Features :

 1. Planar Biaxial System – 100kN:

This system employs multiaxial loading technology to apply and measure in-plane stresses in both the X and Y axes

a) Strain measurement

 Using DIC and Video extensometer

High Temperature Test Facility Upto 600oC

2. Axial Torsion Test System-250kN/2000Nm:

 a) Video extensometer:

This is an Optical (non-contact) instrument to measure strain on specimen.

b) Electronic extensometer 

Room Temperature:

Fixed gauge length: 25 mm (max. elongation  50% of gauge length)

Variable gauge length: 10, 15, 20, 25, 30, 35, 40, 45, 50 mm

5 mm and 10 mm dynamic extensometer

High Temperature (up to 14000C ):

Gauge length: 12mm (Max. elongation +20%/-10%)

Multi-axial Extensometer: 

Gauge length: 25 mm

c) Clip on gauge or CTOD gauge

Gauge length: 5 and 12 mm

d) Environmental chamber

Temperature Range:  -120 0C to +350 0C

e) Furnaces

Two zone furnace: 200-1200 degC ( Min. Gauge Length: 120 mm)

Three zone furnace: 200-1200 degC (Min. Gauge length: 16 mm) **Threaded samples are required.

f) Three Point and Four Point bend fixtures

Span: 38-305 mm

3. Axial Fatigue System- 100kN:

a) Video extensometer

This is an Optical (non-contact) instrument to measure strain on specimen.

b) Electronic extensometer

Room Temperature:

Fixed gauge length: 25mm (max. elongation  50% of gauge length)

Variable gauge length: 10, 15, 20, 25, 30, 35, 40, 45, 50 mm

5 mm and 10 mm dynamic extensometer

High Temperature (up to 1200 degC ):Gauge length: 12mm (Max. elongation +20%/-10%)

c) Clip on gauge or CTOD gauge

Gauge length: 5 and 12 mm

d) Environmental chamber

Temperature Range:  -120 0C to +350 0C

e) Furnaces:

Two zone furnace: 200-1200 degC ( Min. Gauge Length: 120 mm)

Three zone furnace: 200-1200 degC (Min. Gauge length: 16 mm) **Threaded samples are required.

f) Three Point and Four Point bend fixtures

Minimum Span: 38 mm

Maximum Span: 305 mm

g) MTS High temperature grips for Threaded and Shouldered End Samples

4. Rotary Bending Fatigue System- 20Nm: 

Specifications: Machine capacity: up to 20 Nm (Bending moment) 

Operating speed: 200-10000 RPM 

Speed resolution: 1 RPM 

Operating temperature: ambient to 1000 degC 

Temperature control: +/- 20 degC 

Component diameter: 2-16 mm 

Dead weight: 1N-3Nos., 2N-1No., 5N-1No., 10N-2Nos., 20N-1No., 50N-1No. 

5. Digital Image Correlation (DIC):

The VIC-3D Fulcrum Module allows low-speed cameras to capture displacement and strain measurements during periodic, high-speed events. It allows users to accurately trigger low-speed cameras at peaks, valleys, or phase intervals in the driving frequency. Applications include fatigue tests.

Since VIC-3D calculates the Lagrangian strain tensor on the specimen surface, the transverse strain can be used to calculate the reduction in a cross-sectional area of the sample using a volume conservation constraint.

Technical specification related to high speed camera  :

• Maximum image capture rate: 1,50,000 fps (at minimum resolution) and 2000 fps(at maximum resolution)
• Minimum image capture rate: 50 fps
• Maximum Resolution: 1280×1024 pixels
• Memory Capacity: 17,500 images at maximum resolution.

Working Principle : 

1. Planar Biaxial System – 100kN:

It is a servo hydraulic machine which is an automatic device that uses error-sensing negative feedback to correct the action of a mechanism. It usually includes a built-in encoder or other position feedback mechanism to ensure that the output achieves the desired effect.It applies correctly only to systems where the feedback or error-correction signals help control mechanical position, speed or other parameters. The system uses closed-loop feedback, which classifies it as a servomechanism.

2. Axial Torsion Test System-250kN/2000Nm:

It is a servo hydraulic machine which is an automatic device that uses error-sensing negative feedback to correct the action of a mechanism. It usually includes a built-in encoder or other position feedback mechanism to ensure that output is achieving the desired effect.It applies correctly only to systems where the feedback or error-correction signals help control mechanical position, speed or other parameters. The system uses closed-loop feedback, which classifies it as a servomechanism.

3. Axial Fatigue System- 100kN:

It is a servo hydraulic machine which is an automatic device that uses error-sensing negative feedback to correct the action of a mechanism. It usually includes a built-in encoder or other position feedback mechanism to ensure that the output achieves the desired effect.It applies correctly only to systems where the feedback or error-correction signals help control mechanical position, speed or other parameters. The system uses closed-loop feedback, which classifies it as a servomechanism.

4. Rotary Bending Fatigue System- 20Nm:

The machine is designed based on the rotating beam principle. The load condition is similar to that of a simple beam symmetrically loaded at two points. When the load is applied, tensile and compressive stresses develop in the material below and above the neutral axis respectively. For the first one half revolutions, the stresses in the specimen originally below the neutral axis are reversed from tension to compression and vice versa. Upon completing the revolution, the stresses are again reversed so that during one revolution, the test specimen passes through a complete cycle of flexural stresses (tension and compression).

5. Digital Image Correlation (DIC):

DIC relies on finding the maximum of the correlation array between pixel intensity array subsets on two or more corresponding images, which gives the integer translational shift between them. The method tracks the changes in grey value pattern in small neighbourhoods called subsets during deformation.