Instron high-speed tensile hydraulic dynamic fatigue testing system

Many materials exhibit different behaviors at different strain rates, i.e. they have strain rate sensitivity. When the product is actually applied under high strain rate conditions, it becomes very important to characterize these dynamic characteristics over a wide speed range, especially when investigating product failure and determining the optimal weight design.

VHS Instron High Speed Tensile Hydraulic Dynamic Fatigue Testing SystemIt helps various industries predict material properties, thereby aiding in the design of components subjected to high strain rates throughout their lifecycle. Whether on the landing gear of an airplane, in collisions with road vehicles, or in the parachute straps when deployed, all of these examples involve one or more components of the product being subjected to high strain rates of impact. These components need to meet security and industry standards in order to compete in the same industry. Therefore, it has reliable operation and accurate data collectionInstron high-speed tensile hydraulic dynamic fatigue testing systemIt has become extremely important in designing safety and functional products, and verifying the effectiveness of computer-aided simulation tools, such as car collision simulations.

High strain rate applications and research areas include:
Characterization of metals, composite materials, and polymers, ranging from quasi-static to strain rates of 1000/s (depending on specimen design)
Accumulated damage of aerospace components under high strain rate impact conditions
• Car collision
High speed stretching of parachute and seat belts
• Weight reduction design of components

The INSTRON VHS machine complies with theLower testing standards

• High strain rate tensile: ISO 26203-2, ISO 18872
• SAE J2749
• Puncture impact: ASTM D3763, ISO 6603-2
Splitting test: ISO 11343

Why choose INSTRON？

Instron has over 20 years of experience in providing high strain rate testing machines, which has helped promote research on high strain rates for related materials and the development of new materials such as new metals, plastics, and composite materials. Instron continues to innovate and expand our high strain rate product line to accommodate a wider range of materials, applications, and more complex velocity models, providing advanced data acquisition and processing techniques to ensure the data integrity of test results. Our accumulated experience in high strain rate testing will ensure that you can obtain accurate and reliable test results at different strain rates, helping your material research, product design, and compliance with various testing standards.

INSTRON VHS

Instron offers a range of high strain rate testing machines capable of performing tests ranging from quasi-static to strain rates up to 1000/s, covering the needs of various materials and strain rates. From composite materials to metals, from high-strength alloys to polymer materials, there is always a VHS system that suits your materials and applications.
Equipped with our specially designed accessories, your sample will be tested when it reaches the target speed, rather than during the acceleration process. Our carefully selected actuator stroke will ensure sufficient effective stroke for sample testing. Our standard VHS machine can perform tests ranging from less than 1 mm/s to 20 m/s, with great flexibility in experimental setup and sample design to meet the vast majority of application requirements. We also have an option for the VHS 65/80 model that can reach 25 m/s, suitable for applications that require higher strain rate testing.

Product Features

Integrated solution for quasi-static testing up to 1000/s high strain rate testing
Stable transition and operation of the actuator between closed-loop (speed below 1 m/s) and open-loop (speed exceeding 1 m/s)
Our rack design has sufficient rigidity to ensure maximum actuator speed and to quickly stabilize the specimen during the loading phase
Our 300 mm stroke allows sufficient actuator acceleration and deceleration distance to meet the testing needs of most composite and metal materials. We also offer a 600 mm stroke system to correspond to larger elongation polymer materials, increasing the variety of materials that can be tested at high strain rates.

Multiple energy storage devices, high flow servo valve systems, and actuator combinations ensure sufficient flow output, reducing the speed drop during open-loop control loading of samples to a very low level
• Lightweight actuator design
-Short acceleration distance required to achieve testing speed
-Higher stiffness - reduces the impact of resonance noise on test data
Electronic interlocking protective cover ensures that the testing area cannot be accessed during testing, creating a safe laboratory environment
It can integrate a DIC non-contact strain measurement system and automatically resample DIC data to match machine data. DIC can measure high-speed strain or strain at high temperatures when strain gauges are not suitable.
• Integrate with high and low temperature environmental equipment to expand testing capabilities under non room temperature conditions

It is very important to choose suitable fixtures for materials and sample sizes. Instron has a range of tooling fixtures, including:

Sleeve type fixture
• Quick jaw clamp
Puncture fixtures that comply with ISO 6603-2 or ASTM D3763
• Compression fixtures, etc

Controller and software

The Instron VHS testing system is equipped with a dedicated VHS 8800MT controller, using the Instron high-speed testing software package to provide integrated experience and analysis functions. The VHS 8800 MT controller is suitable for various applications and complex speed models, providing high-speed data acquisition and statistical analysis and modeling tools for fast post-processing. The optional DIC system provides additional data and can be integrated into the VHS system, providing complete testing capabilities.

For more relevant information, please refer to Bluehill ® VHS Analysis Manual.

Safety first

The Instron VHS machine is capable of testing at speeds up to 25 m/s through controlled large capacity high-pressure hydraulic flow. Considering this, operator safety is our absolute priority in the design of these systems.

Interlocking safety covers can prevent operators from accidentally entering the testing area during the testing process
All critical safety components are equipped with dual hydraulic circuits, which comply with the relevant machinery directives of the European Union
The system has fully passed CE certification

Data processing, software, and camera integration

The test lasts only 3-10 ms (depending on the sample), and to meet this demanding requirement, the Instron high-speed testing software package provides data acquisition frequencies up to 60 MHz, advanced analytical capabilities, and data acquisition and analysis capabilities for high-speed strain gauges with bandwidths up to 200 kHz.

Quickly perform statistical analysis on multiple result files to shorten data post-processing time
Polynomial curve fitting brings convenience to theoretical modeling and simulation
DIC high-speed camera data acquisition and post-processing

Study various material generasex

Instron also offers a variety of testing related accessories, supporting different types of testing and usage conditions. We can also provide temperature chambers below 250 ° C or induction heating systems up to 1000 ° C.

Stretching fixtures include sleeve type and quick jaw type
Compression fixture with lateral force protection
• Puncture fixture with suitable load sensor

Rack specifications