超声波技术用于零件表面硬度无损检测的研究  

Research on Non-destructive Detection of Part Surface Hardness with Ultrasonic Technology

作　　者：蔡鹏[1] 程玉华[2] 谢驰[2] 胡瑞飞[2] 

机构地区：[1]四川大学制造科学与工程学院 [2]四川大学

出　　处：《工具技术》2007年第2期85-89,共5页Tool Engineering

基　　金：四川省科技厅应用基础基金资助项目(项目编号:D302GY029-051)

摘　　要：基于超声波振动频率特性与零件表面硬度的对应关系,研制开发了超声波硬度检测仪,有效解决了材料表面硬度的无损检测问题。根据实测数据进行曲线拟合,建立了测量系统在低硬度区间超声波频率值-硬度值的关系曲线和数学模型,并在生产现场对实测值与标准值进行了对比验证。Based on the corresponding relationship between ultrasonic vibration frequency and hardness of part surface, an ultrasonic-based hardness tester was developed to detect the hardness without destruction on material surface. Based on actual measured data, the performance curve and math model of frequency-hardness of this measuring system in the lower- hardness area were established by curve fitting. The comparison and verification of measured values vs normal values were carried out in the production field.

关 键 词：超声波  硬度 无损检测 振动频率  曲线拟合 

分 类 号：TG146.21[一般工业技术—材料科学与工程]