Servo-Hydraulic Universal Testing Machine
Specifications
Maximum Load
|
25kN |
Load Transducer
|
±25kN
|
Actuator Stroke
|
50mm
|
Frequency
|
0 to 70Hz
|
Electrical Supply¹
|
3 phase 415 Volts 50Hz @ 16A
|
Compressed Air
|
7 bar at 100 L/min
|
Dimension mm (WxDxH)
|
Frame 1000x1300x2400 Control Box 630x580x890
|
Working space required mm (WxDxH)
|
1100x2300x2600
|
Estimated Weight
|
Cabinet 680kg Power Pack 60 kg
|
| PC |
Required (Please enquire for minimum spec) |
¹ others available upon request
Test Methods Include
Asphalt
|
Modulus
- EN 12697-26 Annex C
- ASTM D4123
- AASHTO TP31
- AASHTO TP62
Permanent Deformation
|
Fatigue
Chinese Tests
- Bending; Creep; Splitting Test
Simple Performance Tests
- Dynamic Modulus; Flow number NCHRP9-19; NCHRP9-29
|
Unbound Materials
|
- AASHTO T307 (previously TP46)
- NCHRP 1-28A
|
System Elements
The CRT-UTM-HYD is comprised of:
- A rigid stainless steel loading frame.
- An externally mounted fatigue rated hydraulic actuator with Star servo valve.
- A sophisticated data acquisition and control system.
- An integral temperature controlled cabinet -20 to 30°C with double glazed viewing door.
- A motorised adjustable lower crosshead with automatic hydraulic frame clamping.
- Load transducer (±25kN capacity).
- Acquisition and control system includes:
- Signal conditioning for load transducer, thermocouples and displacement transducers.
- Servo-amplifier for PID control of servo-valve.
- Multifunction high speed, 16bit analogue to digital, 16bit digital to analogue and digital input-output card for closed loop computer control of system (National Instruments).