Ultrathin and Highly Tough Hydrogel Films for Multifunctional Strain Sensors

2021 ◽  
Author(s):  
Qian Zhang ◽  
Qian Wang ◽  
Guangyu Wang ◽  
Zilu Zhang ◽  
Shan Xia ◽  
...  
Keyword(s):  
Strain Sensors ◽  
Hydrogel Films

Modeling of Contact Patch in Dual-Chamber Pneumatic Tires

2018 ◽  
Vol 46 (2) ◽  
pp. 78-92 ◽  
Author(s):  
A. I. Kubba ◽  
G. J. Hall ◽  
S. Varghese ◽  
O. A. Olatunbosun ◽  
C. J. Anthony
Keyword(s):  
Strain Sensors ◽  
Surface Strain ◽  
Wireless Data ◽  
Data Logger ◽  
Dual Chamber ◽  
Piezoelectric Polymer ◽  
Pure Rolling ◽  
Piezoelectric Elements ◽  
Strain Data ◽  
Deformation Patterns

ABSTRACT This study presents an investigation of the inner tire surface strain measurement by using piezoelectric polymer transducers adhered on the inner liner of the tire, acting as strain sensors in both conventional and dual-chamber tires. The piezoelectric elements generate electrical charges when strain is applied. The inner liner tire strain can be found from the generated charge. A wireless data logger was employed to measure and transmit the measured signals from the piezoelectric elements to a PC to store and display the readout signals in real time. The strain data can be used as a monitoring system to recognize tire-loading conditions (e.g., traction, braking, and cornering) in smart tire technology. Finite element simulations, using ABAQUS, were employed to estimate tire deformation patterns in both conventional and dual-chamber tires for pure rolling and steady-state cornering conditions for different inflation pressures to simulate on-road and off-road riding tire performances and to compare with the experimental results obtained from both the piezoelectric transducers and tire test rig.

Usage of Fiber Grating Strain Sensors for Diagnostics of Composite Pressure Vessels

2003 ◽  
Author(s):  
E Udd ◽  
M. Kunzler ◽  
S. Calvert ◽  
S. Kreger
Keyword(s):  
Pressure Vessels ◽  
Strain Sensors ◽  
Fiber Grating ◽  
Composite Pressure Vessels

Usage of Multi-Axis Fiber Grating Strain Sensors to Support Nondestructive Evaluation of Composite Parts and Adhesive Bond Lines

2003 ◽  
Author(s):  
Eric Udd ◽  
Steve Kreger ◽  
Sean Calvert ◽  
Marley Kunzler ◽  
Katy Davol
Keyword(s):  
Nondestructive Evaluation ◽  
Adhesive Bond ◽  
Strain Sensors ◽  
Fiber Grating

scholarly journals Piezoresistive dynamic simulations of FDM 3D-Printed embedded strain sensors: a new modal approach

2019 ◽  
Vol 24 ◽  
pp. 390-397 ◽  
Author(s):  
Marco Maurizi ◽  
Filippo Cianetti ◽  
Janko Slavič ◽  
Guido Zucca ◽  
Massimiliano Palmieri
Keyword(s):  
Strain Sensors ◽  
Dynamic Simulations ◽  
Modal Approach ◽  
3D Printed

A packaging technique for silicon MEMS strain sensors on steel

2008 ◽  
Author(s):  
Matteo Ferri ◽  
Stefano Cristiani ◽  
Alberto Roncaglia ◽  
Yusuke Kobayashi ◽  
Kenichi Soga
Keyword(s):  
Strain Sensors ◽  
Packaging Technique

scholarly journals Highly Sensitive E-Textile Strain Sensors Enhanced by Geometrical Treatment for Human Monitoring

