基于分形理论的旋转超声磨削Si3N4陶瓷表面微观形貌
Surface micromorphology of Si3N4 ceramic by rotating ultrasonic grinding based on fractal theory
孙永国 1王伟 1李文知 1魏恒举 1魏士亮1
作者信息
- 1. 哈尔滨理工大学,高效切削及刀具国家地方联合工程实验室,哈尔滨 150080
- 折叠
摘要
为了研究旋转超声磨削Si3N4 陶瓷表面的微观形貌,基于分形理论研究不同加工参数下Si3N4 陶瓷表面微观形貌的变化.设计旋转超声磨削Si3N4 陶瓷正交试验,对比分析不同加工参数对Si3N4 陶瓷表面分形维数和多重分形谱的影响,并设计单因素试验研究不同加工参数下Si3N4 陶瓷表面的粗糙度、分形维数和多重分形谱.结果表明:旋转超声磨削Si3N4 陶瓷表面时,分形维数能更好地表征其加工表面的缺陷状态,多重分形谱则能更好地表征其加工表面缺陷的起伏程度变化.
Abstract
To study the surface morphology of Si3N4 ceramics using rotary ultrasonic grinding,changes in the surface morphology under different machining parameters were analyzed based on fractal theory.Orthogonal experiments were designed to compare and analyze the effects of various processing parameters on the fractal dimensions and multifractal spectra of the Si3N4 ceramic surface.Additionally,single-factor experiments were conducted to study the roughness,fractal dimensions,and multifractal spectra of the Si3N4 ceramic surface under different processing parameters.The res-ults show that fractal dimensions can effectively characterize the defect state of the processed surface of Si3N4 ceramics during rotary ultrasonic grinding,while multifractal spectra can better represent the degree of fluctuation in surface de-fects.
关键词
旋转超声磨削/Si3N4陶瓷/分形维数/多重分形谱/微观形貌Key words
rotary ultrasonic grinding/Si3N4 ceramics/fractal dimension/multifractal spectrum/microstructure引用本文复制引用
基金项目
黑龙江省普通本科高等学校青年创新人才培养项目(UNPYSCT-2020195)
出版年
2024
国家科技期刊平台
NSTL
万方数据