Dynamics of a vibrational energy harvester with a bistable beam: voltage response identification by multiscale entropy and “0-1” test

Harris, Peter; Bowen, Chris R.; Kim, Hyunsun; Litak, Grzegorz

doi:10.1140/epjp/i2016-16109-4

Cited by 27 publications

(14 citation statements)

References 49 publications

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“…The main motivation toward the development of new materials for the aviation industry is the reduction of aircraft weight, extending the time of reliable operation of the parts, improving fuel efficiency, and thus reducing aircraft operating costs [12][13][14]. These materials can be found in both internal and external aircraft constructions; in internal structures (secondary structures), they include cabins, floorboards, or armchairs, but it is the external (primary) structures that constitute the main market for composite aviation materials.…”

Section: Polymer Composites Used In Aviationmentioning

confidence: 99%

Selected Tribological Properties and Vibrations in the Base Resonance Zone of the Polymer Composite Used in the Aviation Industry

Krzyżak¹,

Kosicka

Borowiec

et al. 2020

Materials

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The revolution in the global market of composite materials is evidenced by their increasing use in such segments as the transport, aviation, and wind industries. The innovative aspect of this research is the methodology approach, based on the simultaneous analysis of mechanical and tribological loads of composite materials, which are intended for practical use in the construction of aviation parts. Simultaneously, the methodology allows the composition of the composites used in aviation to be optimized. Therefore, the presented tests show the undefined properties of the new material, which are necessary for verification at the application stage. They are also a starting point for further research planned by the authors related to the improvement of the tribological properties of this material. In this article, the selected mechanical and tribological properties of an aviation polymer composite are investigated with the matrix of L285-cured hardener H286 and six reinforcement layers of carbon fabric GG 280P/T. The structure of a polymer composite has a significant influence on its mechanical properties; thus, a tribological analysis in the context of abrasive wear in reciprocating the movement for the specified polymer composite was performed. Moreover, the research was expanded to dynamic analysis for the discussed composite. This is crucial knowledge of material dynamics in the context of aviation design for the conditions of resonance vibrations. For this reason, experimental dynamical investigations were performed to determine the basic resonance of the material and its dynamics behavior response. The research confirmed the assumed hypotheses related to the abrasive wear process for the newly developed material, as well as reporting an empirical evaluation of the dependencies of the resonance zone from the fabric orientation sets.

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Section: Polymer Composites Used In Aviationmentioning

confidence: 99%

Selected Tribological Properties and Vibrations in the Base Resonance Zone of the Polymer Composite Used in the Aviation Industry

Krzyżak¹,

Kosicka

Borowiec

et al. 2020

Materials

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“…The piezoelectric elements will obtain large strain and produce high electric power if the piezoelectric elements are attached to the surface of bi-stable laminate. Compared to using magnetic mechanism, this bi-stable energy harvester has four main advantages: (1) the arrangement can be designed to occupy a smaller space; (2) there are no magnetic fields; (3) the laminate can be easily combined with piezoelectric materials; (4) there is potential to control over harvester response through adjusting lay-up and geometry [19].…”

Section: Bi-stable Composite Laminatementioning

confidence: 99%

“…The results showed that the bi-stable harvester had higher power output over a broader range of frequencies at low frequency and low excitation and the linear one had the potential to produce a higher peak power but at a narrow bandwidth. In 2016, Harris et al [19] continued their work and investigated the dynamics of this bi-stable energy harvester by multiscale entropy and "0-1" test. As before, these oscillation modes including single-well oscillation, periodic and chaotic intermittent snap-through and continuous periodic snap-through were captured in experiments.…”

Section: Energy Harvestingmentioning

confidence: 99%

Piezoelectric Energy Harvesting Based on Bi-Stable Composite Laminate

Dai¹,

Pan²

2018

Energy Harvesting

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Energy harvesting employing nonlinear systems offers considerable advantages comparing to linear systems in the field of broadband energy harvesting. Bi-stable piezoelectric energy harvesters have been proved to be a good candidate for broadband frequency harvesting due to their highly geometrically nonlinear response during vibrations. These bi-stable energy harvesters consist of bi-stable structure and piezoelectric transducers. The nonlinear response depends on the host bi-stable structure. A possible category of bistable structures is bi-stable composite laminate, which has two stable equilibrium states resulting from the mismatch in thermal expansion coefficients between plies. It has received considerable interest in deformable structure since the "snap-through" between two stable states results in a significant deformation without continuous energy supply. Combining piezoelectric transducer and the bi-stable composite laminate is a feasible method to obtain bi-stable energy harvester. Piezoelectric energy harvesters based on bistable composite laminate have been shown to exhibit high levels of power output over a wide range of frequencies. This chapter aims to summarize and review the various approaches in piezoelectric energy harvesting based on bi-stable composite laminates.

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“…Not only does the harvester need to match the ambient vibrations, but also the input energy should be transmitted to the piezoelectric material as efficiently as possible. This is especially the case where the ambient vibration energy is limited and the harvesting mechanism could potentially have a major influence on the vibration source itself [16,17]. This situation demands a high efficiency of transformation of the mechanical vibration energy into electrical energy.…”

Section: Introductionmentioning

confidence: 99%

The effects of substrate layer thickness on piezoelectric vibration energy harvesting with a bimorph type cantilever

Palosaari

Leinonen

Juuti

et al. 2018

Mechanical Systems and Signal Processing

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Highlights  Four piezoelectric bimorph type cantilevers for vibration energy harvesting were manufactured.  The cantilevers had the same dimensions, but had different thicknesses of the steel substrate (no steel, 30 µm, 50 µm and 75 µm). and were tuned to the same resonance frequency with different sizes of tip mass (2.13 g, 3.84 g, 4.17 g and 5.08 g).  The results showed that the harvested energy was similar between the samples except for the one with no passive steel layer  30 µm steel layer bimorph was the most efficient and required less ambient mechanical energy to produce the same harvested electrical energy.  The highest average power of 8.74 mW was recorded under 2.5 g-force at a resonance frequency of 35 Hz from the cantilever with the 30 µm steel.

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Dynamics of a vibrational energy harvester with a bistable beam: voltage response identification by multiscale entropy and “0-1” test

Cited by 27 publications

References 49 publications

Selected Tribological Properties and Vibrations in the Base Resonance Zone of the Polymer Composite Used in the Aviation Industry

Selected Tribological Properties and Vibrations in the Base Resonance Zone of the Polymer Composite Used in the Aviation Industry

Piezoelectric Energy Harvesting Based on Bi-Stable Composite Laminate

The effects of substrate layer thickness on piezoelectric vibration energy harvesting with a bimorph type cantilever

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