论文部分内容阅读
随着工业和科学技术突飞猛进地发展,应变片电测技术也得到了越来越广泛的应用。现在不仅机械、冶金、建筑、化工等工业中,而且在国防和尖端技术、如飞机、舰船、火箭、宇宙飞船的性能测试中也得到应用。此外,配以其它各种适当的仪器,应变片电测技术还可用作计量、调节、控制、报警等。应变片是粘贴式电阻应变计的简称,应变片通常由敏感元件,基底和引线组成。图1为一种常见应变片的构造图,1是用高电阻金属丝(直径约为0.25～0.10毫米)绕成的线栅,粘贴在两张纸片组成的基底2中,线栅的两端焊有较粗的铜丝3作引线,供与测量电路连接用,4为护纸片。使用时用粘合剂将应变片
With the rapid development of industry and science and technology, strain gauge electrical measurement technology has also been more and more widely used. Now it is not only used in the industries of machinery, metallurgy, construction, chemical industry, but also in the performance tests of national defense and cutting-edge technologies such as aircraft, ships, rockets and spacecraft. In addition, together with a variety of other suitable instruments, strain gauge electrical measurement technology can also be used as measurement, regulation, control, alarm and so on. Strain gages are short for paste-type strain gages. Strain gages usually consist of a sensing element, a substrate, and leads. 1 is a structural diagram of a common strain gauge, 1 is a high resistance wire (diameter of about 0.25 ~ 0.10 mm) wire wound around the grid, paste the composition of two sheets of substrate 2, the two wire grid End welding with thick copper wire 3 for the wire for connection with the measuring circuit, 4 for the paper care. Strain gauge is used when using adhesive