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Loading-Unloading Cycles of Three-Dimensional-Printed Built Bimaterial Structures With Ceramic and Elastomer.
- Source :
-
Journal of Manufacturing Science & Engineering . Apr2017, Vol. 139 Issue 4, p1-6. 6p. - Publication Year :
- 2017
-
Abstract
- This paper studies the loading-unloading behaviors of a three-dimensional (3D)-printing built bimaterial structure consisting of an open-cellular plaster frame filled with silicone. The combination of the plaster (ceramic phase) and silicone (elastomer phase) is hypothesized to possess a nonlinearly elastic property and a better ductility. Four-point bending tests with programmed cycles of preceding deformations were conducted. The results show that there exists a linear-nonlinear transition when the bending deflection is around 2 mm in the first cycle bending. As the cycle proceeds, this linear-nonlinear transition is found at the maximum deflection of the previous cycle; meanwhile, the bending stiffness degrades. It is believed that the occurrence of microcracks inside the plaster frame is the mechanism behind the phenomenon. The silicone provides a strong network suppressing the abrupt crack propagation in a brittle material. The effects of the frame structure and plaster-silicone ratio were also compared. A high plaster content and large cell size tend to have a higher stiffness and obvious linear to nonlinear transition while it also has more significant stiffness degradation. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CERAMICS
*ELASTOMERS
*SILICONES
Subjects
Details
- Language :
- English
- ISSN :
- 10871357
- Volume :
- 139
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Journal of Manufacturing Science & Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 121542719
- Full Text :
- https://doi.org/10.1115/1.4034668