Acquisition of Portable Two-Axis Servo Hydraulic Testing System for Materials Research and Education

9302467爱因斯坦麻省理工学院多个系的众多研究项目和学术课程都要求具备双向加载的能力。拟议的便携式两轴液压测试系统将用于此目的。该系统由Instron制造，由两个模块化液压执行器(带有5 GPM伺服阀)组成，容量分别为11和22 Kips，每个行程为6“。执行机构将由安装在脚轮上的6 GPM液压泵提供动力。控制台将安装在手推车上，并提供单轴和双轴功能。每个执行器都可以配置为作用力控制、行程控制或外部传感器控制。数字函数发生器确实适应了两个致动器运动之间的相移。这些设备将是麻省理工学院复兴(资源开采、材料和能源、水库、岩土、环境和建筑工程)实验室的一部分，该实验室是土木工程、材料科学和工程、机械工程、海洋工程和地球、大气和行星科学系的联合实验室。教师、研究生和本科生都在使用这个实验室。将使用该设备的典型研究项目有：双轴压缩下水泥基复合材料微破裂过程的实验研究(Pi：C.Leung)模型岩石和真实岩石的断裂结合研究(Pi：H.Einstein)土壤的循环疲劳(Pi：J.T.Germaine)麻省理工学院研究与教育的密切联系意味着研究生和本科生将使用他的设备进行研究项目或具有实验要求的课程。

9302467 Einstein Numerous research projects and academic courses in several departments at MIT require the capability to apply loads in two directions. The proposed portable two-axis hydraulic testing system will be used for this purpose. The system fabricated by Instron, consists of two modular hydraulic actuators (with 5 gpm servo-valves) and capacities of 11 and 22 kips respectively, each with a 6" stroke. The actuators will be powered by a 6 gpm hydraulic pump mounted on casters. The control console will be cart mounted and provide uni-axial and biaxial capabilities. Each actuator can be configured for force control, stroke control or external transducer control. The digital function generator does accommodate for a phase shift between the two actuator motions. The equipment will be part of the MIT REMERGENCE (Resource Extraction, Materials and Energy, Reservoir, Geotechnical, ENvironmental and Construction Engineering) Laboratory, a joint laboratory of the Departments of Civil Engineering; Materials Science and Engineering; Mechanical Engineering; Ocean Engineering and Earth, Atmospheric and Planetary Sciences. Faculty, graduate and undergraduate students use this laboratory. Typical research projects for which the equipment will be used are: Experimental Investigation of Microcracking Processes in Cementitious Composites under Biaxial Compression (PI: C. Leung) Fracture Coaalescence Research on Model Rock and Real Rock (PI: H. Einstein) Cyclic Fatigue of Soils (PI: J.T. Germaine) The close tie-in between research and education at MIT implies that graduate and undergraduate students will work with his equipment be it in research projects or courses with experimental requirements.