scholarly journals Local strain gauge based on the nanowires ring resonator embedded in a flexible substrate

2020 ◽  
Vol 15 (14) ◽  
pp. 1028-1032
Author(s):  
Shengkun Li ◽  
Xin Li ◽  
Yue Qin ◽  
Yuejin Zhao
Keyword(s):  
Strain Gauge ◽  
Ring Resonator ◽  
Flexible Substrate ◽  
Local Strain

scholarly journals Microscale local strain gauges based on visible micro-disk lasers embedded in a flexible substrate

2018 ◽  
Vol 26 (13) ◽  
pp. 16797 ◽  
Author(s):  
Taojie Zhou ◽  
Jie Zhou ◽  
Yuzhou Cui ◽  
Xiu Liu ◽  
Jiagen Li ◽  
...  
Keyword(s):  
Flexible Substrate ◽  
Local Strain ◽  
Strain Gauges

Measuring Strains for Hematite Phase in Sinter Ore by Electron Backscattering Diffraction Method

2006 ◽  
Vol 326-328 ◽  
pp. 237-240 ◽  
Author(s):  
Yasushi Sasaki ◽  
Manabu Iguchi ◽  
Mitsutaka Hino
Keyword(s):  
Linear Relationship ◽  
Strain Gauge ◽  
Diffraction Method ◽  
Local Strain ◽  
Electron Backscattering ◽  
Hematite Phase ◽  
Compression Strain ◽  
Electron Backscattering Diffraction ◽  
Ebsd Technique ◽  
The Relationship

Based on the relationship between quantified blurring degree of Kikuchi bands obtained by an electron backscattering diffraction (EBSD) technique and macroscopic strains measured by a strain gauge, the local compression strain SEBSD in sinter ore has been evaluated under various conditions. There is a good linear relationship between the SEBSD and the strains measured by a strain gauge. The local strain SEBSD evaluated by EBSD patterns can be used as an index of local strains.

Highly Sensitive Non-Classical Strain Gauge Using Organic Heptazole Thin-Film Transistor Circuit on a Flexible Substrate

2014 ◽  
Vol 24 (28) ◽  
pp. 4413-4419 ◽  
Author(s):  
Seung Hee Nam ◽  
Pyo Jin Jeon ◽  
Sung Wook Min ◽  
Young Tack Lee ◽  
Eun Young Park ◽  
...  
Keyword(s):  
Thin Film ◽  
Strain Gauge ◽  
Flexible Substrate ◽  
Thin Film Transistor ◽  
Classical Strain ◽  
Highly Sensitive ◽  
Transistor Circuit

scholarly journals Investigation of Some Fundamental Properties of Permeable Concrete

2012 ◽  
Vol 487 ◽  
pp. 869-873
Author(s):  
Manal Hussin ◽  
Zhu Ge Yan ◽  
Frank Bullen ◽  
Weena Lokuge
Keyword(s):  
Compressive Strength ◽  
Strain Gauge ◽  
Axial Strain ◽  
Local Strain ◽  
Pore Characteristics ◽  
Fundamental Properties ◽  
Concrete Mixtures ◽  
Material Stiffness ◽  
Porosity And Permeability ◽  
Global And Local

This paper presents the outcomes from a laboratory based research study undertaken to evaluate the fundamental properties of permeable concrete, including compressive strength, global and local strain, elastic modulus (stiffness), porosity and permeability. Six permeable concrete mixtures were made with constant water - cement ratio of 0.34, using different aggregate sizes and sand percentages. The compressive strength range was 15-35 MPa, while the permeability varied between 1.5 to 5.5mm/s and the porosity varied between 25 to 35 %. Two testing methods were used to measure the strain and modulus of elasticity (MOE) of the permeable concrete namely, platen-to-platen method and strain gauge method. Considerable difference was found between the MOEs obtained by the two methods. The MOE determined using the platen-to-platen method consistently were lower in value, which has been attributed to the softness of the capping components, the interface between the specimens and the platen and overall machine compliance. The pore characteristics and their distribution were seen to have an influence on the material responses such as material stiffness and strain. A comparison drawn between the axial strain obtained by the strain gauge measurement and that deduced from the platen-to-platen measurement was undertaken to evaluate the strain homogeneity along with possible detection of the localization phenomena.

scholarly journals μ-Si strain gauge array on flexible substrate for dynamic pressure measurement

2020 ◽  
Vol 315 ◽  
pp. 112274
Author(s):  
Fatima Garcia Castro ◽  
Olivier de Sagazan ◽  
Nathalie Coulon ◽  
Antoni Homs Corbera ◽  
Dario Fassini ◽  
...  
Keyword(s):  
Strain Gauge ◽  
Pressure Measurement ◽  
Dynamic Pressure ◽  
Flexible Substrate ◽  
Dynamic Pressure Measurement

scholarly journals Nanowire Ring Embedded in a Flexible Substrate for Local Strain Detection

