基于声学原理陶瓷砂轮硬度表征方法的探讨  

The Exploration of Characteristic Methods for the Hardness of Ceramic Grinding Wheel Based on the Acoustic Principle

作　　者：刘芳[1] 焦金旭 

机构地区：[1]中原工学院,郑州450007

出　　处：《中原工学院学报》2014年第3期33-37,共5页Journal of Zhongyuan University of Technology

基　　金：河南省教育厅科学技术研究重点项目(13A430126)

摘　　要：通过自制的信号采集工具对不同硬度的陶瓷砂轮进行敲击,采集砂轮的声信号,分析并提取可用的特征参数,通过降噪处理,得到相对纯净的砂轮震动波形。对不同硬度砂轮的声波波形进行了分析,结果表明:砂轮敲击声波的特征峰有三组,其中两组分布在声波频率段,另外一组在超声波频率段;声波特性反映的是砂轮整体性能,对组织结构反映不敏感;同一硬度的砂轮具有相同的声波特性;在频率8 000～13 500Hz之间,特征峰的位置随砂轮硬度等级的提高向高频率方向移动。The testing of nondestructive has always been a conundrum of product property test. We tap the different hardness of ceramic grinding wheels and gather the acoustic signal of ceramic grinding wheel with the homemade signal acquisition tool, then analyse analysis and extract the available feature parameters. Through noise reduction processing, relatively pure vibration waveform of grinding wheel is obtained. Based on the analysis of different grade wheel hardness acoustic waveform, it is concluded that the grinding wheel has three groups of acoustic characteristic peak, two groups of distribution in the acoustic frequency, the other group in the ultrasonic frequency. Acoustic characteristics reflect the overall performance of the grinding wheel , and it is not sensitive to the organizational structure. The same hardness of the grinding wheel has the same acoustic characteristics. In the frequency of 8000Hz to 13500Hz, the characteristic peak position moves to high frequency region with the increase of grinding wheel hardness level.

关 键 词：声波 砂轮硬度 频率 

分 类 号：TG73[金属学及工艺—刀具与模具]