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Characterization of different types of high-performance THUNDER actuators
THUNDER technology introduces a versatile new family of rugged, robust, reliable piezoelectric actuators and sensors. Because of their pre-stressed composite structure, these powerful yet lightweight…
Evaluation criteria for THUNDER actuators
- K. Mossi, R. Bishop, Ralph C. Smith, H. Banks
- EngineeringSmart Structures
- 4 June 1999
THUNDERTM (thin-layer composite unimorph ferroelectric driver and sensor) represents a new class of piezoceramic- based actuators capable of generating significant displacements and forces in…
PERFORMANCE OF STEP-FEED ACTIVATED SLUDGE SYSTEMS WITH ANOXIC SELECTORS
- S. Clark, T. A. Krumsick, R. Bishop, G. Daigger, C. Linder
- Engineering
- 2001
High displacement, high force piezoelectric actuator and sensor
A piezoelectric actuator and sensor which develops unusually high forces and displacements, and which is very rugged and durable, was invented by NASA at the Langley Research Center, Hampton,…
Development of a sorbent distribution and recovery system. Final report
This report describes the design, fabrication, and test of a prototype system for the recovery of spilled oil from the surface of river, estuarine, and harbor waters. The system utilizes an open cell…
Acoustically matched concrete finishing pans
- J. D. Allen, R. Bishop
- Materials Science
- 2007
Pans for power finishing freshly placed concrete in which the acoustic impedance of the treating equipment is made substantially equal to the acoustic impedance of the concrete slab being treated.…
DEVELOPMENT OF A HIGH SEAS OIL RECOVERY SYSTEM. APPENDIX II
- F. March, R. Beach, R. Bishop, T. N. Blockwick, R. K. Sahgal
- Engineering
- 1 February 1972
A model test development program was conducted of a double weir oil recovery system for rapid recovery of oil spilled on the high seas. In this appendix a detailed discussion of three-dimensional…
Circuit d'excitation de lampe fluorescente muni d'un transformateur acoustique piezoelectrique multicouches et procedes associes
- R. Bishop, C. D. Boyd
- Physics
- 8 October 1999
L'invention concerne des circuits d'excitation de lampe fluorescente, qui utilisent un transformateur piezoelectrique a resonance et des composants de circuits complementaires pour convertir…
Upgrading Aerated Lagoon Effluent with Inntermittent Sand Filtration
- R. Bishop, J. H. Reynolds, D. Filip, E. Middlebrooks
- Engineering
- 1977
Intermittent sand filtration was evaluated as a means of upgrading the quality of aerated lagoon effluents to satisfy the requirements of PL 92-500. The aerated lagoon in question treats the wastes…
DEVELOPMENT OF AN EXPERT SYSTEM FOR SELECTION OF FLOOD FORECASTING METHODS
- R. Bishop, W. E. Watt
- Computer Science
- 1989
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