Examining Mechanical Strength Characteristics of Selective Inhibition Sintered HDPE Specimens Using RSM and Desirability Approach

2017 International Conference on Advanced Technologies in Design, Mechanical and Aeronautical Engineering

工业技术;机械制造;航空航天工程

Rajamani, D.^1 ; Esakki, Balasubramanian^1

Centre for Autonomous System Research (CASR), Department of Mechanical Engineering, Veltech Dr.RR and Dr.SR University, Chennai

600 062, India^1

关键词: Fabricated parts;    Functional parts;    High density polyethylene(HDPE);    Optimization studies;    Process parameters;    Response surface methodology;    Selective inhibition;    Strength characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/234/1/012002/pdf
DOI  :  10.1088/1757-899X/234/1/012002

来源: IOP

【 摘 要 】

Selective inhibition sintering (SIS) is a powder based additive manufacturing (AM) technique to produce functional parts with an inexpensive system compared with other AM processes. Mechanical properties of SIS fabricated parts are of high dependence on various process parameters importantly layer thickness, heat energy, heater feedrate, and printer feedrate. In this paper, examining the influence of these process parameters on evaluating mechanical properties such as tensile and flexural strength using Response Surface Methodology (RSM) is carried out. The test specimens are fabricated using high density polyethylene (HDPE) and mathematical models are developed to correlate the control factors to the respective experimental design response. Further, optimal SIS process parameters are determined using desirability approach to enhance the mechanical properties of HDPE specimens. Optimization studies reveal that, combination of high heat energy, low layer thickness, medium heater feedrate and printer feedrate yielded superior mechanical strength characteristics.