Benefits of Using Laser Doppler Vibrometers against Accelerometers for the Manufacturing of White Goods

By exploiting the benefits of optical vibration testing – non-contact, no mass loading, measure hot or cold surfaces, measure rotating surfaces with a large and highly accurate frequency performance. As opposed to accelerometers, which are in common employment, with their included limitations – contact, calibration uncertainties, wires, performance limitations, difficulties in measuring rotating, hot or cold surfaces and potential ease to damage?

It is possible to improve the reliability and life time performance of components to do away with expensive and maintenance-intensive mechanical contacting sensors and positioning mechanisms.

Likewise, it is possible to automate the switching between different types of test items, as the laser measures from a safe distance irrespective of the surface or different tool carriers. Using QuickCheck software from Polytec, specially adapted to acoustic testing tasks, test procedures can be fully