纸盆材料杨氏模量测试误差分析  

Measuring tolerance analysis for Young's modulus of paper cone material

作　　者：陈瑞祥 

机构地区：[1]国光电器股份有限公司,广东广州510800

出　　处：《电声技术》2017年第6期36-38,共3页Audio Engineering

摘　　要：在许多杨氏模量测试方法中,其核心原理是向被测样条施加载荷,使用各种方法测试样条的受力弯曲变形的变形量,再利用所得到结果以及这些变形量与材料杨氏模量的关系式来计算得到材料的杨氏模量值。作者在对一些测试方法研究过程中发现其样条截取方法与计算关系式之间存在比较大的误差和不确定性,并对其中一些误差进行了分析,提出了在测量纸盆材料杨氏模量值时,不能直接在扬声器纸盆上直接截取样条,应该压成与目标纸盆锥顶附近密度相同的平直纸片,在这均匀平直的纸片上截取测试样条,才能保准获得准确的测量结果。There have been various methods to measure Young＇ s modulus. The basic principle of these methods is first adding load on sample, then measuring metamorphose of sample by different ways, and finally evaluating the Young＇ s modulus from the results in terms of related equations. The present work indicates that there exists large ernn＇s and uncertainty in the course of sampling and calculation with equation. By analyzing the source of errors, it is recommended that sample can＇ t be taken from paper cone directly. To get exact measuring result, the sample shouht he taken in flat paper with same density as target paper cone center area.

关 键 词：杨氏模量 惯性矩 纸盆 平直纸片 

分 类 号：TN643[电子电信—电路与系统]