scholarly journals Graphene-Based Strain Gauge on a Flexible Substrate

2014 ◽  
pp. 699 ◽  
Keyword(s):  
Strain Gauge ◽  
Flexible Substrate

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 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 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 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

Dynamische Venenfunktionstests auf dem Prüfstand

Phlebologie ◽  
2002 ◽  
Vol 31 (04) ◽  
pp. 85-90 ◽  
Author(s):  
H.-M. Häfner ◽  
H. Bablich ◽  
G. Rassner ◽  
M. Jünger ◽  
A. Steins
Keyword(s):  
Strain Gauge ◽  
Automatische Auswertung

Zusammenfassung Ziel: Überprüfung der Korrelation der photooptischen Venenfunktionstests Lichtreflexionsrheographie (LRR), digitale Photoplethysmographie (DPPG) und der Quecksilberdehnungsstreifen- Plethysmographie (Hg-strain gauge) mit der Phlebodynamometrie (PDM). Methode: Die simultane Messung von LRR, DPPG, Hg-strain gauge und PDM wurde an 34 Patienten mit chronischer venöser Insuffizienz in den klinischen Stadien I bis III nach Widmer an insgesamt 39 Unterschenkeln vorgenommen. Die Messungen erfolgten während Dorsalextension des Fußes in sitzender und während Plantarflexion des Fußes in stehender Position. Als Parameter für die Ermittlung des Korrelationskoeffizienten wurden die Wiederauffüllzeiten t0 und t1/2 sowie die venöse Abpumpleistung ermittelt. Ergebnisse: Unabhängig von Körperposition und Anlage von Tourniquets erreichten die Korrelationen für alle Messverfahren und Parameter Werte zwischen r = 0,76 (t0 LRR) und r = 0,05 (Abpumpleistung DPPG automatische Auswertung). Eine gute Korrelation von t0 wurde in stehender Körperposition unabhängig von der Anlage der Tourniquets beim Hg-strain gauge (r = 0,49) und LRR (r = 0,51) erreicht. Diese Korrelation verbesserte sich in sitzender Körperposition. Die schlechteste Korrelation wurde bei der DPPG ermittelt (r = 0,25 in stehender, r = 0,51 in sitzender Position). Eine Verbesserung der Korrelation wurde beim DPPG durch die manuelle Auswertung der Kurven erreicht. Schlussfolgerung: Sowohl die Wahl des Untersuchungsverfahrens wie auch das gewählte Belastungsprogramm können erhebliche Auswirkungen auf die Korrelation mit der PDM haben. Unsere Ergebnisse zeigen, dass bei der Bewertung der Wiederauffüllzeiten t0 und t1/2 der Hg-strain gauge und die LRR die höchste Korrelation bei Dorsalextension in sitzender Körperposition mit der PDM aufweisen.

Diagnosis of Deep Vein Thrombosis by Combination of Doppler Ultrasound Flow Examination and Strain Gauge Plethysmography

1982 ◽  
Vol 47 (02) ◽  
pp. 141-144 ◽  
Author(s):  
H Bounameaux ◽  
B Krähenbühl ◽  
S Vukanovic
Keyword(s):  
Deep Vein Thrombosis ◽  
Negative Predictive Value ◽  
Doppler Ultrasound ◽  
Strain Gauge ◽  
Predictive Value ◽  
Lower Limbs ◽  
Vein Thrombosis ◽  
Non Invasive ◽  
Strain Gauge Plethysmography ◽  
Deep Vein

SummaryDoppler ultrasound flow examination, strain gauge plethysmography and contrast venography were performed in 160 lower limbs of 80 in-patients. Deep vein thrombosis (DVT) was suspected in 87 limbs. Using measurement of venous stop-flow pressure, the Doppler method had an overall sensitivity of 83%. By combined use of Doppler and Plethysmography, sensitivity was increased to 96%. Specificity was 62% and 51%, respectively. With a positive and a negative predictive value of 80% and 73%, respectively, the combination of both non-invasive methods cannot reliably replace venography in the diagnosis of DTV, although all (40/40) thromboses proximal to or involving the popliteal segment were detected by either Doppler and Plethysmography or both.After exclusion of 14 patients (18%) suffering from conditions known to alter the results of these non-invasive methods, the positive predictive value of abnormal findings in both Doppler and Plethysmography was increased to 94% for suspected limbs, whilst negative predictive value of both negative Doppler and Plethysmography was 90%, allowing the avoidance of venography in these patients.

Metal Strain Gauge Pressure Sensor Using SiO2/Si3N4 Diaphragm

2019 ◽  
Vol 139 (4) ◽  
pp. 63-68
Author(s):  
Hiroshi Nakano ◽  
Masahiro Matsumoto ◽  
Yasuo Onose ◽  
Kazuhiro Ohta
Keyword(s):  
Pressure Sensor ◽  
Strain Gauge ◽  
Gauge Pressure ◽  
Metal Strain

TWO METHODS FOR CALIBRATION OF STRAIN-GAUGE BALANCES USING TSAGI BALANCE CALIBRATION MACHINES

2017 ◽  
Vol 48 (2) ◽  
pp. 187-197 ◽  
Author(s):  
Valerii Semyonovich Volobuyev ◽  
Anton Roaldovich Gorbushin ◽  
Iraida Alekseevna Sudakova ◽  
V. I. Tikhomirov
Keyword(s):  
Strain Gauge ◽  
Balance Calibration
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