摘要
自主研制的CSD–60滑动变形计经历了3个研制阶段,在国外同种设备的基础上形成不同测距及接触形式的系列化产品,其中三瓣式滑动变形计为首创。研制出相应的数据采集仪和数据处理软件,提高了现场测试的效率和自动化程度。对样机进行标定、整机线性以及防渗等一系列试验,自主研制的滑动变形计系列在测试原理、仪器结构及部件衔接方面得到了很大提高,样机的长期稳定性较好,测试精度达到0.02 mm/m,能满足现场测试精度的要求,试验也验证了三瓣式接触的几何稳定性优于四瓣式接触。研究结果表明,采用高精度传感器配置和三瓣式接触量测方法,能进一步提高变形计的测试精度。
CSD - 60 sliding micrometer is developed in three stages, and precision sensor and INVAR steel are adopted in the device development. The CSD - 60 sliding micrometer is developed from gauging distance and contraction style based on overseas products. Three invention patents are authorized; and the new products such as three-petal sliding micrometer are presented. Data acquisition instrument is considered corresponding to the products for improving the efficiency of in-situ tests; and related software is developed for data processing; so the firsthand monitoring information can be achieved. Long-term experiments on calibration and linearity assembly are performed for the serial products. Statistical analysis of the experimental data shows that observation theory and structure of instrument are greatly improved in the third stage; three-petal contact is prior to four-petal one in geometric stability. The precision of CSD- 60 sliding micrometer is 0.02 mm/m with working temperature ranging from -10℃ to 50℃. Its water resistance is over 0.5 MPa, which can meet the requirements of civil engineering. If high accuracy sensor is applied to CSD - 60 sliding micrometer or three-petal contact method is substituted for four-petal one, the gauging precision of CSD - 60 sliding micrometer will be further improved.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2008年第11期2363-2368,共6页
Chinese Journal of Rock Mechanics and Engineering
