具有编织结构的高度线性拉伸传感器,可以约束裂.
Bo Wang1,2, Meiya Liu1, Shuting Yang2
1Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan, 430200, China.
Small (Weinheim an der Bergstrasse, Germany)
|March 10, 2025
概括
一种由聚烯/聚氨制成的新型三链 (TSB) 传感器表现出极好的线性和稳定性,用于监测关节运动. 这种可伸缩的电子纤维在可穿戴设备和健康监测方面提供了有前途的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 可穿戴技术可穿戴技术
- 生物医学工程 生物医学工程
背景情况:
- 基于可伸缩纤维的电子产品对于监测运动,医疗保健和可穿戴设备中的人类联合活动至关重要.
- 传感器响应信号的线性是拉伸传感器的关键性能指标.
研究的目的:
- 开发和评估一种新型的三丝 (TSB) 传感器,以提高检测关节运动的性能.
- 评估TSB传感器在各种条件下的线性,响应时间,稳定性和适用性.
主要方法:
- 使用聚烯/聚氨 (PPy/PU) 丝制造三丝 (TSB).
- 使用同等电路模型进行电气表征.
- 在不同的应变水平,拉伸率和初始间距下测试传感器性能.
主要成果:
- 由于TSB传感器的并行结构,TSB传感器的导电性能优于单一光纤.
- 实现了极好的线性 (R2=0.995在0-75%应变),快速响应时间 (40毫秒) 和高稳定性超过10,000个周期.
- 确定了特定延伸范围 (分别为0.8-1.6厘米,0.8-2.4厘米和1.2-4.8厘米) 的最佳间距 (1.2和4厘米),延伸速度为4-10毫米s-1.8毫米.
结论:
- 开发的TSB传感器为监控联合活动提供了高度线性,稳定和快速响应的解决方案.
- 该TSB传感器显示了可穿戴设备,医疗保健,虚拟现实 (VR) 和增强现实 (AR) 应用的巨大潜力.
相关概念视频
01:27Measurements of Strain
274
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
274
01:15Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
236
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
236
01:26Hooke's Law
337
Hooke's law, a pivotal principle in material science, establishes that the strain a material undergoes is directly proportional to the applied stress, defined by a factor called the modulus of elasticity or Young's modulus.
337
01:19Members Made of Elastoplastic Material
93
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
As the bending moment...
93
01:24Stress-Strain Diagram - Ductile Materials
588
The stress-strain relationship in ductile materials such as structural steel or aluminium is intricate and progresses through several stages. When a specimen is loaded, it initially exhibits a linear length increase, depicted by a steep straight line on the stress-strain diagram. It indicates the material is elastically deforming and will return to its original shape once unloaded. However, when a critical stress value is reached, plastic deformation begins. This stage sees substantial...
588
01:21Deformations in a Transverse Cross Section
165
When a material is subjected to uniaxial stress, it elongates or contracts in the direction of the applied force, and also undergoes changes in the perpendicular directions. This behavior is crucial for understanding how materials behave under stress and is governed by mechanical properties such as Poisson's ratio v, which measures the ratio of transverse strain to axial strain.
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...
165