Project case study · Dynamic material testing systems
Split Hopkinson Pressure Bar Testing System
MPI supplied and installed a Split Hopkinson Pressure Bar system for National Textile University, combining the mechanical bar assembly, pneumatic launch system, high-speed data acquisition and analysis tools required for dynamic material testing.
Project in brief
A complete high-strain-rate testing and data-analysis setup
The project required more than the pressure-bar assembly. MPI delivered the bars, striker options, pressure system, instrumentation, acquisition hardware and software environment as a coordinated research setup.
The recorded configuration was designed for dynamic testing across a wide strain-rate range, with high-frequency data capture and tools for producing strain, stress, strain-rate and stress–strain outputs.
Delivered configuration
Project specification and technical scope
The values below describe the published configuration delivered for this project. A new system can be configured against the buyer's required capacity, materials, controls, utilities, layout and compliance needs.
Pressure-bar assembly
- Bar material
- AL-7075 incident and transmission bars with 18 mm recorded diameter.
- Bar lengths
- 1,900 mm incident bar and 850 mm transmission bar.
- Striker options
- Recorded striker lengths of 100, 200, 300, 400 and 600 mm; recorded velocity 50 m/s.
Pneumatic and test range
- Pressure system
- 25-litre pressure tank with recorded operation up to 4 MPa.
- Strain-rate range
- Recorded range of 100–10,000 s⁻¹.
- Installed footprint
- Published setup dimension up to 9 metres.
Data acquisition and analysis
- DAQ
- Four-channel acquisition system with recorded maximum response frequency of 1 MHz.
- Instrumentation
- Digital oscilloscope, data logger, signal conditioners and supporting accessories.
- Software functions
- Data import/export, processing, curve creation, browsing, management and report output.
MPI project scope
What MPI coordinated and delivered
- Coordinated the mechanical, pneumatic, instrumentation and computing elements as one testing system.
- Supplied the bar assembly, striker set, pressure system and data-acquisition components.
- Managed installation, alignment, commissioning and initial verification.
- Provided operational guidance for testing, data capture and basic result processing.
Delivered value
Project outcome
Integrated dynamic testing
The delivered setup combined loading hardware, sensing, signal conditioning and data acquisition for high-strain-rate work.
Structured result processing
The recorded software functions support stress, strain, strain-rate and stress–strain output development.
Commissioned research system
MPI coordinated equipment supply, on-site installation and the operating handover for the university laboratory.
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