06:21 Mar-12-2003 Ed Ginzel R & D, - Materials Research Institute, Canada, Joined Nov 1998 1208
Re: Wave spreading at various frequencies in piezo strips You are correct in assuming this is a diffraction effect. go to this website for a better explantion;
: I am currently involved in a project investigating simple transducer arrays, where the transducers are merely strips of peizo electric material. . : At lower frequencies the longditudinal waves spread out more increasing the range of the array, at higher frequencys the scan is more focused. . : My question is why? Is it due to simple diffraction from the surface of the strip? .