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269 views
04:55 Sep-27-2001

w_yi

R & D
Nang Yang Technological University,
Singapore,
Joined Sep 2001
1
Help! How to design air ultrasonic transducer

Dear colleagues
Our project need to design air ultrasonic transducer( 50KHz, wide bandwidth). But I do not have experience of it. So need your help.
Do you know any book introduce the principle of making transducer and step by step teaching how to make a PZT transducer?
Or any material about it that can be download from web-site?

Thanks
Wang Yi


 
03:58 Oct-01-2001
Dipl.-Ing. Martin Heinz
Re: Help! How to design air ultrasonic transducer : Dear colleagues
: Our project need to design air ultrasonic transducer( 50KHz, wide bandwidth). But I do not have experience of it. So need your help.
: Do you know any book introduce the principle of making transducer and step by step teaching how to make a PZT transducer?
: Or any material about it that can be download from web-site?
.
: Thanks
: Wang Yi

Dear Mr. Wang Yi,
at our page http://www.ibmt.fhg.de/ibmt3sensorfertigungsheets_e.html you will get some information about our range of high-bandwidth airborne ultrasonic transducers. If you will build up airborne transducers based on PZT you will receive either an high-sensitive smallband transducers (when the piezoceramic is used in banding mode) or a very insensitive broadband transducers with high electric impedance (when the piezoceramic is used in thickness mode and it is highly damped). Only whith specialized designs you can reach a sensitive AND broadband PZT-transducer.
Alternative technologies are using piezocomposite materials or using the electrostatic principle (POLAROID-transducer).
Our broadband PZT transducers are based on several special patents, thus we could offer you a project for matching this technology to the desired frequency of 50 kHz (which bandwidth do you need?).
For basic informations on ultrasonic transducer design see the standard book "Material Testing by Ultrasound" of Krautkrämer (Krautkramer).

Best regards,

Dipl.-Ing. Martin Heinz.



 


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