压痕硬度快速测量方法的研究
发布时间：2018-12-31 21:17
【摘要】：采用Oliver-Pharr方法计算压痕硬度时,需要获取完整的压痕加载、卸载曲线,因此,不能满足现场生产节拍的要求。为提高测量效率,基于Oliver-Pharr方法,推导出加载阶段的压头位移与压痕载荷平方根之间呈二次函数关系。通过数学变换,建立压痕硬度与压头位移和压痕载荷平方根之间二阶导数的解析模型。试验表明,该方法能够获取较高精度的压痕硬度,提高试验效率,满足在线测量的要求。
[Abstract]:When the indentation hardness is calculated by Oliver-Pharr method, the complete indentation loading and unloading curves need to be obtained, so it can not meet the requirements of field production. In order to improve the measurement efficiency, based on the Oliver-Pharr method, the quadratic function relationship between the indenter displacement and the square root of indentation load is deduced. An analytical model of the second derivative between indentation hardness and indentation head displacement and square root of indentation load is established by mathematical transformation. The test results show that this method can obtain high precision indentation hardness, improve the efficiency of the test, and meet the requirements of on-line measurement.
【作者单位】： 湖北汽车工业学院机械工程学院;
【基金】：湖北省自然科学基金(2014CFB623) 湖北汽车工业学院博士基金(BK201303)
【分类号】：TB302.3
[Abstract]:When the indentation hardness is calculated by Oliver-Pharr method, the complete indentation loading and unloading curves need to be obtained, so it can not meet the requirements of field production. In order to improve the measurement efficiency, based on the Oliver-Pharr method, the quadratic function relationship between the indenter displacement and the square root of indentation load is deduced. An analytical model of the second derivative between indentation hardness and indentation head displacement and square root of indentation load is established by mathematical transformation. The test results show that this method can obtain high precision indentation hardness, improve the efficiency of the test, and meet the requirements of on-line measurement.
【作者单位】： 湖北汽车工业学院机械工程学院;
【基金】：湖北省自然科学基金(2014CFB623) 湖北汽车工业学院博士基金(BK201303)
【分类号】：TB302.3
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