Hardness Testing in A Non-Destructive Manner – QASS µmagnetic

After years of development we have realized QASS µmagnetic, a completely new micromagnetic measuring concept for non-destructive hardness testing. We utilize the Barkhausen noise, that is known for decades, which means ongoing interaction ferromagnetic materials by using an external magnetic field. This is combined with very high sampling rates and our real-time spectral analysis.

Determine the hardness of your purchased materials and conduct a reliable Positive Material Identification. Analyse non-destructively the hardness condition of ferromagnetic components and materials with QASS µmagnetic. Due to the one-time calibration of the QASS µmagnetic to your materials, a reference condition is set whereby the hardness can be shown in Rockwell, Brinell or Vickers.

Verifiable: Non-Destructive Hardness Testing – Also Contactless

QASS µmagnetic measures via direct contact or even with an air gap between sensor and component. The QASS software compensates known distances, which could influence measuring values.

Thereby we are able to detect the hardness of ferro-magnetic materials even under noisy and unsettled conditions. The detailed analysis is shown in a transparent 3D-landscape with the axes frequency, time and amplitude. The numbered result is user-friendly visualized as a single value. The measurement system enables a contact-less hardness measurement in real-time, directly on the component and under production conditions.

A measurement on parts that move during production is possible, for example, when rotations or linear movements are used. The new sensors by QASS can be customized to the customer’s needs and processes. Contact us – we will find a solution.

Advantage: Analysis In Three Dimensions

Different hardness means different signal amplitudes. QASS µmagnetic makes the material properties visible in real-time. Hardness values can be read from the data after in-depth calibration. The user has the option to adjust the tolerance thresholds in the Analyzer4D-software by himself. This is shown as a determined hardness value on the measurement system. As soon as this value is undercut or exceeded, the material is assessed as faulty.

Cognitive Measurement

QASS µmagnetic is able to process millions of sensor samples per second, with the help of advanced big data algorithms and the QASS spectral analysis – all in real-time. Cognitive measurement means understanding: Adapted to your process, the system recognizes on its own when the production exceeds tolerance thresholds. When a threshold is exceeded a signal lamp can light up, or the system immediately sends a signal to the machine. The system can easily be retrofitted into existing production chains.

Pre-, In- And Post-Process Measurement

Measure the mechanical parameters of your test specimen. The measurement results are displayed live. All application options of QASS µmagnetic are possible upstream, in-process, and downstream. Test your components and materials non-destructively and contactless. The technical feasibility in a process depends on the available space and process control.

Reasons For QASS µmagnetic:

• Quality assurance in-process
• Inspection of quality of received materials (test of mixed-up components)
• End-of-line testing of products (test certificates possible)
• Calculation of hardness values (Hardness measurement with value in Brinell, Rockwell, or Vickers)
• Determination of hardness curves (e. g. to detect grinding burn or to evalute welding seams)
• Non-destructive
• Optional contactless
• Automation possible with the QASS QOBOT handling system
• In real-time
• Cognitive Measuring
• Technological advantage
• Comprehensive visualization of complex measurement results
• Reduction of costs and time
• 100 % testing instead of sample testing
• Combinable with the Optimizer4D-technology for a high-end prozess analysis

Big Potential: QASS µmagnetic Can Do More

We will continue to make QASS µmagnetic even better in the future. Current and future systems can generally continuously be upgraded to the latest version and new functions are added. Currently, we are working on following projects:

• Testing of inherent stress conditions
• Testing of the hardening depth
• Identification of the grain size distribution