The new generation of ultrasonic nondestructive testing
Air-coupled Phased-Array Ultrasound Inspection
Optimization of the value chain.
While air-coupled ultrasound testing methods have only been used in niche applications such as aerospace and aviation in recent decades, this testing method is becoming increasingly important nowadays.
This is primarily due to the possibility of testing without coupling and the associated benefits. Air-coupled ultrasonic testing is mainly used in process control in production chains and is perfectly suited for testing materials and structures composed of composites (laminates and sandwich structures), ceramics, concrete, glass, polymers (plastics), wood and metal. Thus, a wide range of inspection tasks e.g. interface detection, bonding characterization, inhomogeneity detection or the detection of internal discontinuities and inclusions can be covered.
In addition, impurities and damage to materials and test pieces are prevented in the production process, thus eliminating costly cleaning steps. Ultimately, this is accompanied by an increase in effectiveness and quality.
One step ahead.
For highly attenuating materials, the performance of the system is critical. The ultrasonic sensors, the scanning area and the system settings should be flexibly adapted to the test task and the material.
These high expectations are met with the new and modular testing system SONOAIR. With the world’s first air-coupled phased-array UT inspection system SONOAIR we developed a technology that works with up to 4 transmitter and receiver channels with freely configurable square wave burst transmitters as wells as low noise receiving amplifiers. By the help of e.g. SONOSCAN CF400-3E probes the inspection can be conducted closer to the material.
As a result of the smaller focus distance, an improvement in the lateral resolution and a clear gain in sensitivity are thus achieved.
With SONOTEC you are one step ahead.
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Made in Germany
Aviation & Aerospace
- Wind turbine construction
- Interface Detection
- Homogeneity Analysis
- Delamination Testing
- Bond Inspection
Materials, compounds and structures
Applications for air-coupled phased-array ultrasonic testing can be found in the automotive, aircraft, railway or wind power industry. Material Testing is carried out so far by transmission measurement (two-sided). SONOAIR enables also the so-called Pitch-Catch order (one-sided). Here, probes are not placed on different sides of the test object, but on the same side. However, this method is only suitable for certain measuring methods such as e.g. the sheet metal weld inspection.
In these sectors, modern composite materials such as glass or carbon fiber reinforced plastics (CFRP, GFRP and ceramics) are used, but many more can be tested with SONOAIR.
Thin metal sheets
Foam and foam composites
Honey comb structures
Extensive software for detailed presentation and evaluation of the measurement results
- Presentation of measurement results as A-, B-, C- or D-Scan
- Repositioning of measurement gates after the inspection
- Storage of complete A-Scans for every measurement point during the testing process (optional)
- Individual signal processing algorithms e.g. for filters (optional)
Detection of impact damage to CFRP plate
Delamination in honeycomb structure
Laminated timber (beech)
Laminated timber (beech) with different flaws
SONOTEC Logo in CFRP Plate
SONOSCAN CF Probes
The high performing SONOSCAN CF probes have been designed for couplant-free material testing. Due to their stainless steel housing the probes are extremely rugged and maintenance free. Currently the portfolio comprises frequencies from 50 to 400 kHz. In addition to these standard specifications customized probes with the following features can be realized as well:
- Outstanding acoustic characteristics
- Your technical requirements
- Reasonable price performance ratio
Of high attenuating materials
For flexible adaptation to the application
Due to the use of focusing transducers
for detailed presentation of measurement result
Evaluation of the measurement results
High resolution of A-/B-/C- or D-scans
SONOSCAN CF with robust stainless steel housing
We support you in after sales processes!
Together with the Research Center Ultrasound in Halle Saale we offer you trainings.
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