METHOD AND SYSTEM OF THERMOGRAPHIC NON-DESTRUCTIVE INSPECTION FOR DETECTING AND MEASURING VOLUMETRIC DEFECTS IN COMPOSITE MATERIAL STRUCTURES

Torna indietro

Abstract

A thermographic non-destructive inspection method of a structure (4), comprising the steps of: generating a modulated thermal wave in the direction of the structure; generating a temperature signal identifying a phase shift between the modulated thermal wave and a return thermal wave emitted from the structure; processing the temperature signal to obtain a first sub-signal related to the phase of the first harmonic of the temperature signal; identifying a first dimension (L) of said defect as a function of the phase of the first harmonic of the temperature signal; calculating a first and a second intermediate parameter, ΔΦ1 for the first harmonic and ΔΦ2 for the third harmonic of the temperature signal, by calculating the difference, in degrees, between the phase value inside the zone with a defect and the phase value, absolute or mean of a plurality of points, of the undamaged zone close to the defect; and identifying a second dimension (P1; P2) of the defect as a function of the first dimension (L) and of the intermediate parameters ΔΦ1 and ΔΦ2.

Classe Tecnologica

G - Physics

Patent Office

European Patent Office

Numero Deposito

EP 3121579

Anno Deposito

2015

Anno Concessione

2017

Inventori Pugliesi

  • Galieti Umberto
  • Palumbo Davide
  • Cerrone Gianpiero

Tutti gli inventori

  • Maione Giacomo
  • Incarnato Ciro
  • Ciliberto Antonio
  • Galieti Umberto
  • Palumbo Davide
  • Cerrone Gianpiero

Titolari pugliesi

  • Non ci sono titolari pugliesi

Tutti i titolari

  • Leonardo S.p.A.