@ARTICLE{Dunst2017,
  author = {Dunst, Paul AND Hemsel, Tobias AND Sextro, Walter},
  title = {Analysis of pipe vibration in an ultrasonic powder transportationsystem},
  journal = {elsevier},
  year = {2017},
  volume = {Sensors and Actuators A 263},
  pages = {733-736},
  abstract = {The transportation of dry fine powders is an emerging technologic
	task, as in biotechnology, pharmaceu-tical and coatings industry
	the particle sizes of processed powders get smaller and smaller.
	Fine powdersare primarily defined by the fact that adhesive and cohesive
	forces outweigh the weight forces, leadingto mostly unwanted agglomeration
	(clumping) and adhesion to surfaces. Thereby it gets more difficult
	touse conventional conveyor systems (e.g. pneumatic or vibratory
	conveyors) for transport. A rather newmethod for transporting these
	fine powders is based on ultrasonic vibrations, which are used to
	reducefriction between powder and substrate. Within this contribution
	an experimental set-up consisting of apipe, a solenoid actuator for
	axial vibration and an annular piezoelectric actuator for the high
	frequencyradial vibration of the pipe is described. Since amplitudes
	of the radial pipe vibration should be as large aspossible to get
	high effects of friction reduction, the pipe is excited to vibrate
	in resonance. To determinethe optimum excitation frequency and actuator
	position the vibration modes and resonance frequenciesof the pipe
	are calculated and measured. Results are in good accordance.},
  file = {Dunst2017.pdf:download\\Dunst2017.pdf:PDF},
  keywords = {Powder transport Piezoelectrics Ultrasonics Pipe vibration Finite
	element simulation Fine powder},
  owner = {ekubi},
  timestamp = {2017.11.06},
  url = {https://groups.uni-paderborn.de/ldm/publications/download/Dunst2017.pdf}
}