
Pages 1-11

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History

  • Receive Date: 09 October 2024
  • Revise Date: 18 November 2024
  • Accept Date: 01 December 2024
  • Publish Date: 19 February 2025

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