1. Planar Biaxial System – 100kN:

• Actuator movement : +/- 50mm
• Dynamically testing systems featuring extremely stiff, high-natural-frequency load frames with integral axial actuators.
• Digital controllers with high channel density, high capacity and superior configurability.
• Specialized software that streamlines test design, modification and execution
• Axial hydraulic wedge grips for room temperatures
• Hydraulic collet grips specifically designed for testing round specimens

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

• Column width: 250 mm
• Cross head travel: 450 mm
• Actuator movement: +/- 75 mm
• Rotary actuator movement: +/- 45⁰
• Dynamically rated axial/torsional testing systems featuring extremely stiff, high-natural-frequency load frames with integral axial and torsional actuators.
• Digital controllers with high channel density, high capacity and superior configurability.
• Specialized software that streamlines test design, modification and execution
• Axial/torsional hydraulic wedge grips for temperatures from -129° to 540°C.

3. Axial Fatigue System- 100kN:

• Column width -  210mm
• Cross head travel : 1250mm
• Actuator movement : +/- 125mm
• Digital controllers with high channel density, high capacity and superior configurability.
• Specialized software that streamlines test design, modification and execution.
• Hydraulic wedge grips for temperatures ranging from -129° to +540°C.
• Hydraulic collet grips specifically designed for testing round specimens

5. Digital Image Correlation (DIC):

• For Low Speed Camera
  • Maximum image capture rate: 75 fps
  • Resolution: 2448×2048 pixels
  • Sensor and its size: Sony IMX250(2/3”)
• For High Speed Camera
  • Maximum image capture rate: 1,50,000 fps (at maximum resolution) and 2000 fps(at minimum resolution)
  • Minimum image capture rate: 50 fps
  • Maximum Resolution: 1280×1024 pixels
  • Memory Capacity: 17,500 images at maximum resolution.

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: 100⁰-1400⁰  C ( Min. Gauge Length: 120mm)

Three zone furnace: 100⁰-1400⁰  C (Min. Gauge length: 250mm)


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 1400⁰C ):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: 100⁰-1400⁰ C( Min. Gauge Length: 120 mm)
• Three zone furnace: 100⁰ -1400⁰ C (Min. Gauge length: 250 mm)

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

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.

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.

This DIC is attached to other mechanical testing facilities such as Planar Biaxial System, Axial-Torsion System and Axial Fatigue System for non-contact strain measurement.

Journal Publication
1. " Fracture toughness characteristics of thermo-mechanically rolled direct quenched and partitioned steels" Gaurav Kumar, Sumit Ghosh, Sakari Pallaspuro, Mahesh Somani, Jukka Kömi ,Sushil K. Mishra , Amol A. Gokhale Material Science and Engineering A, Volume 840 2022

2."The Role of Microstructure Inhomogeneity in Ti-6Al-4V Forging on Fracture Toughness Behaviour", Anish Ranjan, Jyoti Shankar Jha, Sushil K. Mishra, Journal of Materials Engineering and Performance. 2022

3. "Design of a biaxial cruciform specimen with a high degree of plastic deformation". Amir Hamza Siddiqui, Jeet P. Patil, Sushil Mishra*Journal of Materials Processing Technology Paper under Review

4. Hitarth Maharaja, Bimal Das, Amit Singh, Sushil Mishra, “Comparative assessment of strain-controlled fatigue performance of SS 316L at room and low temperatures”, International Journal of Fatigue (2023)

5. A. H. Siddiqui, J. P. Patil, S. Mishra, “Design of a Biaxial Cruciform Specimen with a High Degree of Plastic Deformation and Yield Locus Evolution”, Experimental Mechanics (2023)

Oral Presentation:
Gaurav Kumar , Jeet Patil , Sakari Pallaspuro , Sumit Ghosh , Mahesh Somani , Sushil K. Mishra , Amol A. Gokhale "Tensile and Fracture Toughness Behaviour of Thermo-mechanically Rolled Direct Quenched & Partitioned (TMR-DQP) Steels".
Presented in :ASIA STEEL 2021 (5th-9th December 2021)

Paper presentation:

"Structural integrity assessments of Ni-Cr-Mo-V Steel", Satyaprakash Mishra, Anish Ranjan, Sushil Mishra, 8th international Conference on Product Life cycle Modeling and Synthesis (PLMSS) -2021, Paper Accepted for publication.

Poster Presentation: 

1. Rubal Dongarwar, Sushil Mishra, Rakesh Mote, Rajeev Kapoor, "Phase transformation in SS316L by low cycle cryo fatigue and it's reversion", NMD ATM 2022

2. Anantha Lakshmi Prasanna Tatavarty, Amit Singh, Sushil Mishra, SVS Narayana Murty, “Modeling the low cycle fatigue behaviour of AA2219 aluminium alloy”, NMD ATM 2022

3. Priya Tiwari, Amit Singh, SVS Narayan Murty, Sushil k. Mishra, “Mechanical and Microstructural Characterisation of AA2219”, NMD ATM 2022

4. Anish Ranjan, Amit Kumar Singh, Sushil Mishra, “Local Anisotropy in Strain Response of an α/β Titanium Alloy”, NMD ATM 2022

1. Planar Biaxial System – 100kN:

Sample Dimensions (mm): Preferable ASTM/equivalent standard samples

a) Gauge length: 200-350 mm
b) Width: 10-50 mm
c) Thickness: 0.5 - 19mm

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

Preferable ASTM/equivalent standard samples

• Round

Gauge length: 20-300 mm
Diameter: 6-26 mm

• Flat

Gauge length: 20-300 mm
Width: 10-50 mm
Thickness: ~0.5-25.9 mm

3. Axial Fatigue System- 100kN:

a) Round

   Gauge length: 20-300 mm

   Diameter: 6-22.9 mm
b) Flat

   Gauge length: 20-300 mm

   Width: 10-70 mm

   Thickness: ~0.5-19 mm

4. Rotary Bending Fatigue System- 20Nm:

Preferable ASTM standard samples
a) At Room temperature

Gauge length: 60-200 mm

Diameter: 2-16 mm
b)At elevate temperature

Gauge length: 200 mm

Diameter: 2-16 mm