氧化铝陶瓷激光立体光固化工艺参数建模及优化
Parameter Modeling and Optimization of Laser Stereolithography Process for Alumina Ceramics
张钊 1崔毛毛 1王霄 1沈文凯 1王涛 1刘会霞1
作者信息
- 1. 江苏大学机械工程学院,江苏 镇江 212013
- 折叠
摘要
为了预测立体光固化氧化铝陶瓷的抗弯强度并优化工艺参数,基于响应面实验设计方法,建立了立体光固化工艺参数与氧化铝陶瓷弯曲试样抗弯强度之间的数学模型,并进行了方差分析(ANOVA)与模型验证.基于所建立的模型,分析了扫描速度、扫描间距、分层厚度和激光功率及其交互作用对氧化铝陶瓷抗弯强度的影响规律与机理,并对响应最优值进行求解.结果表明,扫描间距、扫描速度、分层厚度和激光功率都对氧化铝陶瓷抗弯强度具有显著影响,最佳工艺参数组合为扫描速度为2382 mm/s,扫描间距为0.128 mm,分层厚度为0.127 mm,激光功率为206 mW,在该参数组合下得到的抗弯强度最优解为302 MPa.ANOVA和模型验证结果表明,该模型的预测值与实际值吻合度较高,模型具有较高的可靠性,对提高立体光固化氧化铝陶瓷的机械性能有很好的指导意义.
Abstract
To predict the flexural strength of stereolithography alumina ceramics and optimize the process parameters,a mathematical model is developed based on the response surface methodology.This model establishes the relationship between process parameters and the flexural strength of alumina bending specimens.Analysis of variance(ANOVA)and model validation is performed.The established model is used to analyze the effects and mechanisms of scanning speed,scanning spacing,slice thickness,and laser power,as well as their interactions on flexural strength of alumina ceramics,to determine the optimal response.The results show that the scanning spacing,scanning speed,laser power,and slice thickness significantly impact the flexural strength of alumina ceramics.The optimal combination of process parameters is scanning speed of 2382 mm/s,scanning spacing of 0.128 mm,slice thickness of 0.127 mm,and laser power of 206 mW.The flexural strength at this parameter combination is 302 MPa.The results of ANOVA and model validation demonstrate that the predicted values of the model closely match the real values,indicating high reliability.This model has good guiding significance for improving the mechanical properties of stereolithography alumina ceramics.
关键词
激光立体光固化/氧化铝陶瓷/工艺参数优化/抗弯强度Key words
laser stereolithography/alumina ceramics/process parameter optimization/flexural strength引用本文复制引用
出版年
2024
NETL
NSTL
万方数据