This paper concerns the development of ultrasonic intermodulation as a method of robustly
detecting cracks in engineering components. The bispectrum signal processing technique is …

Abstract Using Non-equilibrium Molecular Dynamics (NEMD) simulations, we study the
statistical properties of an atomic fluid undergoing planar Couette flow, in which particles …

This paper presents comparison of two basic methods of ultrasonic non-linear modulation
spectroscopy and proposes new possibilities for rising of sensitivity. The rising of sensitivity …

The pressure surge in the draft tube is one of the main causes of instability and power losses
in hydro power plants. This fault usually happens when the turbine operates in part load …

The sustainable future of aerospace industry in large part relies on two factors:(i)
development of advanced damage tolerant materials and (ii) the ability to detect and …

The nondestructive testing by ultrasound nonlinear modulation spectroscopy has two basic
variants of realisation. The ultrasound excitation uses harmonic signals with relatively near …

Fluids treated as a discrete collection of particles rather than as a continuum, exhibit exotic
properties under shear at sub-continuum scales. For instance, at a critical strain-rate, the …

In this work it is proposed to use the skewness of the acceleration of a cracked beam excited
by a load modelled as Gaussian White Noise to detect the crack damage. Numerical …