基于智能传感器的弹性模量测量方法

doi:10.14139/j.cnki.cn22-1228.2022.06.006

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摘要

本文提出一种弹性模量测量方法，设计并 3D 打印制作测量支架，利用 MEMS 倾角传感器得到支架随金属丝形变旋转的微小角度的初始数据，通过 Origin 软件以及 Matlab 软件进行移动平均滤波以及差异点取均值算法得到测量角度，并根据三角函数关系得到测量金属丝在不同拉力下的长度形变量。根据拉伸法中弹性模量与形变量之间的对应关系，得到待测金属丝的弹性模量。实验结果测得的杨氏模量与理论值接近，相对不确定度约为 5．49%。

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	郭俊伟
	王忠民
	时术华
	贺长伟

关键词: 弹性模量测量支架 MEMS 倾角传感器移动平均滤波差异点取均值

Abstract:

A measuring method of elastic modulus is proposed，the measurement bracket is designed and made by 3D printer．The MEMS inclination sensor is used to get the initial data of the tiny angle of the bracket rotating with the deformation of the wire． The moving average filtering and the average algorithm of the difference points are used to get the measuring angle，and the length deformation of the measuring wire under different tensile forces are obtained according to the trigonometric function．According to the corresponding relationship between elastic modulus and deformation in the drawing method，the elastic modulus of the metal wire to be measured is obtained．The experimental results show that the Young’s modulus is close to the theoretical value，and the relative uncertainty is about 5．49%．

Key words: elastic modulus measurement bracket MEMS inclination sensor moving average filtering the average algorithm of the difference points

出版日期: 2022-12-25 发布日期: 2022-12-25 整期出版日期: 2022-12-25

ZTFLH:

O 4-33

引用本文:

郭俊伟, 王忠民, 时术华, 贺长伟 . 基于智能传感器的弹性模量测量方法 [J]. 大学物理实验, 2022, 35(6): 31-34.
GUO Junwei, WANG Zhongmin, SHI Shuhua, HE Changwei . Elastic Modulus Measurement Method Based on Intelligent Sensor . Physical Experiment of College, 2022, 35(6): 31-34.

链接本文:

http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2022.06.006 或 http://dawushiyan.jlict.edu.cn/CN/Y2022/V35/I6/31

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