Sensors ◽  
2020 ◽  
Vol 20 (8) ◽  
pp. 2383 ◽  
Author(s):  
Chi Cuong Vu ◽  
Jooyong Kim
Keyword(s):  
Form Factors ◽  
Human Movement ◽  
Fast Response ◽  
Strain Sensors ◽  
Electronic Textiles ◽  
Smart Textiles ◽  
Electronic Manufacturing ◽  
Starting Point ◽  
Textile Sensors ◽  
Manufacturing Techniques

Electronic textiles, also known as smart textiles or smart fabrics, are one of the best form factors that enable electronics to be embedded in them, presenting physical flexibility and sizes that cannot be achieved with other existing electronic manufacturing techniques. As part of smart textiles, e-sensors for human movement monitoring have attracted tremendous interest from researchers in recent years. Although there have been outstanding developments, smart e-textile sensors still present significant challenges in sensitivity, accuracy, durability, and manufacturing efficiency. This study proposes a two-step approach (from structure layers and shape) to actively enhance the performance of e-textile strain sensors and improve manufacturing ability for the industry. Indeed, the fabricated strain sensors based on the silver paste/single-walled carbon nanotube (SWCNT) layers and buffer cutting lines have fast response time, low hysteresis, and are six times more sensitive than SWCNT sensors alone. The e-textile sensors are integrated on a glove for monitoring the angle of finger motions. Interestingly, by attaching the sensor to the skin of the neck, the pharynx motions when speaking, coughing, and swallowing exhibited obvious and consistent signals. This research highlights the effect of the shapes and structures of e-textile strain sensors in the operation of a wearable e-textile system. This work also is intended as a starting point that will shape the standardization of strain fabric sensors in different applications.

scholarly journals Dynamic Nanohybrid-Polysaccharide Hydrogels for Soft Wearable Strain Sensing

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3574
Author(s):  
Pejman Heidarian ◽  
Hossein Yousefi ◽  
Akif Kaynak ◽  
Mariana Paulino ◽  
Saleh Gharaie ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Strain Sensors ◽  
Self Healing ◽  
Nano Materials ◽  
Strain Sensing ◽  
Ferric Ions ◽  
Research Activity ◽  
Adhesion Properties ◽  
High Mechanical Strength ◽  
The Moment

Electroconductive hydrogels with stimuli-free self-healing and self-recovery (SELF) properties and high mechanical strength for wearable strain sensors is an area of intensive research activity at the moment. Most electroconductive hydrogels, however, consist of static bonds for mechanical strength and dynamic bonds for SELF performance, presenting a challenge to improve both properties into one single hydrogel. An alternative strategy to successfully incorporate both properties into one system is via the use of stiff or rigid, yet dynamic nano-materials. In this work, a nano-hybrid modifier derived from nano-chitin coated with ferric ions and tannic acid (TA/Fe@ChNFs) is blended into a starch/polyvinyl alcohol/polyacrylic acid (St/PVA/PAA) hydrogel. It is hypothesized that the TA/Fe@ChNFs nanohybrid imparts both mechanical strength and stimuli-free SELF properties to the hydrogel via dynamic catecholato-metal coordination bonds. Additionally, the catechol groups of TA provide mussel-inspired adhesion properties to the hydrogel. Due to its electroconductivity, toughness, stimuli-free SELF properties, and self-adhesiveness, a prototype soft wearable strain sensor is created using this hydrogel and subsequently tested.

Gesture recognition device based on cross reticulated graphene strain sensors

2021 ◽  
Vol 32 (7) ◽  
pp. 8410-8417
Author(s):  
Linlin Yuan ◽  
Weiye Qi ◽  
Kaiyu Cai ◽  
Chunhua Li ◽  
Qiuping Qian ◽  
...  
Keyword(s):  
Gesture Recognition ◽  
Strain Sensors

Wearable and self-healable textile-based strain sensors to monitor human muscular activities

2021 ◽  
pp. 108969
Author(s):  
Muhammad Zahid ◽  
Arkadiusz Zych ◽  
Simeone Dussoni ◽  
Giulia Spallanzani ◽  
Roberto Donno ◽  
...  
Keyword(s):  
Strain Sensors
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