应用数学和力学2024，Vol.45Issue(12)：1577-1588,12.DOI:10.21656/1000-0887.440344
纳秒激光去除漆层传热模型及其机理研究
Study on Heat Transfer Models and Mechanisms for Nanosecond Laser Removal of Paint Layers
摘要
Abstract
In view of the absorption and diffusion characteristics of laser in the paint layer and the base layer,heat transfer model Ⅰ and thermal connection boundary conditions for the paint layer and the metal base layer was established.As a comparison,corresponding heat transfer models Ⅱ and Ⅲ were established,with the thermal connection conditions at the interface between the paint layer and the base layer ignored.In model Ⅲ,both the paint layer and the base layer were connected to the bulk heat source.A semi-analytical solution to the problem was obtained through the Laplacian transformation.Corresponding numerical solution examples were given through the Laplacian numerical inverse transformation.The results show that,model Ⅰ gives continuous temperature distributions,while model Ⅱ and model Ⅲ give discontinuous temperature distributions,which goes against physical reality.Secondly,based on model Ⅰ,the predicted time and energy density for cleaning and removing the paint layer are between those of model Ⅱ and model Ⅲ.The work provides a theoretical ref-erence for improving the laser cleaning process.关键词
清洗模型/衔接条件/损伤阈值/热应力Key words
cleaning model/thermal connection condition/damage threshold/thermal stress分类
数学引用本文复制引用
于松洁,崔高伟,许光映..纳秒激光去除漆层传热模型及其机理研究[J].应用数学和力学,2024,45(12):1577-1588,12.基金项目
舟山市科技基金(2017C41002 （）
2016C41009) （）
