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Bad vibes picked up from leaky spacecraft

发布时间:2019-03-02 01:15:06来源:未知点击:

IT’S a trick familiar to all cellphone users: if you won’t be able to hear your phone ring, switch it to vibrate as well. Now this approach could help astronauts pinpoint potentially catastrophic air leaks aboard spacecraft. Researchers at the Center for Nondestructive Evaluation at Iowa State University in Ames have developed a sensor that can detect ultrasonic vibrations caused by air leaks in walls. As air leaks out, the slight vibration of the spacecraft’s skin is converted by the piezoelectric sensors into an electrical signal that can be amplified and analysed. Today,