High-speed weighing system with a multicomponent strain-gauge dynamometer

1990 ◽  
Vol 33 (7) ◽  
pp. 673-675
Author(s):  
V. V. Bogdanov ◽  
A. S. Romashkin ◽  
B. A. Derkach
Keyword(s):  
Strain Gauge ◽  
High Speed ◽  
Strain Gauge Dynamometer

scholarly journals Data Measuring System for Torque Measurement on Running Shafts Based on a Non-Contact Torsional Dynamometer

2019 ◽  
Vol 6 (2) ◽  
pp. e17-e23 ◽  
Author(s):  
S. M. Vanyeyev ◽  
D. V. Miroshnichenko ◽  
T. S. Rodymchenko ◽  
M. Protsenko ◽  
D. V. Smolenko
Keyword(s):  
Strain Gauge ◽  
High Speed ◽  
Measurement Data ◽  
Power Measurement ◽  
Measuring System ◽  
Bench Test ◽  
Torque Measurement ◽  
Performance Factors ◽  
Strain Gauge Dynamometer ◽  
And Performance

The need for power measurement transmitted by the running shaft has led to the need for using devices for measuring torque on the shaft. Of particular importance is the power measurement on high-speed machines, wherein some cases conventional measurement systems are either unsuitable or have low accuracy. Currently, data measuring systems are widely used in the researches of turbomachines. They allow to receive, process, transmit, store and display measurement data. Their application is relevant in relation to the priority of experimental study and subsequent modeling of characteristics and performance factors of expansion machines. The purpose of this research is a design and generation of the data measuring system for measuring torque on the running shaft of vortex expansion machines using a non-contact torsional dynamometer (strain-gauge clutch). The research has considered the results of the development of data measuring system, performed a theoretical analysis and presented the results of the practical application of the non-contact strain-gauge dynamometer designed for torque measurement on the shaft of low-power expansion machines when operating under bench test conditions. Has dealt with the problems of development, calibration. Keywords: data measuring system, torque, coupling, resistive-strain sensor, vortex expansion machine.

Effects of vessel baffling on the drawdown of floating solids

2009 ◽  
Vol 63 (2) ◽  
Author(s):  
Joanna Karcz ◽  
Beata Mackiewicz
Keyword(s):  
Experimental Data ◽  
Power Consumption ◽  
Strain Gauge ◽  
High Speed ◽  
Vessel Diameter ◽  
Rushton Turbine ◽  
Agitated Vessel ◽  
Dimensionless Equation ◽  
Inner Diameter ◽  
Floating Particles

AbstractThe effects of baffling of an agitated vessel on the production of floating particles suspension are presented in this paper. Critical agitator speed, needed for particles dispersion in a liquid agitated in a vessel of the inner diameter of 0.295 m, was determined. The just drawdown agitator speeds were defined analogously to the Zwietering criterion. Specific agitation energy was calculated from the power consumption experimental data obtained by means of the strain gauge method. The experiments were carried out for twelve configurations of the baffles differing in number, length and their arrangement in the vessels. The following high-speed impellers were used: up- and downpumping six blade pitched blade turbines, Rushton turbine, and propeller. The impeller was located in the vessel in the height equal to two-thirds or one-third of the vessel diameter from the bottom of the vessel. The results were described in the form of a dimensionless equation.

Strain-gauge dynamometer

1979 ◽  
Vol 22 (6) ◽  
pp. 684-686
Author(s):  
Yu. A. Shevtsov
Keyword(s):  
Strain Gauge ◽  
Strain Gauge Dynamometer

Effect of temperature on strain-gauge dynamometer characteristics

1977 ◽  
Vol 20 (8) ◽  
pp. 1194-1196
Author(s):  
A. V. Ignatov ◽  
L. I. Kosov
Keyword(s):  
Strain Gauge ◽  
Effect Of Temperature ◽  
Strain Gauge Dynamometer

Direct and Indirect Strain Measurement of Flexible Printed Circuit Boards - fPCBs

2013 ◽  
Vol 655-657 ◽  
pp. 88-93 ◽  
Author(s):  
Luciano Arruda ◽  
Cristiano Coimbra ◽  
João Marco Andolfatto
Keyword(s):  
Strain Gauge ◽  
Strain Measurement ◽  
High Speed ◽  
Printed Circuit Boards ◽  
Direct Method ◽  
Indirect Measurement ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Polyimide Substrate ◽  
Flexible Printed Circuit

This work is related to reliability of strain measurement in flexible printed circuit boards (fPCBs) made with polyimide substrate. It was observed that the fPCBs are very sensitive to strain mounting stiffness. The indirect measurement method will be done employing High Speed Camera (HSP). The direct method will be formulated in two ways: 1) conventional strain gauge glued in an fPCBs; 2) printed strain gauge in a polyimide substrate. This paper will point out mistakes and show advantages when using different method to extract the deformation field of the selected area in a flexible thin film.

scholarly journals A Study on High-Speed Avalanches in the Kurobe Canyon, Japan

1980 ◽  
Vol 26 (94) ◽  
pp. 141-151 ◽  
Author(s):  
Hiromu Shimizu ◽  
Tosio Huzioka ◽  
Eizi Akitaya ◽  
Hideki Narita ◽  
Masayuki Nakagawa ◽  
...  
Keyword(s):  
Strain Gauge ◽  
Atmospheric Pressure ◽  
High Speed ◽  
Impact Force ◽  
Impact Pressure ◽  
Wave Fronts ◽  
Load Cells

AbstractObservations and measurements were made of high-speed avalanches at Shiai-dani, the Kurobe canyon, to reveal their real features and properties, using strain-gauge-type load cells in measuring impact force and speed. A maximum impact pressure of 140 × 104 N m-2 was obtained, as well as data indicating the existence of a number of wave fronts, ranging in speed from 9 to 60 m s -1 inside an avalanche. Violent changes in atmospheric pressure ranging from -21 to +5 mbar were observed near its path when a high-speed avalanche passed by.

Efficacy of High-Speed Strain Gauge Measurements in Analysis of Rotating Detonation Combustors

2022 ◽  
Author(s):  
Tyler C. Pritschau ◽  
Vijay Anand ◽  
Alec R. Gaetano ◽  
Jorge J. Betancourt ◽  
Rachel Wiggins ◽  
...  
Keyword(s):  
Strain Gauge ◽  
High Speed ◽  
Strain Gauge Measurements ◽  
Rotating Detonation

scholarly journals A Study on High-Speed Avalanches in the Kurobe Canyon, Japan

1980 ◽  
Vol 26 (94) ◽  
pp. 141-151 ◽  
Author(s):  
Hiromu Shimizu ◽  
Tosio Huzioka ◽  
Eizi Akitaya ◽  
Hideki Narita ◽  
Masayuki Nakagawa ◽  
...  
Keyword(s):  
Strain Gauge ◽  
Atmospheric Pressure ◽  
High Speed ◽  
Impact Force ◽  
Impact Pressure ◽  
Wave Fronts ◽  
Load Cells

Abstract Observations and measurements were made of high-speed avalanches at Shiai-dani, the Kurobe canyon, to reveal their real features and properties, using strain-gauge-type load cells in measuring impact force and speed. A maximum impact pressure of 140 × 104 N m-2 was obtained, as well as data indicating the existence of a number of wave fronts, ranging in speed from 9 to 60 m s -1 inside an avalanche. Violent changes in atmospheric pressure ranging from -21 to +5 mbar were observed near its path when a high-speed avalanche passed by.

scholarly journals Validity and reliability of strain gauge measurement of volitional quadriceps force in patients with COPD

2017 ◽  
Vol 14 (3) ◽  
pp. 289-297 ◽  
Author(s):  
Fernanda Machado Rodrigues ◽  
Heleen Demeyer ◽  
Miek Hornikx ◽  
Carlos Augusto Camillo ◽  
Ebru Calik-Kutukcu ◽  
...  
Keyword(s):  
Strain Gauge ◽  
Femoral Nerve ◽  
Correlation Coefficients ◽  
Voluntary Contraction ◽  
Chronic Obstructive ◽  
Validity And Reliability ◽  
Obstructive Pulmonary Disease ◽  
Quadriceps Force ◽  
Strain Gauge Dynamometer ◽  
Strain Gauge Measurements

This study investigated the validity and reliability of fixed strain gauge measurements of isometric quadriceps force in patients with chronic obstructive pulmonary disease (COPD). A total cohort of 138 patients with COPD were assessed. To determine validity, maximal volitional quadriceps force was evaluated during isometric maximal voluntary contraction (MVC) manoeuvre via a fixed strain gauge dynamometer and compared to (a) potentiated non-volitional quadriceps force obtained via magnetic stimulation of the femoral nerve (twitch (Tw); n = 92) and (b) volitional computerized dynamometry (Biodex; n = 46) and analysed via correlation coefficients. Test–retest and absolute reliability were determined via calculations of intra-class correlation coefficients (ICCs), smallest real differences (SRDs) and standard errors of measurement (SEMs). For this, MVC recordings in each device were performed across two test sessions separated by a period of 7 days ( n = 46). Strain gauge measures of MVC demonstrated very large correlation with Tw and Biodex results ( r = 0.86 and 0.88, respectively, both p < 0.0001). ICC, SEM and SRD were numerically comparable between strain gauge and Biodex devices (ICC = 0.96 vs. 0.93; SEM = 8.50 vs. 10.54 N·m and SRD = 23.59 vs. 29.22 N·m, respectively). The results support that strain gauge measures of quadriceps force are valid and reliable in patients with COPD.

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