scholarly journals Ionogel-based flexible stress and strain sensors

2021 ◽  
pp. 1-30
Author(s):  
Gengrui Zhao ◽  
Bo Lv ◽  
Honggang Wang ◽  
Baoping Yang ◽  
Zhenyu Li ◽  
...  
Keyword(s):  
Strain Sensors ◽  
Stress And Strain

SIMULATION AND ANALYSIS OF A NOVEL MICRO-BEAM TYPE OF MEMS STRAIN SENSORS

2019 ◽  
Vol 57 (6) ◽  
pp. 762
Author(s):  
Nguyen Chi Cuong ◽  
Trinh Xuan Thang ◽  
Tran Duy Hoai ◽  
Nguyen Thanh Phuong ◽  
Vu Le Thanh Long ◽  
...  
Keyword(s):  
Strain Gauge ◽  
Fem Simulation ◽  
High Sensitivity ◽  
Strain Sensors ◽  
Material Objects ◽  
Stress And Strain ◽  
Transverse Stress ◽  
Longitudinal Stress ◽  
Micro Electro Mechanical Systems ◽  
Beam Type

A new structure of a micro-strain beam type of Micro-Electro-Mechanical-Systems (MEMS) strain gauge is proposed and simulated. The stress and strain distributions of MEMS strain gauge are evaluated in x and y directions by 2D FEM simulation, respectively. The results showed that the longitudinal stress and strain distributions of strain beam enhance significantly, while the transverse stress and strain distributions are almost unchanged in the whole structure of MEMS strain gauge. High sensitivity of piezoresistive MEMS strain sensors can be designed to detect only one single direction of the stress and strain on the material objects.

Psoriasis, stress, and strain

1971 ◽  
Vol 103 (6) ◽  
pp. 599-605 ◽  
Author(s):  
R. Baughman
Keyword(s):  
Stress And Strain

EFFECT OF STRESS AND STRAIN ON MARTENSITIC TRANSFORMATION IN A Fe-Ni-Mo-C ALLOY WITH A HIGH Ms TEMPERATURE

1982 ◽  
Vol 43 (C4) ◽  
pp. C4-473-C4-477 ◽  
Author(s):  
E. Gautier ◽  
A. Simon ◽  
G. Collette ◽  
G. Beck
Keyword(s):  
Martensitic Transformation ◽  
Stress And Strain

Mathematical Model of the Effective Properties of a Fiber Reinforced Composite with a Linearly Graded Transition Zone

2010 ◽  
Vol 38 (4) ◽  
pp. 286-307
Author(s):  
Carey F. Childers
Keyword(s):  
Mathematical Model ◽  
Transition Zone ◽  
Effective Properties ◽  
Local Stress ◽  
Stress And Strain ◽  
Fiber Reinforced ◽  
Strain Fields ◽  
Shear Moduli ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite

Abstract Tires are fabricated using single ply fiber reinforced composite materials, which consist of a set of aligned stiff fibers of steel material embedded in a softer matrix of rubber material. The main goal is to develop a mathematical model to determine the local stress and strain fields for this isotropic fiber and matrix separated by a linearly graded transition zone. This model will then yield expressions for the internal stress and strain fields surrounding a single fiber. The fields will be obtained when radial, axial, and shear loads are applied. The composite is then homogenized to determine its effective mechanical properties—elastic moduli, Poisson ratios, and shear moduli. The model allows for analysis of how composites interact in order to design composites which gain full advantage of their properties.

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.

Effect of pipe expansion on the redistribution of residual stresses after molding

2020 ◽  
Vol 10 (2) ◽  
pp. 122-126
Author(s):  
Nikolay A. Makhutov ◽  
◽  
Dmitry A. Neganov ◽  
Eugeny P. Studenov ◽  
◽  
...  
Keyword(s):  
Residual Stresses ◽  
Strain Distribution ◽  
Strain State ◽  
Stress And Strain ◽  
Cylindrical Shape ◽  
Pipe Material ◽  
Pipe Expansion ◽  
Calculation Results ◽  
Residual Deformations ◽  
Stress And Strain Distribution

In the factory, pipes for trunk oil and oil product pipelines are obtained by molding and welding. To ensure a cylindrical shape and reduce technological residual stresses, expansion technology is used. Pipe expansion causes a significant change in the values of residual deformations and stresses. The article presents both the calculation results and graphs regarding stress and strain distribution during bending of the stock and their redistribution after expansion. Based on the calculation results, the final total values of residual stresses and residual deformations caused by bending and expansion were stated to be important components of the stress-strain state observed in pipelines being operated under cyclic loading, as well as those used in assessing how degradation affects the ductility of the pipe material. These factors were concluded as being reasonably taken into account when performing verification calculations regarding long-running pipelines if, based on their diagnostics and analysis, their state does not meet modern strength requirements.

DETERMINE THE VALUE OF STRESS AND STRAIN AT VARIOUS VALUES OF EXPONENTS

2020 ◽  
Vol 9 (8) ◽  
pp. 5549-5559
Author(s):  
H. Kaur ◽  
N. Gupta ◽  
A. Jain
Keyword(s):  
Stress And Strain
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