Effects of heat energy on morphology and properties of selective inhibition sintered high density polyethylene

D. Rajamani; E Balasubramanian

doi:10.15282/jmes.13.1.2019.05.0375

Authors

D. Rajamani Centre for Autonomous System Research, Department of Mechanical Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai - 600062, India
E Balasubramanian Centre for Autonomous System Research, Department of Mechanical Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai - 600062, India

DOI:

https://doi.org/10.15282/jmes.13.1.2019.05.0375

Keywords:

selective inhibition sintering, heat energy, high density polyethylene, mechanical properties, surface quality

Abstract

This study provides an account of comprehensive experimentation and mechanical characterisation of high density polyethylene (HDPE) parts that are fabricated through an additive manufacturing process called selective inhibition sintering (SIS). In this study, test specimens are fabricated by selective fusing of HDPE particles through controlled heating. Morphological studies and mechanical property evaluation of these specimens are carried out to assess the impact of energy on sintering of HDPE particles and structural integrity. Results indicate that, heat energy up to a threshold level of 28.48 J/mm²results in superior fusion of the HDPE particles, and further increase causes degradation of the structure. Surface roughness, tensile and flexural properties of SIS parts are compared with those of injection moulded parts for assessing their suitability to engineering applications.

References

ISO/ASTM Standard 52900. Additive Manufacturing-General Principles-Terminology. ISO/ASTM International, Switzerland; 2015.

Degrange J. Paradigm shift from rapid prototyping to direct manufacturing. Proceedings from the SLS user group meeting. Orlando; 2003.

Wohlers. Rapid prototyping tooling and manufacture. Annual state of the Industry report. Wohlers associates. USA; 2003.

Jauffres D, Lame O, Vigier G, Dore F, Douillard T. Sintering mechanisms involved in high-velocity compaction of nascent semi crystalline polymer powders. Acta Materialia 2009; 57: 2550-2559.

Khalil Y, Kowalski A, Hopkinson N. Influence of energy density on flexural properties of laser-sintered UHMWPE. Additive Manufacturing 2016; 10: 67-75.

Gu D, Zhang G. Selective laser melting of novel nanocomposite parts with enhanced tribological performance. Virtual and Physical Prototyping 2013; 8 (1): 11-18.

Calignano F, Manfredi D, Ambrosio E.P, Luliano L, Fino P. Influence of process parameters on surface roughness of aluminium parts produced by DMLS. International Journal of Advanced Manufacturing Technology 2013; 67 (9): 2743-2751.

Zhang J, Khoshnevis B. Selective separation (SSS) A new layer based additive manufacturing approach for metals and ceramics. Proceedings from the 26th SFF symposium, Austin, TX. 2015; 71-79.

Hopkinson N, Erasenthiran P. High speed sintering- Early research into a new rapid manufacturing process. Proceedings from the 15th SFF symposium, Austin, Texas, 2004; 312-320.

Khoshnevis B, Asiabanpour B, Mojdeh M, Koraishy B, Palmer K, Deng Z. SIS- A new SFF method based on powder sintering. Proceedings from the 13th SFF symposium, Austin, Texas, 2002; 440-447.

Asiabanpour B, Palmer K, Khoshnevis B. An experimental study of surface quality and dimensional accuracy for selective inhibition of sintering. Rapid Prototyping Journal 2004; 10 (3): 181-192.

Asiabanpour B. An experimental study of factors affecting the selective inhibition sintering process. PhD Thesis, University of Southern California, 2003.

Asiabanpour B, Khoshnevis B, Palmer K. Advancements in the selective inhibition sintering process development. Virtual Physical Prototyping 2006; 1(1): 43-52.

Aravind A, Arunkumar P, Balasubramanian E. Comparative study of High performance Polymers in Selective Inhibition Sintering process through Finite Element Analysis. Journal of Polymers and Polymer Composites 2017; 25(3): 199-202.

Arunkumar P, Balasubramanian E, Chandrasekhar U. Investigation on multi-layer selective inhibition sintering process using finite element analysis. Materials Today Proceedings 2017; 4(2): 2439-2444.

Balasubramanian E, Rajamani D, Arunkumar P. Modeling and prediction of optimal process parameters in wear behaviour of selective inhibition sintered high density polyethylene parts. Progress in Additive Manufacturing 2018; 3 (3): 109-121.

Rajamani D, Balasubramanian E, Arunkumar K, Silambarasan M, Bhuvaneshwaran G. Experimental investigations and parametric optimization of process parameters on shrinkage characteristics of selective inhibition sintered high density polyethylene parts. Experimental Techniques 2018; 42 (6): 631-644.

Hong Ho HC, Cheung WL, Gibson I. Morphology and properties of selective laser sintered bisphenol a polycarbonate. Industrial and Engineering Chemistry Research 2003; 42: 1850-1862

Overview of materials for high density polyethylene (HDPE), Injection Moulded. Retrieved from http://www.matweb.com; July 2018.

Sachdeva A, Sharanjit S, Sharma VS. Investigating surface roughness of parts produced by SLS process. International Journal of Advanced Manufacturing Technology 2013; 64: 1505-1516.