IDENTIFICATION OF VIBRATIONS AT MISALIGNMENT

Vibrations at surfaces.

Identification of mode couplings in nonlinear vibrations of the steelpan

The vibrations and sounds produced by two notes of a double second steelpan are investigated, the main objective being to quantify the nonlinear energy exchanges occurring between vibration modes that are responsible of the peculiar sound of the instrument. A modal analysis first reveals the particular tuning of the modes and the systematic occurence of degenerate modes, from the second one, th...

Vibrations and health effects at sea.

Survey of Nonlinear Detection and Identification Techniques for Experimental Vibrations

Nonlinear structural dynamic system identification is often more a subjective art than it is a direct application of some particular method in systems theory. The nonlinear problem is subjective because although there are many analytical methods from which to choose, there is no general approach to detect, characterise, or model input-output relationships in nonlinear systems. This paper is a s...

T2K Beam Misalignment Monte Carlo Studies at the Near Detector

The T2K neutrino oscillation experiment is scheduled to begin commissioning in 2009. The experiment uses a simulation of the neutrino beam to produce predictions of the relationship between observed events in the near (control) detector and the far detector, Super-Kamiokande. This correction is affected by the alignment of the proton beam on the target. We report on the results of a simulation-...