This paper presents results from a large scale study investigating the human response to vibration in residential environments. The main aim of this study was to derive exposure-response relationships for annoyance caused by vibration experienced within residential properties from sources outside of residents‘ control. The study took the form of a questionnaire administered to UK residents in t...

Honing is mostly the last step in the production process for precise elements and thus has to comply with high standards for the resulting quality regarding form, measurement and surface quality. Tolerances are currently even further reduced. Crucial for the ability of the honing process to reach the high quality is the process control. A new approach to a further improvement of the honing proc...

Wright Laboratory is evaluating a new vibration calibration technique that allows one person to perform end-to-end calibrations of a structural dynamics measurement system including mounted transducers, signal conditioning and recorder. This new technique uses an unsupported structural exciter(USE). This technique stimulates structural measurement transducers, inside of structures, with a measu...

ICA is applied to multi-channel vibration measurements of a 35 kW cage induction motor to fuse the information of several channels, and provide a robust and reliable fault detection routine. Independent components are found from the measurement data set with FastICA algorithm, and their PSD estimates are calculated with Welch’s method. A SVM based classification routine is applied to the PSD es...

Light beam scanning using a dispersive element and wavelength tuning is coupled with fiber-optic interferometry to realize a new surface measurement instrument. The instrument is capable of measuring nanoscale surface structures and form deviations. It features active vibration compensation and a small optical probe size that may be placed remotely from the main apparatus. Active vibration comp...

Adaptive feedforward broadband vibration (or noise) compensation is currently used when a correlated measurement with the disturbance is available. Most of the active vibration control systems feature an internal ”positive” mechanical feedback between the compensation system and the reference source (a correlated measurement with the disturbance). Such systems have often also a feedback control...

Newtonian fluid mechanics, in which the shear stress is proportional to the strain rate, is synonymous with the flow of simple liquids such as water. We report the measurement and theoretical verification of non-Newtonian, viscoelastic flow phenomena produced by the high-frequency (20 GHz) vibration of gold nanoparticles immersed in water-glycerol mixtures. The observed viscoelasticity is not d...

This paper investigates the use of capacitive proximity sensors as sources of contact-free feedback signal measurement for active vibration attenuation applications. An experimental laboratory device is introduced, which consists of a clamped cantilever beam and actuated by bonded piezoelectric actuators. A measurement model is created and experimentally verified for the assessment of beam tip ...