Newmark Structural Engineering Laboratory

Department of Civil and Environmental Engineering

College of Engineering

University of Illinois at Urbana-Champaign

Student Instrumentation Workshop
Machine Shop
Hydraulic Equipment
      Manually Controlled Hydraulic Equip.
      Servo-Controlled Hydraulic Equip.
      Testing Machines
            2.7 MN (600 kip)
            445 kN (100 kip)
            222 kN (50 kip)
            50 kN (11 kip)
            89 kN (20 kip)
            500 kN (112 kip)
            Testing Calendar
      Equipment Reservations
Testing Floor
Structural Testing Hardware

500 kN (112 kip) INSTRON biaxial servo-controlled hydraulic frame


Load frame: Cruciform custom made

Actuator: 4 actuators Model A484.116

  • Static load capacity: ±500 kN (±112 kip)
  • Dynamic load capacity: ±500 kN (±112 kip)
  • Piston displacement: ±50.8 mm (±2 in.)

Power supply: 503.13 series

  • Volume capacity: 340 x 10-3 m3/min. (90 gpm)
  • Pressure: 20.7 MPa (3,000 psi)

The shake table is driven by a brushless motor amplifier which is embedded in a UPM-15-03 Universal Power Module. Apart from powering the motor, the system includes an independent power supply which is used to power instrumentation on the models such as accelerometer, strain gauges or potentiometers. The amplifier specifications are:

Power Amplification:

  • Input voltage: 120 VAC
  • Maximum current: 25 Amps
  • Continuous current: 12.5 Amps
  • Brushless commutation: 120 Deg

Signal Conditioning Section:

  • DC output supply: ± 12 VDC
  • Maximum current: 1 Amp

Grips: custom made

Controller: 4 controllers INSTRON 8500 Plus

  • Control modes: position, load, strain I, strain II, in phase, out of phase
  • Computer: PowerMac for both control and acquiring data from up to 16 channels using LabView software
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