Design and development of aluminum alloy 6061-T6 pressure vessel liner for aerospace applications: A technical brief-Reference-Cited by-同舟云学术

Design and development of aluminum alloy 6061-T6 pressure vessel liner for aerospace applications: A technical brief

Published:2021-12-13 Issue: Volume: Page:146442072110651
ISSN:1464-4207
Container-title:Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications

Author:

Pramod R¹,Shanmugam N Siva¹^ORCID,Krishnadasan C K²,Radhakrishnan G³,Thomas Manu³

Affiliation:

1. Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India

2. Structural Engineering Entity, Vikram Sarabhai Space Centre, Thiruvananthapuram, Kerala, India

3. Rocket and Payload Fabrication Facility, Vikram Sarabhai Space Centre, Thiruvananthapuram, Kerala, India

Abstract

This work mainly focuses on designing a novel aluminum alloy 6061-T6 pressure vessel liner intended for use in launch vehicles. Fabrication of custom-made welding fixtures for the assembly of liner parts, namely two hemispherical domes and end boss, is illustrated. The parts of the liner are joined using the cold metal transfer welding process, and the welding trials are performed to arrive at an optimized parametric range. The metallurgical characterization of weld joint reveals the existence of dendritic structures (equiaxed and columnar). Microhardness of base and weld metal was 70 and 65 HV, respectively. The tensile strength of base and weld metal was 290 and 197 MPa, respectively, yielding a joint efficiency of 68%. Finite-element analysis of a uniaxial tensile test was performed to predict the tensile strength and location of the fracture in base and weld metal. The experimental and predicted tensile test results were found to be in good agreement.

Publisher

SAGE Publications

Subject

Mechanical Engineering,General Materials Science

Link

http://journals.sagepub.com/doi/pdf/10.1177/14644207211065114

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