Multi-point measuring unit for a
maximum of 100 measuring points with incorporated triple mode amplifier
(CF 600 Hz, 5 kHz, and DC), computer interface and tape printer,
separate operator keyboard, and mains supply of 220 V. Ten Selector
units each for connection of 10 strain gauges in quarter-, half-, and
full-bridge circuits, as well as inductive transducers. Made by HBM,
Germany.
Digital measuring amplifier system with measuring rate of 1-9600
samples/sec, resolution of up to 20 bit = 1´000´000 digits by
averaging. Memory of up to 40´000 values, controllable via RS-232,
RS-485, or IEEE-488 interfaces. Eight 4.8 kHz amplifiers for strain
gauge transducers in full- or half-bridge configurations or DC
measurements +/-10V. Excitation voltage of 0.625-5V DC, ranges
+/-1.25-1280 mV/V, cutoff frequency 2200 Hz (-3dB), and 0ne A/D
converter per channel. Two DC amplifiers with voltages of +/-100mV,
+/-1V, and +/- 10V, with DC currents of +/-20mA, and +/-200mA. Made by
HBM, Germany.
Multi-channel Analysis System
FFT-based system for signal and system analysis. Areas of major
application include vibrations, acoustics, and structural and modal
testing. Hardware includes accelerometers, force transducers, charge
amplifiers, small vibration exciters, impact hammer, 7-channel data
acquisition system, 2 generator modules , and power amplifiers. Made by
B&K, Denmark.
Servo-hydraulic Shaking Table
Servo-hydraulic vibration system consisting of a 1200x1300mm, 440 kg
table in the vertical direction,and a horizontal slip table of
1200x1465mm on granite block. Dynamic capacity is +/- 45 kN with 50mm
nominal working stroke. 100mm diameter piston rod with integral LVDT. 2
Two-stage servo-valves each with a nominal flow rate of 50 l/min. 2 PCB
accelerometers. The hydraulic power supply consists of a 37 kW
electrically powered motor delivering 90 l/min. 210 bar operating
pressure and 300 liter oil reservoir. Digitally controlled via PC.
Made by Servotest, EC
Servo-hydraulic Actuators
·Servo-hydraulic
actuators are used for dynamic tests. They are in different capacities
including:
·
Maximum loading frequency is 10 Hz, and maximum stroke is +/- 150mm for each
actuator.
Servo-hydraulic Compression Testing Machine
Servo-hydraulic compression testing
machine for 1) concrete and 2) cement samples. Used for both cylindrical
and cubic samples. Made by M. Kauer GmbH, Germany.
Concrete:
Max.load 3,000 kN
Piston stroke 50mm
Cement
Max.load 200 kN
Piston stroke 30mm
Hydraulic
Jacks
Manually operated hydraulic system for applying force consisting of a
pump with a 4-way valve, and capable of producing 210 bar pressure.
Four 250 kN and two 750 kN pistons. Made by ENERPAC, USA.
Transducers and Gauges
Load cells: four 300 kN, two 1,000
kN, one, 50 kN, and one 250 kN.
LVDT: ranging from 20 to 200mm
Strain Gauges: singles and Rosetts
Accelerometers
Strong
Floor and Reaction Frames
A 12x12m strong floor with a grid of 1.5x1.5m connecting stations. Each
station capable of loading of up to 600 kN.
Five 1,000 kN reaction frames each standing 165cm high.
Shop
Tools
Tools for manufacturing light steel components/frame-structures are
available.
To Be
Added
Actuators including
4x1000 KN, Stroke ±200 mm
1x500 KN, Stroke ±500 mm
4x500 KN, Stroke ±200 mm
4x250 KN, Stroke ±200 mm
128 Channel Data Logger Supporting TEDS
Some of the above Actuator is going to be used in a new Testing Machine
for Seismic Isolators.
