Hollow Cylinder (Dynamic) System

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The Hollow cylinder test involves four different applied stresses to the sample, Axial, Torsional, Inner and Outer confining stresses. This gives four degrees of freedom to the deformation of the specimen.
The sample is in the form of a thick hollow cylinder fixed between two rigid platens. The hollow cylinder test aims to study the behaviour of the application of three unequal principal stresses to the specimen and the impact of the stresses from rotation when the specimen is rotated.
The system includes five different controllers. Two electro-mechanical actuators (controlled by Dynamic Servo Controllers) which are used to control the rotation and the axial load, while 2/3 pressure controllers are used to control the Inner, Outer and Back pressures. During the test Vertical load, Inner and Outer Cell pressure/volumes, Sample volume change, Vertical deformation (axial strain) and Shear deformation (i.e. rotation) are measured:

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Hollow Cylinder (Dynamic) System

Features:

Capable of Dynamic Hollow Cylinder tests (10 kN, 100 Nm and 5 Hz)
Electro-mechanical control using the DSC3000MM for Vertical loading and Horizontal torque
Data logging via the DSC3000MM (up to 8 Input Channels per Axis)
Cell Top lift included as standard
Balance Ram included as standard
Load/Torque, 100 mm Displacement & 20 Bar Pressure sensors included, as well as brackets and de-airing block
Can perform Dynamic Triaxial Tests (subject to additional hardware)
Can accommodate on-sample sensors (subject to additional hardware)

Detailed product specifications

Vertical Dynamic Actuator	0.0001 - 5 Hz, +/- 10 kN
Horizontal Dynamic Actuator (Torque)	0.0001 - 5 Hz, +/- 100 Nm
Confining Pressure	2000 kPa
Sample Size	Outer diameter 100 mm; Inner diameter 60 mm; Height 200 mm
Electrical Reqt.	90-240VAC, 50-60 Hz, 1ph
PC Interface	Ethernet or USB
Dimensions (W x D x H)	910 x 722 x 2380 mm
Weight	390 kg