SYSTEM FOR DMA TESTING ON ELASTOMERS UP TO 1000 HZ
At STEP Lab, we have designed an advanced test system that reaches operating frequencies of up to 1000 Hz, thanks to its highly responsive electrodynamic actuation and extremely rigid design. This machine is used for the dynamic characterisation of elastomers (DMA tests) and for evaluating the vibroacoustic properties of motor mounts, bushings and shock absorbers (NVH tests).
Designed for research and development laboratories, the machine enables complex tests on elastomeric materials and components with precise force and displacement control under a wide range of operating conditions.
Main features
- Test frequency up to 1000 Hz
- DMA tests on elastomers and NVH noise tests
- High-performance electrodynamic actuation
- Dedicated software: automated DMA test management, frequency analysis and reporting
- High-stiffness structure: minimises parasitic vibrations and resonances in the useful band
- High-precision sensors: integrated load cells, accelerometers and displacement transducers
Applications
Using the DMA test system
The STEP Lab system for Dynamic Mechanical Analysis (DMA) allows the viscoelastic behaviour of elastomeric materials to be characterised by analysing how stiffness and energy dissipation vary with frequency, temperature and stress amplitude. Through frequency- or temperature-controlled sweeps, the machine measures the storage modulus (E’), loss modulus (E”) and damping factor (tan δ), providing essential information for compound development, material validation and dynamic performance optimisation. This analysis is crucial for predicting the behaviour of insulators, bushings and supports under real operating conditions.
Using the NVH test system
In the Noise, Vibration and Harshness (NVH) tests on shock absorbers, the system allows accurate analysis of the dynamic forces and vibrations generated during component operation, up to 1000 Hz. These tests allow us to assess how the shock absorber contributes to the transmission of vibrations and noise within the vehicle, particularly in high-frequency conditions associated with road irregularities or micro-bumps.
The machine makes it possible to measure vibrational transmissibility, system resonance, and the frequency dependence of the damping force, fundamental parameters for optimising acoustic comfort and NVH performance of the vehicle. The information obtained is essential for the design of quieter, more stable and comfortable suspensions, supporting the development of shock absorbers for cars, motorbikes and industrial vehicles.
UHFTS – Ultra High Frequency Test System
Common standards
The machine can be configured to perform tests in accordance with the main international standards for elastomers and dynamic analysis, including:
- ISO 4664,ISO 37, and related standards for dynamic mechanical tests.
- ASTM D5992 and standards for DMA and NVH on polymeric materials.
- OEM specifications and automotive protocols on request.
Advantages of the STEP Lab system
- Performance up to 1000 Hz: DMA analysis and NVH testing in one test bench.
- High flexibility: possibility to customise force, stroke, sensors and fixtures according to the type of test.
- Precision control: real-time acquisition and feedback for stable and repeatable results.
- Intuitive software: full management of sequences, graphs and automated analysis.
- Modular design: compatible with climate chambers, probenhalter and external measuring systems.
Contact STEP Lab
Want to find out more about our DMA and NVH test system? Contact us for any requests, detailed technical specifications, and customised configurations.
