Selective Laser Sintering of Calcium Polyphosphate: Finite Element Modeling and Experiments

被引：0

作者：

Shanjani, Yaser ^{[1
]}

Toyserkani, Ehsan ^{[1
]}

机构：

[1] Univ Waterloo, Rapid Prototyping Lab, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada

来源：

JOURNAL OF LASER MICRO NANOENGINEERING | 2009年 / 4卷 / 01期

关键词：

selective laser sintering; liquid phase sintering; calcium polyphosphate; porosity; heat affected zone; BONE SUBSTITUTE APPLICATIONS; DENSITY DISTRIBUTIONS; IN-VITRO; POLYMER; TEMPERATURE; SIMULATIONS; PREDICTION; SCAFFOLDS;

D O I：

10.2961/jlmn.2009.01.0006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, the selective laser sintering (SLS) process of a bio-composite blend comprising of biodegradable calcium polyphosphate (CPP) and polyvinyl alcohol (PVA), as a polymeric binder, is investigated. A multi-physics finite element model including both thermal and viscous sintering phenomena was developed and simulated in different process conditions. The model was used to predict temperature and porosity distribution of sintered regions throughout the process domain and period. It is observed that the porosity of the sintered region is a logistic function of the laser scanning speed and a negative logistic function of the laser power. The thickness of the fabricated CPP layers, using an experimental setup, fairly demonstrates an agreement with the simulation.

引用

页码：28 / 34

页数：7

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