To content
ACOUSTIC SENSORS & TESTING SOLUTIONS

End-Of-Line & Acoustic Quality Control

Traditional End-Of-Line (EOL) testing solutions often encounter difficulties adapting from controlled environments to industrial production lines due the presence of high levels of noise and vibrations generated by the surrounding machinery. In contrast, particle velocity measurements performed near a rigid radiating surface are less affected by background noise and they can potentially be used to address noise problems even in such conditions. The vector nature of particle velocity, an intrinsic dependency upon surface displacement and sensor directivity are the main advantages over conventional solutions. As a result, quantitative measurements describing the vibro-acoustic behavior of a device can be performed at the final stage of the manufacturing process.

APPLICATIONS

  • Classification of multiple defects
  • Unbalance detection
  • Vibro-acoustic End-Of-Line tests
  • Psycho-acoustic Testing
  • Rotating machinery
  • Leak testing
  • Sound source separation

Detecting defects and anomalies with an acoustic quality check

Manufacturing a complex device often results in a vibro-acoustic signature that can vary significantly from one device to another. Practically every aspect of the manufacturing process will affect the sound and vibration response: from component tolerances to small changes in materials composition. In addition, OEMs may add additional requirements which may not necessarily indicate that a device is faulty, but just that “it does not sound good”. In order to ensure the end-customer satisfaction, our end of line testing solution AQCURA incorporates advanced AI/ML signal processing routines to detect any potential anomalies.

Suitable for testing in facilities with high background noise levels

Mitigating broadband noise usually involves large structures and/or costly acoustic enclosures. In contrast, the use of particle velocity sensors near a high impedance surface can benefit from its vector nature, presenting a series of advantages over traditional pressure microphones. Incoming and reflected sound waves are perceived with opposite phase, yielding low velocity levels near the boundary. This effect allows to perform quality control tests for low and mid-frequency problems even without any enclosure.

Experts in EOL acoustic quality control

Microflown Technologies has 25+ years of experience in acoustic sensor technology and providing unique solutions for vibro-acoustic testing. Ensuring daily used products such as dishwashers or washing machines are silent during operation, increasing our comfort. Core of the company is the so-called Microflown sensor, the first sensor in the world that allows to directly measure particle velocity as a physical quantity. The Microflown sensor already proved its differentiating capabilities in the end-of-line quality control testing. With 10+ years experience in this market, it was time to take the next step and launch in AQCURA a total hard- & software package for end-of-line quality control testing with the highest accuracy.

  • 2560px Dyson logo svg
  • Logo Electrolux 100
  • Logo Trw 100
  • 2560px Logo Mahle

Would you like to know more about our End-Of-Line acoustic testing solutions?

ACOUSTIC SENSORS & TESTING SOLUTIONS