摘要
飞秒激光由于其精密的控形控性加工能力,非常适合用于火箭破裂膜片压敏刻痕等功能性微结构的精密加工。针对飞秒激光加工的破裂膜片,采用共聚焦显微精密测量获取压敏位置尺寸形貌特征,使用二维小波变换实现刻痕几何尺寸与表面形貌解耦,基于重构后的表面形貌计算膜片表面应力集中系数,实现对加工质量的定量分析。在此基础上溯源并优化膜片的飞秒激光加工工艺,将破裂压力最大偏差从0.050MPa降低至0.012MPa,实现膜片的高效高质量加工,为膜片的工程化应用提供良好的技术支撑。
With the exceptional capability for precision shape and property control,femtosecond lasers are ideally suited for fabricating functional microstructures such as pressure-sensitive scribe lines on launch vehicle rupture diagrams.For femtosecond laser processed diagrams,confocal microscopy was employed to obtain dimensional and morphological characteristics of pressure-sensitive regions.Two-dimensional wavelet transform was then applied to decouple the geometric dimensions of scribe lines from surface topography.Based on the reconstructed surface morphology,the stress concentration factor on the diagram surface was calculated.Quantitative analysis of machining quality was obtained.Based on this,the ultrafast laser processing technology of diaphragms was traced back and optimized,resulting in a reduction of rupture pressure deviation from 0.05 MPa to 0.012 MPa.The improved process achieves both high efficiency and superior quality in diaphragms manufacturing.This provides strong support for the engineering application of diaphragms.
作者
匡以武
徐世俊
张余升
陆晨
冯淑红
张峻
张晨
杨思
赵辉
KUANG Yiwu;XU Shijun;ZHANG Yusheng;LU Chen;FENG Shuhong;ZHANG Jun;ZHANG Chen;YANG Si;ZHAO Hui(Shanghai Aerospace Equipment Manufacturer Co.,Ltd,Shanghai 200245,China;Aerospace System Engineering Shanghai,Shanghai 201109,China)
出处
《上海航天(中英文)》
2025年第S1期205-211,共7页
Aerospace Shanghai(Chinese&English)
基金
科技部重点研发计划资助项目(2022YFB4601700)。
关键词
运载火箭
增压输送系统
破裂膜片
压敏
飞秒激光
表面形貌
launch vehicle
pressurized and delivery system
rupture diaphragm
pressure-sensitive
femtosecond laser
surface topography
