Crack Protective Layered Architecture of Lead-Free Piezoelectric Energy Harvester in Bistable Configuration
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU137479" target="_blank" >RIV/00216305:26210/20:PU137479 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/1424-8220/20/20/5808" target="_blank" >https://www.mdpi.com/1424-8220/20/20/5808</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/s20205808" target="_blank" >10.3390/s20205808</a>
Alternative languages
Result language
angličtina
Original language name
Crack Protective Layered Architecture of Lead-Free Piezoelectric Energy Harvester in Bistable Configuration
Original language description
Kinetic piezoelectric energy harvesters are used to power up ultra-low power devices without batteries as an alternative and eco-friendly source of energy. This paper deals with a novel design of a lead-free multilayer energy harvester based on BaTiO3 ceramics. This material is very brittle and might be cracked in small amplitudes of oscillations. However, the main aim of our development is the design of a crack protective layered architecture that protects an energy harvesting device in very high amplitudes of oscillations. This architecture is described and optimized for chosen geometry and the resulted one degree of freedom coupled electromechanical model is derived. This model could be used in bistable configuration and the model is extended about the nonlinear stiffness produced by auxiliary magnets. The complex bistable vibration energy harvester is simulated to predict operation in a wide range of frequency excitation. It should demonstrate typical operation of designed beam and a stress intensity factor was calculated for layers. The whole system, without presence of cracks, was simulated with an excitation acceleration of amplitude up to 1g. The maximal obtained power was around 2 mW at the frequency around 40 Hz with a maximal tip displacement 7.5 mm. The maximal operating amplitude of this novel design was calculated around 10 mm which is 10-times higher than without protective layers.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21101 - Food and beverages
Result continuities
Project
<a href="/en/project/GA17-08153S" target="_blank" >GA17-08153S: Novel material architectures for SMART piezoceramic electromechanical converters</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
SENSORS
ISSN
1424-8220
e-ISSN
1424-3210
Volume of the periodical
20
Issue of the periodical within the volume
20
Country of publishing house
CH - SWITZERLAND
Number of pages
18
Pages from-to
1-18
UT code for WoS article
000585556900001
EID of the result in the Scopus database
2-s2.0-85092927038