End of line control
Acoustic end of line control
Testing a manufactured unit at the end of the assembly line is a critical step in the production process. Any defective products must be separated from the functional units. Reliable detection of defective units is the primary objective of any End of Line tests. Maximizing the output and minimizing the false rejection rate is the ultimate goal of Microflown End of Line control applications.
Each product has its own unique vibro-acoustic behaviour pattern. Hidden within that pattern is crucial information regarding the functioning and condition of the product itself, as well as the manufacturing process that created it. The ability take advantage such information can significantly reduce manufacturing costs as well as the number of faulty products coming of the production line. Moreover, the non-destructive nature of acoustic End of Line testing procedures enables their direct implementation on the production line itself.
Up till now numerous acoustic quality control procedures were encumbered by the physical properties of pressure microphones used in the control process. Acoustically sealed rooms, anechoic chambers, all require substantial resources and complicated measurement routines. With Microflown particle velocity sensor you can forget about these arrangements! Moreover, the Microflown sensor can be used for acceleration measurements. This feature makes it a perfect alternative for existing accelerometer based End of Line control procedures.
Microflown – End of line solutions
Microflown particle velocity probes provide the cutting edge in the field of acoustic end of line control. With Microflown particle velocity probes, products can be tested directly in the manufacturing environment without the need of removing them from the production line. Compared to traditional microphones the Microflown probes have a nearly 40dB lower susceptibility to background noises and reflections. Furthermore the method is a non-contact method so there are no mass load effects or difficulties that occur when mounting the sensor.
Not only a ground breaking sensor but the combination of it with the knowledge and experience of our top engineers make it possible to deliver a complete end to end solution for any End Of Line control application. From product analysis, testing procedure design up to production line implementation. Microflown is capable of providing a customized solution which meets your expectations.
- Low susceptibility to background noise and reflection
Integration possible in production line ( manufacturing environment )
- Non contact method
- Acoustic particle velocity for fault detection of rotating machinery using tachless order analysis (PDF)
Published at the Internoise 2015, Graciano Carrillo Pousa, Dani Fernandez Comesana, Jaime Wild
- Low sound level source path contribution on a HVAC (PDF)
Published at the SAE NVH 2008, H-E de Bree, T. Basten
- A particle velocity sensor to measure the sound from a structure in the presence of background noise (PDF)
Published at the Forum Acousticum 2005, HE de Bree, W.F. Druyvesteyn
- Fault detection system using acoustic particle velocity innoisy environments based on kurtosis (PDF) Published at the ICSV11, 2004, Hans-Elias de Bree
- The very near field; theory, simulations and measurements (PDF)
Published at the ICSV11, 2004, Hans-Elias de Bree
- Chapter 17: EOL Gears (PDF)
- Automotive & Ground Vehicles
- Appliances & Electronics
- Aerospace & Aviation
- End of line control
- Room Acoustics
- Environmental Noise
- MEMS Testing
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