Deconvolution of ultrasonic echoes using Bernoulli-Gaussian processes for composite materials inspection

This is particularly useful when sizing for defects close to the surface, where a normal-incidence pulse-echo ultrasonic method has problems, particularly when the depth of the defect

A simulation study on defect detection was realised, and results were validated experimentally on Carbon fiber-reinforced polymer multi-layered composite materials (CFRP) with

Abstract: In this paper, signal processing techniques are tested for their ability to resolve echoes associated with delaminations in carbon fiber-reinforced polymer

Standard deconvolution techniques suppose that the wavelet is minimum phase but generally make no assumptions about the amplitude distribution of the primary reflection

This algorithm iterates back and forth using the current estimated parameter in order to decompose the observed data and thus to increase the likelihood of the next

Thereafter, we validate all simulated results by experimental results obtained on composite material with and without delamination defects. Keywords : Ultrasonic NDE,

To assess the influence of the cold spray process on the conductivity of pure copper coatings, a spherical non-oxidized copper was sprayed directly onto PEEK substrates, Figure

Third, still with spherical particles, the particle surface flow rate and the gas parameters had an equal influence on coating build-up.. It was possible