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用于压痕测试的位移—载荷信号精密检测方法
发表时间：2009-09-30 浏览量：1859 下载量：921
| 全部作者： | 黄虎，赵宏伟 |
| 作者单位： | 吉林大学机械科学与工程学院 |
| 摘 要： | 论述了纳米压痕/划痕测试技术的发展，分析了测试装置的原理与构成，并以此为基础，着重分析了纳米压痕/划痕测试中载荷力传感器和位移传感器的工作原理、性能要求及其标定问题。对两类传感器进行标定试验，采用最小二乘法对标定试验数据进行曲线拟合，分别得到了两类传感器的线性拟合曲线和拟合方程，两类拟合方程的线性相关系数R2都接近于1，说明所用传感器具有很高的线性度。通过定义标定曲线拟合方程的斜率偏差率和截距偏差率，评价了两类传感器的稳定性和可靠性。将标定后的两类传感器应用于研制的纳米压痕测试装置，对某玻璃进行了压痕测试，得到了被测玻璃试件的载荷与压入深度试验关系曲线。 |
| 关 键 词： | 信号检测；传感器；载荷信号；位移信号；精密检测；纳米压痕 |
| Title： | Precision measurement method of displacement and loading signal for nanoindentation test |
| Author： | HUANG Hu, ZHAO Hongwei |
| Organization： | College of Mechanical Science and Technology, Jilin University |
| Abstract： | The development of nanoindentation and nanoscratch test was discussed. Components and the theory of the test device were analyzed. Based on these, the work principle, performance requirements and calibrations of the loading sensor and displacement sensor for the test were analyzed as the most important things. Calibration experiments of two kinds of sensors were done. The experiment data was processed with the least squares method. Curves and equations of linear fitting were obtained and their linear correlation coefficient R2 was close to 1 which showed that the loading sensor and displacement sensor all had high linearity. The stabilities and reliabilities of the two sensors were evaluated by the rate of slope deviation and intercept deviation defined. Based on those works, the nanoindentation test for a kind of glass was carried out via the device with the sensors calibrated, and the relation curves between normal load and penetration depth were obtained. |
| Key words： | signal detection; sensor; loading signal; displacement signal; precision measurement; nanoindentation |
| 发表期数： | 2009年9月第18期 |
| 引用格式： | 黄虎，赵宏伟. 用于压痕测试的位移—载荷信号精密检测方法[J]. 中国科技论文在线精品论文，2009，2（18）：1980-1986. |
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