Thesis
MATERIAL AND SCAN SPACING VARIATION FOR IMPROVED MECHANICAL PERFORMANCE OF ADDITIVELY MANUFACTURED MATERIALS AT CRYOGENIC TEMPERATURES
Washington State University
Master of Science (MS), Washington State University
01/2022
DOI:
https://doi.org/10.7273/000004509
Handle:
https://hdl.handle.net/2376/125345
Abstract
To leverage the increasingly rare resources that are available through aerospace, ease of air and space access must be improved. Although the cost of these aerospace missions has been reduced by up to three orders of magnitude, the millions of dollars that are required to access space limit the rate by which these resources can be utilized. Therefore, alternative methods to reduce the cost of air and space flight must be explored. Some of these methods include the reduction of vehicle mass and improved part efficiency and performance. The additive manufacturing (AM) of polymer matrix composites (PMCs) presents a unique option for reducing the mass of aerospace vehicles and thereby the cost required for launch. Also, there are many AM metal matrix composite (MMC) systems that can increase part efficiency and performance. These solutions also have the potential to reduce the cost of terrestrial applications where cryogenic temperatures are present. Thus, this thesis explores the mechanical characterization of these materials at cryogenic temperatures and the effect material deviations have on part mass and performance. To assert accurate data obtainment in all material characterization, the mechanical load frame utilized for mechanical data acquisition, the Cryogenic Accelerated Fatigue Tester (CRAFT), is first detailed herein. Next, a mechanical characterization of the additively manufactured AlSi10Mg alloy and an MMC alternative are obtained. Third, the mechanical performance of an additively manufactured PMC liquid hydrogen tank constituent is collected in addition to an analysis on the effect the processing parameters have on the mechanical behavior. These developments permitted the recommendation for alternative material and processing parameter selections that have the potential to reduce launch vehicle dry mass and improve application performance. Beyond the observed improvements detailed within this thesis, the data acquired encourages further cryogenic design optimization through modifications made to material selection and development.
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Details
- Title
- MATERIAL AND SCAN SPACING VARIATION FOR IMPROVED MECHANICAL PERFORMANCE OF ADDITIVELY MANUFACTURED MATERIALS AT CRYOGENIC TEMPERATURES
- Creators
- Reece Michael Adams
- Contributors
- Jacob Leachman (Advisor)Amit Bandyopadhyay (Committee Member)Lloyd Smith (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Mechanical and Materials Engineering, School of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Number of pages
- 73
- Identifiers
- 99900877441401842
- Language
- English
- Resource Type
- Thesis