TY - GEN
T1 - Pipe organ air-coupled broad bandwidth transducer
AU - Zhu, Botong
AU - Tiller, B.
AU - Windmill, James
AU - Mulholland, Anthony
AU - Walker, A.J.
PY - 2017/9/6
Y1 - 2017/9/6
N2 - Air-coupled transducers are used to conduct fast non-contact inspections in NDT. Normally, the bandwidth of a conventional transducer can be enhanced, but with a cost to its sensitivity. However, low sensitivity is very disadvantageous in air-coupled devices. This paper presents a methodology for improving the bandwidth of an air-coupled micro-machined ultrasonic transducer (MUT) without sensitivity loss by connecting a number of resonating pipes of various length to a cavity in the backplate. The design is inspired by the pipe organ musical instrument, where the resonant frequency (pitch) of each pipe is mainly determined by its length.
AB - Air-coupled transducers are used to conduct fast non-contact inspections in NDT. Normally, the bandwidth of a conventional transducer can be enhanced, but with a cost to its sensitivity. However, low sensitivity is very disadvantageous in air-coupled devices. This paper presents a methodology for improving the bandwidth of an air-coupled micro-machined ultrasonic transducer (MUT) without sensitivity loss by connecting a number of resonating pipes of various length to a cavity in the backplate. The design is inspired by the pipe organ musical instrument, where the resonant frequency (pitch) of each pipe is mainly determined by its length.
UR - https://pureportal-staging.strath.ac.uk/en/publications/9a70e05c-2dfd-43d8-a401-80580e6df7d0
M3 - Conference Contribution (Conference Proceeding)
BT - IEEE International Ultrasonics Symposium, Washington, United States, 6/09/17
ER -