We propose a spectroscopic approach to probe tiny vibrations of a nanomechanical resonator (NAMR), which may reveal classical or quantum behavior depending on the decoherence-inducing environment. Our proposal is based on the detection of the voltage-fluctuation spectrum in a superconducting transmission line resonator (TLR), which is indirectly coupled to the NAMR via a controllable Josephson ...

In diagnosing mechanical faults of rotating machinery, it is very important to know the vibration feature of the machine with various forms of fault. A rotor system with fault is generally a complicated non-linear vibrating system. Its vibration is in a very complex form. Rotating machinery is very popular in industrial applications. Most of the mechanical failures are due to vibrations. It is ...

Š. Salokyová, J. Dobránsky, A. Panda, Faculty of Manufacturing Technologies with a seat in Prešov, Technical University of Košice, Slovak Republic Article deals with the examination of the effect of cutting parameters on the occurrence and size of mechanical vibration on three selected measured points during the processing of chrome steel. It also includes execution, experiment evaluation in th...

Torsional vibrations and resonance problems with synchronous machines are most frequently encountered in rotor systems with long shafts and large inertias constituting a weakly damped mechanical resonator which exhibits a low resonance frequency. It is impossible to obtain a effective mechanical damping for these torsional vibrations, but by using a power electronics device and an inductive or ...

This paper deals on converting mechanical impact on piezoelectric plate into electrical energy and using this harvested energy to power a wireless sensor node (WSN). Here we discuss on the power processing unit which consists of rectification, storage and regulation of voltage. The wireless sensor node senses the ambient vibrations around it and uses the harvested energy to send unique identifi...

Service reliability in electrical power networks is of crucial importance and depends on the quality and availability of electrical equipment. Operation resources like power transformers have to be considered, representing the intersections of energy networks. Regarding the age of power transformers e.g. used in the German grid surveillance is gaining importance. An approach for evaluating the ...

Inspired by the mechanisms of bone conduction transmission, we present a novel sensor and actuation system that enables a smartwatch to securely communicate with a peripheral touch device, such as a smartphone. Our system regards hand structures as a mechanical waveguide that transmits particular signals through mechanical waves. As a signal, we used high-frequency vibrations (18.0-20.0 kHz) so...

The aim of this study was to evaluate the in̄uence of vibration on the mechanical properties of arm ̄exors. A group of 12 international level boxers, all members of the Italian national team, voluntarily participated in the experiment: all were engaged in regular boxing training. At the beginning of the study they were tested whilst performing forearm ̄exion with an extra load equal to 5% of the ...

Mechanical vibration has been used in sports training to increase strength performance and as preventive treatment for such diseases as osteoporosis and Parkinson’s disease. The use of vibration is based on fact that exposure of skeletal muscular system to mechanical vibrations may create a muscle contraction reflex called tonical vibration reflex (TVR). The aim of the present study was to veri...

BACKGROUND Non-pharmacological options for symptomatic management of cough are desired. Although chest wall mechanical vibration is known to ameliorate cough reflex sensitivity, the effect of mechanical vibrations on perceptions of urge-to-cough has not been studied. Therefore, we investigated the effect of mechanical vibration of cervical trachea, chest wall and femoral muscle on cough reflex ...