test rig crack plane

试验台裂纹平面

• 批准号: 491042529
• 金额: --
• 依托单位: Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2022
• 资助国家: 德国
• 起止时间: 2021-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/491042529?language=en
• 关键词: test; rig; crack; plane

The machine applied for is used for tensile and compressive loading of test specimens made of different materials. The unique feature of this machine is the possibility to vary the amount of applied load over the cross-section of the test specimen. Thus, required crack geometries can be adjusted and also the movement of a crack in the test specimen (e.g. under earthquake loading) can be simulated. Active control according to the required crack width parameters is possible and allows to freeze the crack state over required time periods and to compensate for creep effects of the concrete. This is essential, for example, for the investigation of specimens and crack geometry using computed tomography. In addition, the equipment applied for makes it possible to load inserts or retrofitted fasteners under alternating tensile and or alternating transverse loads. The control system allows control of the load with the associated crack geometry over any period of time.

该机适用于不同材料试件的拉伸和压缩加载。这台机器的独特之处在于可以在试件的横截面上改变施加的载荷量。因此，可以调整所需的裂纹几何形状，还可以模拟试件中裂纹的运动(例如，在地震载荷下)。根据所需的裂缝宽度参数进行主动控制是可能的，并允许在所需的时间段内冻结裂缝状态并补偿混凝土的徐变影响。例如，这对于使用计算机层析成像研究试件和裂纹几何形状是必不可少的。此外，所申请的设备可以在交变拉伸和/或交变横向载荷下加载插件或改装紧固件。该控制系统允许在任何时间段内利用相关的裂纹几何形状来控制载荷。