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 347
Author(s):  
Shengkun Li ◽  
Yue Qin ◽  
Xin Li ◽  
Yuejin Zhao
Keyword(s):  
Detection System ◽  
Structural Parameters ◽  
Flexible Substrate ◽  
Ring Cavity ◽  
Local Strain ◽  
Strain Sensors ◽  
Resonant Wavelength ◽  
Gauge Factor ◽  
Light Sources ◽  
End To End

Optical sensing has attracted more and more attention in recent years with the advance in planar waveguide fabrication processes. The photon, as a carrier of information in sensing areas, could have a better performance than electrons. We propose a novel end-to-end ring cavity to fabricate sensitive units of a strain sensor. We then propose a method of combining a flexible substrate with an end-to-end semiconductor nanowire ring cavity to fabricate novel strain sensors. We used a tuning resonant wavelength detected by a homebuilt excitation and detection system to measure applied strain. The resonant wavelength of the strain gauge was red-shift and linear tuned with increasing strain. The gauge factor was about 50, calculated through experiments and theory, and Q was 1938, with structural parameters L = 70 µm and d = 1 µm. The high sensitivity makes it possible to measure micro deformation more accurately. End-to-end coupling active nanowire waveguides eliminate the shortcomings of side by side coupling structures, which have the phasing shift with no minor optical density loss. This resonator in flexible substrates could be used not only as on-chip strain sensors for micro or nano deformation detecting but also as tunable light sources for photonic integrated circuits.

scholarly journals A Low-Cost Strain Gauge Displacement Sensor Fabricated via Shadow Mask Printing

Sensors ◽  
2019 ◽  
Vol 19 (21) ◽  
pp. 4713 ◽  
Author(s):  
Ying Yi ◽  
Bo Wang ◽  
Amine Bermak
Keyword(s):  
Strain Gauge ◽  
Printed Electronics ◽  
Low Cost ◽  
Flexible Substrate ◽  
Displacement Sensor ◽  
Gauge Factor ◽  
Shadow Mask ◽  
Resistance Response ◽  
Thermal Compression ◽  
Sensing Material

This work presents a cost-effective shadow mask printing approach to fabricate flexible sensors. The liquid-state sensing material can be directly brushed on a flexible substrate through a shadow mask. The ink leakage issue which often occurs in printed electronics is addressed with a custom taping scheme. A simple thermal compression bonding approach is also proposed to package the functional area of the sensor. To verify the feasibility and robustness of the proposed fabrication approach, a prototyped strain gauge displacement sensor is fabricated using carbon ink as the sensing material and a flexible polyimide (PI) film as the substrate. Once the substrate is deformed, cracks in the solidified ink layer can cause an increased resistance in the conductive path, thus achieving function of stable displacement/strain sensing. As a demonstration for displacement sensing application, this sensor is evaluated by studying its real-time resistance response under both static and dynamic mechanical loading. The fabricated sensor shows a comparable performance (with a gauge factor of ~17.6) to those fabricated using costly lithography or inkjet printing schemes, while with a significantly lower production cost.

scholarly journals Microcrystalline silicon: Strain gauge and sensor arrays on flexible substrate for the measurement of high deformations

2015 ◽  
Vol 236 ◽  
pp. 273-280 ◽  
Author(s):  
Y. Kervran ◽  
O. De Sagazan ◽  
S. Crand ◽  
N. Coulon ◽  
T. Mohammed-Brahim ◽  
...  
Keyword(s):  
Strain Gauge ◽  
Flexible Substrate ◽  
Sensor Arrays ◽  
Microcrystalline Silicon

scholarly journals Concentric Array of Printed Strain Sensors for Structural Health Monitoring

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 1997 ◽  
Author(s):  
Daniel Zymelka ◽  
Kazuyoshi Togashi ◽  
Takeshi Kobayashi
Keyword(s):  
Sensor Array ◽  
Crack Formation ◽  
Flexible Substrate ◽  
Local Strain ◽  
Strain Sensors ◽  
Civil Infrastructure ◽  
Civil Structures ◽  
Sensing Systems ◽  
Potential Applications ◽  
Crack Tips

Civil infrastructure is expanding around the world. The ever-growing trend toward urbanization drives the demand for new investments. However, the new constructions and gradual deterioration of those already existing, especially bridges, give rise to concerns about their proper maintenance. To improve safety and drive down maintenance costs of civil structures, there is a need for inexpensive sensing systems capable of reliable and automated monitoring. In this study, we present a new concept of thin-film strain sensors arranged in an array with a concentric layout that is incorporated into a flexible substrate sheet. The designed sensor array is intended to analyze strains in the proximity of round holes made at the crack tips, found in the investigated construction elements of civil structures. In this study, the performance of the sensor array was demonstrated using measurements taken on a highway bridge in one of the largest cities in Japan. We show that it can measure local strain distribution and indicate a region with risk for crack formation. The demonstrated results show new area of potential applications for the printed strain sensors in monitoring civil structures.

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