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加工表面双向反射分布函数的测量与建模

Measurement and Modeling of Bidirectional Reflectance Distribution Function on Cutting Surface

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摘要

提出了一种基于同轴光显微成像的加工表面双向反射分布函数(BRDF)测量方法,采用激光共聚焦显微镜获得了不同粗糙度样块表面的BRDF测量值。测量结果表明,样块表面BRDF会随着粗糙度及微观形貌变化,该测量方法能够获得不同微面元的BRDF测量值。建立了BRDF参数模型,采用遗传算法对测量数据进行处理,确定了最优模型参数。将模型计算结果与测量结果进行了误差分析,最大相对均方根误差为9.97%。结果表明,建立的BRDF模型具有可行性,能准确地描述加工表面反射信息。

Abstract

A measurement method of bidirectional reflectance distribution function (BRDF) on the cutting surface is proposed based on the coaxial optical microscopic imaging. The BRDF measurement values on sample surfaces with different roughnesses are obtained by using the laser confocal microscopy. The measurement results show that, the BRDF on the sample surface varies with the roughness and the micro-topography, and this measurement method can obtain the BRDF measurement value on different microfacets. The BRDF parameter model is built and the optimal model parameters are obtained when the measurement data are processed by the genetic algorithm. The error analysis between the model calculation results and the measurement results is carried out and the maximum relative mean square root error is 9.97%. The results show that the established BRDF model is feasible and can accurately describe the reflection characteristics on the cutting surfaces.

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中图分类号:O436.2

DOI:10.3788/aos201838.1029001

所属栏目:散射

基金项目:陕西省自然科学基础研究项目(2015JM5205)

收稿日期:2018-03-15

修改稿日期:2018-04-13

网络出版日期:2018-05-08

作者单位    点击查看

史卫朝:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
郑建明:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
李言:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
李旭波:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
安倩楠:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048

联系人作者:郑建明(zjm@xaut.edu.cn); 史卫朝(shiweichao@xaut.edu.cn);

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引用该论文

Shi Weichao,Zheng Jianming,Li Yan,Li Xubo,An Qiannan. Measurement and Modeling of Bidirectional Reflectance Distribution Function on Cutting Surface[J]. Acta Optica Sinica, 2018, 38(10): 1029001

史卫朝,郑建明,李言,李旭波,安倩楠. 加工表面双向反射分布函数的测量与建模[J]. 光学学报, 2018, 38(10): 1029001

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