Impacts of process parameters on shape memory properties of stereolithography manufactured parts: An experimental analysis

Jing Zhao, Muyue Han, Lin Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The emergence of smart materials coupled with additive manufacturing technology has provided competitive advantages over traditional manufacturing systems in terms of manufacturing flexibility, product functionality, and the ability to switch between multiple phases under given external stimuli. Although the fabricability of shape memory materials has been widely explored in stereolithography systems, the shape memory performance of printed smart structures has not been extensively studied. More specifically, in current literature, the printing process is mainly considered independent of material characteristics, and a lack of information is reported on how the printing parameters affect the shape fixity and free recovery performance of the printed parts. Therefore, this work is dedicated to experimentally investigating the influences of parameters from both the stereolithography printing process and thermomechanical process (i.e., shape programming and free recovery) on the shape memory properties. Five parameters, including layer thickness, scan speed, maximum programmed angle, hold time, and recovery time, are experimentally analyzed for their impacts on the shape morphing capabilities. According to the results of this study, a variation of 14.33% on the free recovery ratio can be observed when the scan speed is altered. In addition, the printing process parameters exhibit high levels of dominance in affecting the shape memory performance over parameters involved in the thermomechanical process, such as hold time and maximum programmed angle.

Original languageEnglish (US)
Title of host publicationAdditive Manufacturing; Advanced Materials Manufacturing; Biomanufacturing; Life Cycle Engineering; Manufacturing Equipment and Automation
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791885062
DOIs
StatePublished - 2021
EventASME 2021 16th International Manufacturing Science and Engineering Conference, MSEC 2021 - Virtual, Online
Duration: Jun 21 2021Jun 25 2021

Publication series

NameProceedings of the ASME 2021 16th International Manufacturing Science and Engineering Conference, MSEC 2021
Volume1

Conference

ConferenceASME 2021 16th International Manufacturing Science and Engineering Conference, MSEC 2021
CityVirtual, Online
Period6/21/216/25/21

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

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