Development of High-Temperature Strain Gauges
Development of High-Temperature Strain Gauges
复制标题
高温应变片的开发
DOI：
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发表时间：
1959
期刊：
影响因子：
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通讯作者：
R. Bertodo
中科院分区：
文献类型：
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作者：
R. Bertodo
本文仅限于对研制一种能在1000°C温度下工作、固有精度为± 5%的应变计所进行的工作进行综述。大量电阻合金在室温下作为未粘结的长导线进行了试验，从所得结果中选择了少量电阻合金在高温下以应变计的形式作进一步研究。研究了冶金变化、几何形状和长期暴露等因素对应变片性能的影响。一些粘结介质，一些市售的，进行了审查，特别是在负载下的蠕变，剪切强度和耐腐蚀性和热冲击。最后，结合高温下的稳态应变测量进行了初步试验，得出了应变计因子是单元丝晶格缺陷的函数的结论，因此，只有当阻抗为零时，应变计因子才是温度敏感的。
This paper is restricted to a review of the work carried out in order to develop a strain gauge capable of operating at temperatures up to 1000°C with an inherent accuracy of ±5 per cent.A large number of resistance alloys were tested as unbonded long wires at room temperature and, from the results obtained, a small number were selected for further investigation, in the form of gauges, at high temperatures. The effects of factors such as metallurgical changes, geometric shape and long-term exposure on the behaviour of the gauges were investigated. A number of bonding mediums, some commercially available, were examined with particular reference to creep under load, shear strength and resistance to erosion and thermal shock. Finally some preliminary tests in conjunction with the measurement of steady strains at elevated temperatures were undertaken.It is concluded that the gauge factor is a function of the lattice imperfections of the element wire and, as such, will be temperature-conscious only if the impe...