Details
| Original language | English |
|---|---|
| Pages (from-to) | 378-380 |
| Number of pages | 3 |
| Journal | Materials chemistry and physics |
| Volume | 90 |
| Issue number | 2-3 |
| Publication status | Published - 15 Apr 2005 |
| Externally published | Yes |
Abstract
The transport and dosage of granular materials are an important part of Process Engineering. Thereby, the food, chemical, pharmaceutical and coating industries set high demands on the transport and dosage performances of the used plants. In this context, Ultrasound Process Technology in the past years has developed itself into an attractive alternative compared to presently used classical technologies. This paper describes the application of ultrasonic progressive waves in a powder-feeding device. The use of a specific pipe material with appropriate damping characteristics allows to generate a progressive wave using a single piezoelectric actuator. Small objects can be carried along the surface of a pipe by the elliptic motion at the surface, which is the result of a flexural progressive wave. The operational principle is the same as in travelling wave ultrasonic motors. It was experimentally confirmed that the device can be used for feeding and supplying small amounts of powder. The powder-fed performance, however, strongly depends on environmental conditions, so that a control of the system is required. Construction and characteristics of a trial device are shown.
Keywords
- Piezoelectric, Powder transport, Travelling wave, Ultrasonic, Vibration
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Materials chemistry and physics, Vol. 90, No. 2-3, 15.04.2005, p. 378-380.
Research output: Contribution to journal › Review article › Research › peer review
}
TY - JOUR
T1 - A system for powder transport based on piezoelectrically excited ultrasonic progressive waves
AU - Mracek, M.
AU - Wallaschek, J.
N1 - Funding Information: The authors would like to acknowledge the support by the Heinz Nixdorf Institute, Paderborn. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/4/15
Y1 - 2005/4/15
N2 - The transport and dosage of granular materials are an important part of Process Engineering. Thereby, the food, chemical, pharmaceutical and coating industries set high demands on the transport and dosage performances of the used plants. In this context, Ultrasound Process Technology in the past years has developed itself into an attractive alternative compared to presently used classical technologies. This paper describes the application of ultrasonic progressive waves in a powder-feeding device. The use of a specific pipe material with appropriate damping characteristics allows to generate a progressive wave using a single piezoelectric actuator. Small objects can be carried along the surface of a pipe by the elliptic motion at the surface, which is the result of a flexural progressive wave. The operational principle is the same as in travelling wave ultrasonic motors. It was experimentally confirmed that the device can be used for feeding and supplying small amounts of powder. The powder-fed performance, however, strongly depends on environmental conditions, so that a control of the system is required. Construction and characteristics of a trial device are shown.
AB - The transport and dosage of granular materials are an important part of Process Engineering. Thereby, the food, chemical, pharmaceutical and coating industries set high demands on the transport and dosage performances of the used plants. In this context, Ultrasound Process Technology in the past years has developed itself into an attractive alternative compared to presently used classical technologies. This paper describes the application of ultrasonic progressive waves in a powder-feeding device. The use of a specific pipe material with appropriate damping characteristics allows to generate a progressive wave using a single piezoelectric actuator. Small objects can be carried along the surface of a pipe by the elliptic motion at the surface, which is the result of a flexural progressive wave. The operational principle is the same as in travelling wave ultrasonic motors. It was experimentally confirmed that the device can be used for feeding and supplying small amounts of powder. The powder-fed performance, however, strongly depends on environmental conditions, so that a control of the system is required. Construction and characteristics of a trial device are shown.
KW - Piezoelectric
KW - Powder transport
KW - Travelling wave
KW - Ultrasonic
KW - Vibration
UR - http://www.scopus.com/inward/record.url?scp=13144261772&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2004.09.048
DO - 10.1016/j.matchemphys.2004.09.048
M3 - Review article
AN - SCOPUS:13144261772
VL - 90
SP - 378
EP - 380
JO - Materials chemistry and physics
JF - Materials chemistry and physics
SN - 0254-0584
IS - 2-3
ER -