Resonance-based material testing with precision and speed
GrindoSonic® MK7 enables fast and reliable assessment of properties such as elastic modulus, shear modulus, and damping – regardless of the sample’s shape and size. Thanks to its intuitive software and flexible application options, the MK7 is ideally suited for use in industry, research, and quality assurance.
Non-contact. Fast. Insightful.
The GrindoSonic® MK7 is the core of non-contact material testing using impulse excitation – a technology that combines highest precision with impressive speed. With just a single tap, the test piece is set into vibration. The resulting resonance frequencies and damping values reveal everything about the material’s elastic properties: Elastic modulus, shear modulus, Poisson’s ratio, damping, porosity, and more.
This method – known as the Impulse Excitation Technique (IET) – is standardized internationally (e.g., ASTM E1876, C1259, C215) and enables fully automatable, non-destructive testing from the laboratory to the production line.
Testing technology that makes a difference
Whether in materials development, microcrack detection, or end-of-line quality control – the GrindoSonic® MK7 impresses with fast results, high repeatability, and intuitive operation. It sets new standards in quality assurance and material research – entirely without destroying the test specimen.
Core Technology: Impulse Excitation
One precise tap is all it takes: the sample begins to resonate, and the system analyzes frequency and damping – non-contact, reproducible, and compliant with standards. The collected data enables not only the assessment of material states but also the early detection of aging, damage, or production deviations.
Your benefits
- Non-destructive testing – Based on impulse excitation and resonance analysis
- Broad material applicability – Suitable for metals, ceramics, polymers, composites, etc.
- Highest accuracy – System accuracy better than 0.005%
- Very high resolution – Measurement resolution down to 0.1 ppm
- Automatable & inline-capable – Can be integrated into production lines with >1000 tests/hour
- High-temperature capability – Measurements possible up to 1600 °C
- Early defect detection – Capable of identifying microcracks and property changes at an early stage
About GrindoSonic
GrindoSonic is an internationally established company specializing in non-destructive materials testing using resonance analysis. For over 40 years, GrindoSonic has provided precise and reliable testing systems for the rapid determination of mechanical material properties such as elastic modulus and damping. Customers worldwide from aerospace, automotive, and research sectors trust the quality and versatility of GrindoSonic technology.
Technical Data
| Frequency range: | 20 Hz – 150 kHz |
| Frequency filter bands: | 8 × 8th order band pass analog filters 4 × programmable digital filters |
| System accuracy: | Absolut accuracy greater than 0,005 % |
| Measurement resolution: | 1/10.000.000 (0,1 ppm) |
| System repeatability: | 3/10.000.000 (0,3 ppm) |
| Sample frequency: | 10 kHz – 1 MHz |
| Number of samples: | 1k - 524k |
| Display: | 7-inch multicolor touch screen |
| Data storage: | 10 GB (optional up to 58 GB), stored as .csv files |
| Network connection : | Ethernet cable |
| Power supply: | 100–240 VAC / 50–60 Hz / max. 42 W |
| Protection classification: | IP 50 |