Split Hopkinson Pressure Bar System Designed for High-Strain-Rate Testing of Small Specimens

ZONEDE has introduced the Portable Split Hopkinson Pressure Bar System, a compact testing solution designed for high-strain-rate research involving small specimens, precision components, and fine materials. With a modular and lightweight structure, the system is positioned for laboratories, industrial testing environments, and field applications where conventional Split Hopkinson Pressure Bar systems may be impractical.

The Split Hopkinson Pressure Bar System focuses on dynamic characterization under high strain rates, with a specified strain rate range of 10²–10⁴ s⁻¹. Its design combines a compact testing structure with a pneumatic launching system, enabling researchers and engineers to conduct high-speed material evaluations while maintaining convenient equipment handling.

Compact Design for Laboratory and On-Site Testing

One of the key features of the Split Hopkinson Pressure Bar System is its portable configuration. The modular structure can be rapidly assembled and disassembled, supporting convenient transportation between different testing locations. This makes the system suitable for laboratories, industrial facilities, and mobile testing applications.

The equipment has dimensions of 1500 mm × 500 mm × 200 mm (L × W × H). Its compact format provides a practical option for research environments where installation space and equipment mobility are important considerations.

The pressure bar has a 4 mm diameter and is manufactured from steel with a specified yield strength of Rp0.2 ≥600 MPa. The bar straightness is specified at ≤0.05 mm, supporting the precision requirements of dynamic testing involving miniature specimens and mechanical components.

High-Speed Data Acquisition for Dynamic Characterization

High-speed data acquisition is another central feature of the Split Hopkinson Pressure Bar System. The system provides a data acquisition rate of up to 4 MHz per channel, while FPGA-based control supports high-frequency sampling of complete stress-wave signals.

According to the provided specifications, the equipment operates with a working pressure of 0.07–0.6 MPa. An optional temperature range of −150°C to +500°C further expands the testing conditions available for research applications.

The pneumatic launching system is designed for straightforward operation and quick replacement of launch tubes. A portable air pump can also be used for mobile testing applications, reinforcing the system's emphasis on flexibility and transportability.

Applications Across Multiple Material Fields

The Portable Split Hopkinson Pressure Bar System is presented for several application areas. In precision components testing, it supports high strain-rate testing of miniature components and precision mechanical parts. In advanced materials research, it can be applied to the dynamic characterization of electronic materials, thin specimens, composites, metals, concrete, and rock.

The system is also designed for portable on-site testing, allowing mobile impact testing for laboratory research, industrial inspections, and field applications.

Its listed test materials include metals and alloys, composite materials, concrete, rock, precision mechanical components, electronic materials, and other small-scale engineering specimens. This broad material coverage gives researchers a flexible platform for studying the dynamic response of different specimen types.

The Split Hopkinson Pressure Bar System combines four major design priorities: portable design, suitability for small specimens, high-speed data acquisition, and easy operation. Its Ø4 mm pressure bars are optimized for miniature specimens, while the modular structure facilitates transportation and setup.

For laboratories and engineering teams conducting high-strain-rate research, the Split Hopkinson Pressure Bar System provides a compact approach to dynamic material characterization. With a strain-rate capability of up to 10⁴ s⁻¹, high-speed data acquisition up to 4 MHz per channel, optional temperature control, and a portable structural design, the Split Hopkinson Pressure Bar System is positioned as a practical tool for precision components, advanced materials, and small-scale engineering specimen testing.

The above information is for reference only. We specialize in the R&D and production of testing instruments for mechanical properties of materials under extreme conditions, covering Hopkinson bars, high‑temperature hardness testers, impact penetration testing machines, and other series. For specific product details, technical specifications, or application solutions, please contact us for professional advice.