Abstract: Power semiconductor device condition monitoring technology based on the mechanical stress wave (MSW ... noncontact MSW measurement method based on a laser Doppler vibrometer for power ...

The following methods can be used to assess the biomechanical properties of tissue: shear wave elastography (SWE), magnetic resonance imaging (MRI), called magnetic resonance elastography (MRE), ...

Laser Doppler vibrometry is employed in this scenario to assess mechanical system performance because it ... A Polytec 3D Scanning Vibrometer measures the vibrations produced on the entire surface of ...

Fig. 1 depicts the experimental setup. The scanning vibrometer collected surface vibrations triggered by a tissue phantom with mechanical characteristics similar to human skin. This phantom was ...

who is also a mechanical engineer at the university, led tests of their sensitivities. They measured how the webs moved with a laser vibrometer and found that spider silk registered sounds between ...

Playing sound ranging from 1 Hz to 50 kHz for the spiders and measuring the spider silk motion with a laser vibrometer ... a professor of mechanical engineering. "Instead, these thin structures ...

The mechanical setup was an on the fly arrangement on a stable steel plate fixing the elements with little magnets. Surprisingly this worked quite well, with some math the observed signal coould be ...

Seck is using a custom-built vacuum system inside a commercial cryo cooler to cool the apparatus, but he needs to be able to quantify the vibration of the mechanical cooler. When Seck read about the ...

Before I get carried away with pin-point accuracy through mids, ear-level tweeters, and aerospace-grade enclosures, a quick bit of back history: in June 2020, Magico introduced its $750,000 M9 ...

There are several different switch types, but one of the most popular varieties you'll hear about is mechanical switches — particularly amongst the gaming community. Mechanical keyboards tend to ...

Mechanical vibrations could be used to compete ... In this video still, an instrument called a vibrometer (red dot) is recording the vibrational communication of a stinkbug (brown bug) in May ...