合金韧窝断口三维微观形貌的白光相移干涉检测重构及分形表征  

White Light Phase-shifting Interferometer Detection,Reconstruction and Fractal Characterization of Alloy Dimple Fracture 3D Microstructure

作　　者：邹文栋[1] 黄长辉[1] 欧阳小琴 郑玱 

机构地区：[1]南昌航空大学无损检测技术教育部重点实验室,南昌330063 [2]中航工业江西洪都航空工业集团公司,南昌330024

出　　处：《中国机械工程》2010年第22期2675-2678,共4页China Mechanical Engineering

基　　金：航空科学基金资助项目(20085656018)

摘　　要：采用白光相移干涉术对30CrMnSiA合金韧窝断口表面微观形貌进行了检测,检测系统采用Linnik结构,检测实验中光学放大倍率为10,横向光学分辨率为1.2μm,纵向分辨率优于30nm,最大测程范围达80μm。对获得的三维形貌数据采用改进立方体覆盖法进行分维测算,得其断口表面分形维数为2.0317,相关系数为0.9983,结果表明,30CrMnSiA合金韧窝断口微观形貌具有典型的三维分形特征。该研究从实验上证明:白光相移干涉术是金属材料断口三维微观形貌检测重构的一种新方法,具有纵向分辨率高、重构效率高、速度快等特点。White light phase-shifting interferometry was adopted,for the measurement of better than 30nm,maximum measurement range up to 80μm in the experiments.The threedimensional topography data was tested by improved cubic covering method,obtaining the fracturemicrostructure of 30CrMnSiA alloys dimple fracture surface herein.The system used Linnik structure,and it was achieved optical magnification of 10,lateral optical resolution of 1.2μm,vertical resolution surface fractal dimension value of 2.0317,correlation coefficient of 0.9983.The results show that the dimple fracture surfaces of 30CrMnSiA alloys possess a typical three-dimensional fractal characteristics.This study was proved by the experiments that：white light phase-shifting interferometry is a new method for three-dimensional micro-fracture morphology testing and reconstruction of metallic materials,with property of high vertical resolution and reconstruction efficiency,fast speed and so on.

关 键 词：白光相移干涉 韧窝断口 三维形貌 改进立方体覆盖法 分形维数 

分 类 号：TG145[一般工业技术—材料科学与工程]