Optimization of Selective Laser Melting by Evaluation Method of Multiple Quality Characteristics

2017 International Conference on Aerospace Technology, Communications and Energy Systems

航空航天工程;无线电电子学;能源学

Khaimovich, A.I.^1 ; Stepanenko, I.S.^1 ; Smelov, V.G.^1

Department of Aircrafts Engines' Construction Technologies, Samara National Research University, Moskovskoye Shosse 34, Samara

443086, Russia^1

关键词: Grey relational analysis;    Minimum temperatures;    Multiple quality characteristics;    Optimization parameter;    Optimization problems;    Reinforcing elements;    Residual thermal stress;    Selective laser melting;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/302/1/012067/pdf
DOI  :  10.1088/1757-899X/302/1/012067

学科分类：航空航天科学

来源: IOP

【 摘 要 】

Article describes the adoption of the Taguchi method in selective laser melting process of sector of combustion chamber by numerical and natural experiments for achieving minimum temperature deformation. The aim was to produce a quality part with minimum amount of numeric experiments. For the study, the following optimization parameters (independent factors) were chosen: the laser beam power and velocity; two factors for compensating the effect of the residual thermal stresses: the scale factor of the preliminary correction of the part geometry and the number of additional reinforcing elements. We used an orthogonal plan of 9 experiments with a factor variation at three levels (L9). As quality criterias, the values of distortions for 9 zones of the combustion chamber and the maximum strength of the material of the chamber were chosen. Since the quality parameters are multidirectional, a grey relational analysis was used to solve the optimization problem for multiple quality parameters. As a result, according to the parameters obtained, the combustion chamber segments of the gas turbine engine were manufactured.