Results 161 to 170 of about 22,792 (197)
Some of the next articles are maybe not open access.
Piezomechanics characteristics study of piezoelectric stack actuator
Materials Research Innovations, 2014This paper presents the design, implementation and experiments of piezoelectric stack actuator under simulating operating conditions. The piezomechanical characteristics are investigated including hysteresis of displacement, creep, stiffness and force generated.
K. Zheng, X. H. Dong, X. Tian
openaire +1 more source
Characterization of Piezoelectric Stacks for Space Applications
Earth & Space 2008, 2008Future NASA missions are increasingly seeking to actuate mechanisms to precision levels in the nanometer range and below. Co-fired multilayer piezoelectric stacks offer the required actuation precision that is needed for such mechanisms. To obtain performance statistics and determine reliability for extended use, sets of commercial PZT stacks were ...
Stewart Sherrit +6 more
openaire +1 more source
Inter-element mounting for stacked piezoelectric transducers
The Journal of the Acoustical Society of America, 1992In a preferred embodiment, an inter-element mounting for ceramic elements in a piezoelectric transducer stack, which mounting includes two metal plates disposed between adjacent surfaces of the ceramic elements. The metal-plates are cantilevered with respect to the surfaces of the ceramic elements, such that a substantial portion of the areas of the ...
openaire +1 more source
Composite piezoelectric spinal fusion implant: Effects of stacked generators
Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2015AbstractSpinal fusion surgeries have a high failure rate for difficult‐to‐fuse patients. A piezoelectric spinal fusion implant was developed to overcome the issues with other adjunct therapies. Stacked generators were used to improve power generation at low electrical load resistances.
Nathan C, Goetzinger +4 more
openaire +2 more sources
A multi-piezoelectric structure: the stacked transducer
IEEE 1991 Ultrasonics Symposium, 2002A new piezoelectric structure made of several ceramic plates stacked together is proposed. With such an arrangement a gain in sensitivity can be obtained via constructive addition of the different ceramic signals appropriately delayed. Conversely, a reduction of the pulse duration can be achieved with destructive interference.
L. Chofflet, M. Fink
openaire +1 more source
Development of a piezoelectric proton exchange membrane fuel cell stack (PZT-Stack)
Journal of Power Sources, 2013Abstract Previous studies report that bi-cell piezoelectric proton exchange membrane fuel cells with a nozzle and a diffuser have been successfully developed, and this pseudo-bipolar design is expected to benefit the future development of the piezoelectric stack (PZT-Stack). In this study, an innovative PZT-Stack design composed of three L-PZT-D-type
H.K. Ma +4 more
openaire +1 more source
Review of Scientific Instruments, 2016
For the piezo-driven microgripper, one issue is to enlarge the grasping stroke and realize parallel grasping movement in the compact design. Piezoelectric stack actuator (PSA) and piezoelectric cantilever actuator (PCA) are two kinds of typical piezoelectric actuators. In this study, a novel microgripper hybrid driven by a PSA and two PCAs is proposed,
Weilin, Chen +2 more
openaire +2 more sources
For the piezo-driven microgripper, one issue is to enlarge the grasping stroke and realize parallel grasping movement in the compact design. Piezoelectric stack actuator (PSA) and piezoelectric cantilever actuator (PCA) are two kinds of typical piezoelectric actuators. In this study, a novel microgripper hybrid driven by a PSA and two PCAs is proposed,
Weilin, Chen +2 more
openaire +2 more sources
Modeling for Piezoelectric Stacks in Series and Parallel
2013 Third International Conference on Intelligent System Design and Engineering Applications, 2013Piezoelectric energy harvesting is a new type technology of green energy. To increase energy harvesting efficiency from below frequencies, which exist mostly in ambient, the piezoelectric stack assembled electrically in series and parallel is used as the energy harvester.
Chunhua Sun +4 more
openaire +1 more source
Sling-shot buckling in stacked piezoelectric structures
2014A stacked structure consisting of two beam-plates, each being a different piezoelectric material, subject to a uniformly increasing electric field is analyzed. One beam-plate is perfectly adhered over the central portion of the other. We consider the limiting boundary conditions for the bottom layer, the baseplate: clamped-fixed and hinged-fixed ...
openaire +1 more source
Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly