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Showing 1 to 17 of 17 for “"dynamometers"”.
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Device for mechanical plotting of power/speed curves for a D.C. motor
… to students based on functionality of modern dynamometers. Previous work in a 1998 master's thesis by Peter T. Lee built a device to mechanically demonstrate the torque/speed relationship for engineering students. This thesis expands that work to prototype a modified device to show the …
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Design of a rodent dynamometer
In the past, computer controlled dynamometers have been used to perform isometric and isovelocity testing to study the effects of velocity, acceleration, and position on muscle injury. However, the effect of constant force on muscle injury in animals has not yet been studied.;A computer-controlled …
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Performance evaluation of exhaust aftertreatment devices used for emissions control on diesel engines employed in underground coal mines
… evaluation. Both eddy-current and water-brake dynamometers were used to load the engines according to an ISO 8-Mode test cycle. Experimental emissions data, sampled from a full-flow dilution tunnel, suggests that particulate traps can reduce the mass emission rates of particulate matter (DPM) …
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Experimental analysis of a haunched, skewed, reinforced concrete, rigid-frame bridge model
… and supporting reactions determined by suitable dynamometers. The vast amount of strain data was presented in tables. Part of it was converted into stresses and these integrated to find the internal reactive forces and moments at selected sections. However, the unknown behavior of concrete in …
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USING ADDITIONAL MEASURES OF HANDGRIP STRENGTH TO PREDICT AEROBIC CAPACITY IN WHEELCHAIR USERS
… handgrip strength (HGS) with electronic handgrip dynamometers has been shown to be a reliable measure of muscle function and a convenient assessment of overall muscle strength. This study aimed to determine the correlation of maximal HGS, HGS rate of force development, HGS fatigability, HGS …
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An experimental study of improvement of a micro hydro turbine performance
… of up to 0.15 m3/s at heads of up 25m. The two dynamometers that were used could adsorb pores to up to 25 kw and 50 kw respectively. An existing micro-turbine, the Agnew turbine, was selected for examination and possible improvement. The first possible improvement was the introduction of guide …
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Estimating Joint Torques on a Biodex System 3 Dynamometer
… dynamometer. Previous investigations using a dynamometers determined that measured moments from a dynamometer do not equate to the moment applied by the joint. Using Biodex System 3 dimensions and equipment, the proposed method corrects for gravity, acceleration and inertia moments, and …
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Aufklärung des Einflusses von C7 und C8 Aromaten auf die Partikelbildung im Abgas von Ottomotoren mit Direkteinspritzung sowie Entwicklung eines Screeningverfahrens zur Vorhersage der Partikelbildung
… and dynamic tests on engine and chassis dynamometers. Particle number emissions are recorded using a condensation particle counter. In contrast to larger, more resonance-stabilized aromatics, toluene and xylene exhibited altered reaction behavior. Literature reviews and own considerations …
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Effects of Movement Context on Reach-Grasp-Lift Motion and Grip Force after Stroke
… and submaximal grip force capacity using grip dynamometers. Unlike healthy controls and unlike the non-paretic side, the paretic side of people with hemiparesis produced more maximal force in the bilateral condition. In a submaximal task, however, the bilateral condition did not enhance the …
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Milling cutter software architecture for force and surface finish modeling
… cheaper and more practical alternative to table dynamometers for force model calibration purposes. Calibration of the force models with a motor power sensor is derived and their feasibility and accuracy is evaluated by a number of experimental cuts. It is shown that each force model performs much …
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Oberflächen-EMG-Untersuchungen zum Kontraktionsverhalten der Skelettmuskulatur unter lokaler Wärmeanwendung
… 50%MVC). Durch Einsatz eines neu entwickelten Dynamometers für die Mm. extensores carpi radialis konnte die Kraft dabei kontrolliert werden. Kraftreihenversuch: An jeweils 21 Probanden (11 Männer, 10 Frauen, 20-30 Jahre) in Versuchs- und Kontrollgruppe wurden für unterschiedlich starke …
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The assessment of movement demands and neuromuscular fatigue in female softball players
… with a suitable alternative to handheld dynamometers in field-based isometric testing. Study three documented changes in electromyographic amplitude and median frequency, isometric hip strength, and batted ball velocity of female softball players during a repeated batting protocol. …
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Influence of Oral Contraceptives on Bone Adaptations to Isokinetic Strength Training in Young Women
… velocity of 60 degrees/s using isokinetic dynamometers. BMD and EIMRTA were assessed using dual-energy x-ray absorptiometry (DXA) and mechanical response tissue analysis (MRTA), respectively. RESULTS: Total leg and arm muscular strength of the trained limb increased by 16% and 15%, …
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Electromechanical Design and Development of the Virginia Tech Roller Rig Testing Facility for Wheel-rail Contact Mechanics and Dynamics
… target location. The contact force measurement dynamometers can dynamically capture the contact forces to within 13.6N accuracy, for up to 10kN. The instantaneous torque in each driveline can be measured with better than 6.1Nm resolution. The VT Roller Rig Motion Programming Interface (MPI) is …
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Simulace obráběcích operací pomocí explicitní MKP
Táto diplomová práca diskutuje analýzu obrábania hliníkovej zliatiny s označením EN AW-6061 T6511, podľa ČSN EN 573-3. Prvá časť práce je teoretickým úvodom do merania rezných síl s aplikáciou rôznych prístupov. Práca ďalej rozoberá problematiku kvázistatického a dynamického správania sa materiálu …