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Collapsibility behaviour of ABS P400 pattern built by portable FDM machine

Shukri, M. S. and Marwah@Omar, Omar Mohd Faizan and Sharif, S. and Ibrahim, Mustaffa and Mohamad, Elmy Johana (2015) Collapsibility behaviour of ABS P400 pattern built by portable FDM machine. In: 4th International Conference on Advanced Manufacturing Technology (ICAMT 2015), 20-22 September 2015, Johor Bahru, Malaysia.

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Abstract

Studies on the use of rapid prototyping pattern built from the conventional FDM machine are reported quite extensively, however less focus was given on pattern from portable FDM machine which has ability to be used in direct investment casting. This study presents an analysis of collapsibility behaviour during the burnout process of ARS P400 patterns built form a portable FDM machine. The internal design structure consisted of square 90° and polygon structures respectively. The patterns were constructed in a semi cylindrical geometry which are wrapped with 4 mm of ceramic shell. Experiments were conducted with varying temperatures starting from 30°C until 150°C with increment rate of 5°C per minutes. Meanwhile for the numerical simulation, the temperature chosen was between 30°C to 120°C with 10°C increment per minutes. Observation was made at glass transition temperature (Tg) near ll0°C. It was found that shell cracking occurred on the ceramic shell. In addition, the polygon pattern tends to collapse inwardly which did not occurred on the square pattern during the burnout process. Results also shows that, there is a significant amount of stress reduction on both square and polygon amounting to 45% respectively. Besides that, the amount of strain on pattern itself showed an approximate of 9% reduction. Moreover, there was a greater difference in terms of ceramic shell strain reduction which was 38% for square as compared to polygon patterns. Last but not least, there is 11% reduction of strain when comparing the square against the polygon patterns in terms of axial main on ceramic shell

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: direct investment casting; portable fused deposition modeling; rapid prototyping
Subjects: T Technology > TS Manufactures > TS155-194 Production management. Operations management
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Manufacturing and Industrial Engineering
Depositing User: Mrs. Nurhayati Ali
Date Deposited: 15 Feb 2016 06:39
Last Modified: 15 Feb 2016 06:39
URI: http://eprints.uthm.edu.my/id/eprint/7389
Statistic Details: View Download Statistic

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