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

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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.