Investigating the effect of laser shock process on fracture and fatigue properties of 2024-T351 aluminum alloy using numerical modeling

Document Type : Mechanics article

Authors

1 Msc student, Department of Mechanical Engineering, Quchan University of Technology, Quchan, Iran

2 Assistant Professor, Department of Mechanical Engineering, Quchan University of Technology, Quchan, Iran

3 Graduated Msc, Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Irann

Abstract

One of the most important challenges facing mechanical parts that are exposed to dynamic loads in various industries, such as automotive and aerospace, is their failure due to fatigue. Al-2024 series alloys are widely used due to their high strength-to-weight ratio and high fatigue resistance. Therefore, increasing the fatigue life of structures made of these types of alloys is always one of the most important design issues. In this study, the impact of changes in laser pulse pressure parameters as well as the percentage of overlap of laser effect points in the laser shock process, its effect on the fracture and fatigue behavior of aluminum alloy with the help of numerical modeling methods and also experimental tests were carried out and then evaluated. they got. After examining the results of the fracture tests, it was observed that the fracture toughness of the shocked samples increases by 38%. Also, the fatigue life of the samples treated with this method has been improved by 10-32% in different conditions, and in general, the shock process has been effective in improving the fracture and fatigue behavior of aluminum alloy.

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Main Subjects

References

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Journal of Modeling in Engineering
Volume 21, Issue 75
December 2023
Pages 67-82

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History

  • Receive Date: 14 April 2023
  • Revise Date: 27 May 2023
  • Accept Date: 10 June 2023

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