Polyamide powders were utilized as the test material to assess the mechanical properties of selective laser sintering(SLS)parts.The investigations focused on the influences of laser power,scanning spacing,placing angle,and their pairwise interactions on the tensile strength of the parts.The influence mechanisms of process parameters on the part forming were revealed by the observation of fracture morphology using a scanning electron microscope.Moreover,the regression equations between the process parameters and tensile strength were obtained via a response surface design,assessing the model's validity and accuracy.Subsequently,the regression equations were taken as the objective functions.The mixed-strategy-based improved whale optimization algorithm(MSIWOA)was employed to optimize the tensile strength of SLS parts,and the optimal process parameters were compared with the results from the whale optimization algorithm(WOA)and experimental data.The results show that the MSIWOA exhibits higher accuracy and feasibility in optimizing the process parameters of SLS polyamide parts,offering technical methods for enhancing the mechanical properties of SLS parts.
关键词
聚酰胺/选择性激光烧结/工艺参数优化/MSIWOA
Key words
Polyamide/Selective Laser Sintering/Optimization of Process Parameter/Mixed-Strategy-Based Improved Whale Optimization Algorithm
维普
万方数据