Application of double arrowhead auxetic honeycomb structure in displacement measurement

Zhang, Zengkai; Wen, Qingguo; Li, Pengju; Hu, Hong

doi:10.1016/j.sna.2021.113218

Cited by 12 publications

(7 citation statements)

References 17 publications

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“…The main parts of the device are two installation holes and the ATS with a light shield (Figure 7b). In a previous study [35], an auxetic structure for displacement measurement has been proposed. However, this method relies on changing the light transmittance of the honeycomb structure to measure displacement, making it susceptible to interference from external light.…”

Section: Specimen Geometrymentioning

confidence: 99%

“…Furthermore, sandwich structures with an auxetic core have potential applications in the aerospace field [31]. Auxetic materials and structures also have the potential for engineering measurement applications [32][33][34][35]. The unique properties of auxetic materials can be leveraged for accurate measurements of various physical quantities.…”

Section: Introductionmentioning

confidence: 99%

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Displacement Measurement Method Based on Double-Arrowhead Auxetic Tubular Structure

Wen,

Li,

Zhang

et al. 2023

Sensors

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This research paper introduces an innovative technique for measuring displacement using auxetic tubular structure (ATS). The proposed displacement measurement method is based on tubular structures with a negative Poisson’s ratio. It capitalizes on the underlying principle that the elastic deformation-induced change in transmittance of the ATS can be translated into a corresponding modification in the output current of the solar cell. This method allows for the conversion of the variation in light transmission into a corresponding variation in output voltage. The construction of the ATS can be achieved through 3D-printing technology, enhancing the accessibility of displacement measurement and design flexibility. The experimental results demonstrate that the proposed measurement method exhibits a linear error of less than 8% without any subsequent signal processing and achieves a sensitivity of 0.011 V/mm without signal amplification. Furthermore, experimental results also show that the proposed method has good repeatability and can maintain a high level of reliability and sensitivity when using different measurement devices. This confirms the effectiveness and feasibility of the proposed method, showing a favorable linear relationship between the input and output of the measurement system with an acceptable sensitivity, repeatability, and reliability.

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Section: Specimen Geometrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Displacement Measurement Method Based on Double-Arrowhead Auxetic Tubular Structure

Wen,

Li,

Zhang

et al. 2023

Sensors

Self Cite

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show abstract

“…Regardless of the manufacturing process, auxetics' mechanical properties depend on the structure's geometry and how it deforms when subjected to loads [40]. For this reason, over the years, most of the research effort has been put into designing and characterizing different classes of structures, generating a large pool of potential auxetic designs [35,36,[41][42][43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

On the behavior of auxetic inserts: a numerical analysis to derive design guidelines

Di Brizzi,

Graziosi,

Bondin

et al. 2024

Smart Mater. Struct.

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Auxetics are a class of materials and metamaterials with a negative Poisson’s ratio (ν) and have gained tremendous popularity over the last three decades. Many studies have focused on characterizing designs that allow obtaining a negative ν. However, some open issues remain concerning understanding the auxetic behavior in operational conditions. Studies have been centered on analyzing the response of specific auxetic topologies instead of treating auxeticity as a property to be analyzed in a well-defined structural context. This study aims to contribute to the investigation of auxetic materials with a structural application, focusing on maximizing performance. The field of application of auxetics for designing inserts was selected and a model of a nail-cavity system was created to determine the effects of different design choices on the system behavior by exploring relationships between selected parameters and the auxetic insert behavior. The exploration combines finite element modeling analyses with their surrogate models generated by supervised learning algorithms. This approach allows for exploring the system’s behavior in detail, thus demonstrating the potential effectiveness of auxetics when used for such applications. A list of design guidelines is elaborated to support the exploitation of auxetics in nail-cavity systems.

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“…[56] PR and sensitivity of sensor are inversely related, [42,57] and many researchers improve sensor performance using auxetic structures. [58][59][60] For example, the auxetic sensor with PR of À0.5 shows a 300% enhancement in piezoresistive sensitivity, and the gauge factor (GF) improves by more than 500%. [57] Therefore, implementing a topology optimization method [44][45][46][47]51] for obtaining auxetic structures with different Poisson's ratios will be very useful for piezoresistive sensors to provide them with different sensitivities to use in different applications from detecting the movements of different parts of the human body to detecting earthquakes.…”

Section: Introductionmentioning

confidence: 99%

Novel Linear, Piezoresistive, Auxetic Sensors Coated by AAA Battery Active Carbons with Supreme Sensitivity for Human Body Movement Detection

Taherkhani,

Bodaghi,

Rahmani

et al. 2023

Adv Eng Mater

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Herein, a novel strategy for creating low‐cost, sustainable, piezoresistive auxetic sensors using the active carbon in consumed AAA batteries, promoting a circular economy, is presented. An auxetic structure with a fixed Poisson's ratio during the strain is designed for sensing. The sensor substrate is silicone RTV2, and the sensing element is the active carbon in AAA batteries chopped to microscale particles using an ultrasonic wave. The sensor mold is designed using Solidworks software and produced using a computer numerical control device and EdgeCam2014 software. The coating process is performed by spraying the prepared particles on the molded auxetic structure and putting the coated auxetic structure under ultraviolet ray to prepare the final sensor. Sensitivity tests are performed, and the results show that the proposed sensor has a better sensitivity of about 1000% and 410% than the previous mixed and layered composite auxetic counterparts. The proposed sensor has linear sensitivity during the strain (estimated with a line with a slope of 0.64) while previous ones have a nonlinear performance (estimated at least with two lines). The sustainable sensor is implemented to detect the movements of the human body, including the movements of the wrist, finger, elbow, and forearm.

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Application of double arrowhead auxetic honeycomb structure in displacement measurement

Cited by 12 publications

References 17 publications

Displacement Measurement Method Based on Double-Arrowhead Auxetic Tubular Structure

Displacement Measurement Method Based on Double-Arrowhead Auxetic Tubular Structure

On the behavior of auxetic inserts: a numerical analysis to derive design guidelines

Novel Linear, Piezoresistive, Auxetic Sensors Coated by AAA Battery Active Carbons with Supreme Sensitivity for Human Body Movement Detection

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