Computing the Fatigue Life of Cold Spray Repairs to Simulated Corrosion Damage

Daren Peng; Caixian Tang; Neil Matthews; Rhys Jones; Sudip Kundu; R K Singh Raman; Alankar Alankar

doi:10.3390/ma14164451

Computing the Fatigue Life of Cold Spray Repairs to Simulated Corrosion Damage

Materials (Basel). 2021 Aug 9;14(16):4451. doi: 10.3390/ma14164451.

Authors

Daren Peng¹, Caixian Tang², Neil Matthews², Rhys Jones^{1

3}, Sudip Kundu^{1

4}, R K Singh Raman¹, Alankar Alankar⁴

Affiliations

¹ Centre of Expertise in Structural Mechanics, Department of Mechanical and Aeronautical Engineering, Monash University, Wellington Rd, Clayton, VIC 3800, Australia.
² RUAG Australia, 836 Mountain Highway, Bayswater, VIC 3153, Australia.
³ ARC Industrial Transformation Training Centre on Surface Engineering for Advanced Materials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, John Street, Hawthorn, VIC 3122, Australia.
⁴ Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, Maharashtra, India.

Abstract

This paper summarises the findings of an investigation into the durability of cold spray repairs, also known as supersonic particle deposition or SPD repairs, to simulated corrosion damage in AA7075-T7351 aluminium alloy specimens. A feature of this paper is that it is the first to show how to perform the mandatory durability analysis of repaired corroded structures, where the corroded material is first removed by machining and then repaired using cold spray, in a fashion consistent with the requirements delineated in USAF Structures Bulletin EZ-19-01, MIL-STD-1530D, and the US Joint Services Structural Guidelines JSSG2006.

Keywords: EZ-19-01; MIL-STD-1530D; cold spray repair; durability; skin corrosion.

Grants and funding

HFW 1-2020/H. F. Webster, Dakota, USA