作者：张强^1,2,3, 孔韦海^1,2,3, 刘燕^1,2,3, 万章^1,2,3, 费勤楠^1,2,3, 胡盼^1,2,3

作者单位：1. 合肥通用机械研究院, 安徽 合肥 230031;
2. 国家压力容器与管道安全工程技术研究中心, 安徽 合肥 230031;
3. 安徽省压力容器与管道安全技术省级实验室, 安徽 合肥 230031

关键词：应力腐蚀;持久载荷;测试系统;LabVIEW

摘要：

针对原有应力腐蚀试验设备载荷测量不准确、加载过程易产生附加弯矩等缺点,设计制造出一种基于LabVIEW的持久载荷应力腐蚀测试系统,由持久载荷应力腐蚀试验装置和数据采集系统组成。通过变更测量物理量实现试验过程中载荷的准确施加与计量,采用类似万向联轴器式的铰接连接消除加载过程中容易产生的附加弯矩。试验结果表明:该持久载荷应力腐蚀测试系统完全满足NACE TM01772005标准和GB/T 41572006标准中拉伸试验方法对试验设备的要求,利用数据采集装置实现试验数据的自动采集与试验过程的全监控,保证试验的科学性与准确性。

The study and application of sustained-load stress corrosion test system

ZHANG Qiang^1,2,3, KONG Weihai^1,2,3, LIU Yan^1,2,3, WAN Zhang^1,2,3, FEI Qinnan^1,2,3, HU Pan^1,2,3

1. Hefei General Machinery Research Institute, Hefei 230031, China;
2. National Safety Engineering Technology Research Center for Pressure Vessels and Pipelines, Hefei 230031, China;
3. Anhui Safety Engineering Technology Laboratory for Pressure Vessels and Pipelines, Hefei 230031, China

Abstract: A new sustained-load stress corrosion test system based on LabVIEW was designed and manufactured to overcome the disadvantages of old stress corrosion test equipment, such as load measurement inaccuracies and easy to produce additional bending moment. It was comprised of sustained-load stress corrosion test equipment and data acquisition system. The equipment achieved the accurate measurement of the load by changing the measured physical quantity, and the hinge joint which is similar to universal coupling is used to eliminate the additional bending moment during loading. Tests indicated that the system was completely in accordance with the requirements of tensile testing method on test equipment in NACE TM0177——2005 and GB/T 4157——2006 standard, and the data acquisition device realized the test data automatic acquisition and full monitoring of testing process, which ensure the scientificity and accuracy of the test.

Keywords: stress corrosion;sustained-load;test system;LabVIEW

2016, 42(6): 85-89  收稿日期: 2016-01-10;收到修改稿日期: 2016-02-27

基金项目: 合肥通用机械研究院青年基金(2015010432)

作者简介: 张强(1987-),男,安徽合肥市人,助理工程师,硕士研究生,主要从事材料腐蚀方向的研究工作。

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