Effect of negative Poisson's ratio architecture on fatigue life and output power of flexible wearable thermoelectric generators

Y. J. Cui; C. Liu; K. F. Wang; B. L. Wang; Y. Liu

doi:10.1016/j.engfracmech.2023.109142

Effect of negative Poisson's ratio architecture on fatigue life and output power of flexible wearable thermoelectric generators

Y. J. Cui, C. Liu, K. F. Wang, B. L. Wang, Y. Liu

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The negative Poisson's ratio (NPR) structure is the typical metamaterial structure that has excellent mechanical performances and other functional properties. This paper employs the NPR structure to improve the fracture resistance and flexibility of the wearable thermoelectric generator (TEG). The analytical models of the fatigue life and power output of the NPR-TEG for powering the wearable electronics are proposed. Effect of the wearing position of the generator on the human body on the fatigue life is evaluated. It is found that the fatigue life of the traditional TEG is greatly enhanced by employing the NPR structure. Fatigue life of the NPR-TEG decreases with the thickness of the cell wall and the angle. The relative fatigue life between the NPR-TEG and the traditional TEG hardly varies with the wearing position of human body. The power output of the NPR-TEG is inversely linear proportional to length and number of the fatigue crack. The obtained results can be used to optimize and predict the fatigue life of the flexible wearable thermoelectric devices.

Original language	English
Article number	109142
Journal	Engineering Fracture Mechanics
Volume	281
DOIs	https://doi.org/10.1016/j.engfracmech.2023.109142
Publication status	Published - 28 Mar 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

Fatigue life
Negative Poisson's ratio, Thermoelectric material
Power output

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10.1016/j.engfracmech.2023.109142

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title = "Effect of negative Poisson's ratio architecture on fatigue life and output power of flexible wearable thermoelectric generators",

abstract = "The negative Poisson's ratio (NPR) structure is the typical metamaterial structure that has excellent mechanical performances and other functional properties. This paper employs the NPR structure to improve the fracture resistance and flexibility of the wearable thermoelectric generator (TEG). The analytical models of the fatigue life and power output of the NPR-TEG for powering the wearable electronics are proposed. Effect of the wearing position of the generator on the human body on the fatigue life is evaluated. It is found that the fatigue life of the traditional TEG is greatly enhanced by employing the NPR structure. Fatigue life of the NPR-TEG decreases with the thickness of the cell wall and the angle. The relative fatigue life between the NPR-TEG and the traditional TEG hardly varies with the wearing position of human body. The power output of the NPR-TEG is inversely linear proportional to length and number of the fatigue crack. The obtained results can be used to optimize and predict the fatigue life of the flexible wearable thermoelectric devices.",

keywords = "Fatigue life, Negative Poisson's ratio, Thermoelectric material, Power output",

author = "Cui, {Y. J.} and C. Liu and Wang, {K. F.} and Wang, {B. L.} and Y. Liu",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

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day = "28",

doi = "10.1016/j.engfracmech.2023.109142",

language = "English",

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T1 - Effect of negative Poisson's ratio architecture on fatigue life and output power of flexible wearable thermoelectric generators

AU - Cui, Y. J.

AU - Liu, C.

AU - Wang, K. F.

AU - Wang, B. L.

AU - Liu, Y.

PY - 2023/3/28

Y1 - 2023/3/28

N2 - The negative Poisson's ratio (NPR) structure is the typical metamaterial structure that has excellent mechanical performances and other functional properties. This paper employs the NPR structure to improve the fracture resistance and flexibility of the wearable thermoelectric generator (TEG). The analytical models of the fatigue life and power output of the NPR-TEG for powering the wearable electronics are proposed. Effect of the wearing position of the generator on the human body on the fatigue life is evaluated. It is found that the fatigue life of the traditional TEG is greatly enhanced by employing the NPR structure. Fatigue life of the NPR-TEG decreases with the thickness of the cell wall and the angle. The relative fatigue life between the NPR-TEG and the traditional TEG hardly varies with the wearing position of human body. The power output of the NPR-TEG is inversely linear proportional to length and number of the fatigue crack. The obtained results can be used to optimize and predict the fatigue life of the flexible wearable thermoelectric devices.

AB - The negative Poisson's ratio (NPR) structure is the typical metamaterial structure that has excellent mechanical performances and other functional properties. This paper employs the NPR structure to improve the fracture resistance and flexibility of the wearable thermoelectric generator (TEG). The analytical models of the fatigue life and power output of the NPR-TEG for powering the wearable electronics are proposed. Effect of the wearing position of the generator on the human body on the fatigue life is evaluated. It is found that the fatigue life of the traditional TEG is greatly enhanced by employing the NPR structure. Fatigue life of the NPR-TEG decreases with the thickness of the cell wall and the angle. The relative fatigue life between the NPR-TEG and the traditional TEG hardly varies with the wearing position of human body. The power output of the NPR-TEG is inversely linear proportional to length and number of the fatigue crack. The obtained results can be used to optimize and predict the fatigue life of the flexible wearable thermoelectric devices.

KW - Fatigue life

KW - Negative Poisson's ratio, Thermoelectric material

KW - Power output

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DO - 10.1016/j.engfracmech.2023.109142

M3 - Article

AN - SCOPUS:85149357666

SN - 0013-7944

VL - 281

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

M1 - 109142

ER -

Effect of negative Poisson's ratio architecture on fatigue life and output power of flexible wearable thermoelectric generators

Abstract

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Keywords

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