Title: Thermoplastic Composite Processing Using Superplastic Formed Magnesium Bladders
Authors: Steven M. Shewchuk, Jared B Hughes, Corey M. Vasel and Gail L. Hahn
Abstract: This paper discusses a method of manufacturing thermoplastic composite parts using superplastic formed AZ31 magnesium bladders. This method superplastically forms magnesium against the composite part at temperatures lower than traditional superplastic forming temperatures and above thermoplastic composite melting temperatures to consolidate the thermoplastic composite. Historically, superplastic forming has been completed with pressurized argon gas. An investigation into the use of nitrogen gas was completed and the resulting parts were evaluated. The part configurations are evaluated for attenuation, surface roughness, and ply locations on a gentle contoured single sided tool surface with single use bladders. It was found that the use of nitrogen as compared to argon as a bladder pressurization gas had a negative impact on the part quality.
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Conference: SAMPE 2020 | Virtual Series
Publication Date: 2020/06/01
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