I don't mind your thinking slowly, I mind your publishing faster than
you think. Wolfgang Pauli (1900-1958) Technologies that use high
frequency (ultrasonic) vibration to intensify processes are gaining wide
recognition in scienti?c and industrial envir- ments. By superimposing
high frequency vibration, the basic mechanical - haviour of many
processesand materialsis seen to be transformed.This leads to the
developmentof newmachines and processeswith advancedcharacter- tics.
Despite the fact that ultrasonic technology has been employed for many
years, there is no generalised understanding of ultrasonic machines and
p- cesses.Theirdesignanddevelopmenthasmainlybeenachievedusingheuristic
methods based on linear acoustical considerations. This book is intended
to bridge the gap between the theory and prac- cal use of ultrasonic
technology. It presents generalised foundations for the dynamics and
control of ultrasonic processing systems. The main concept presented is
to consider ultrasonic systems as special kinds of vibratory - chines
that function by exploiting nonlinear dynamic processes. This assumes
coupled considerations between the ultrasonic vibration's in?uence on
the processes, and the consequence of the transformed processing loads
on the excitation and control of the working tools' vibration. Analysis
is conducted in a uni?ed manner and is based on structural and frequency
methods that have become well established in engineering practice. These
methods are adjusted by the authors for the application to nonlinear
ultrasonic systems.
