• Aucun résultat trouvé

HOLLOW CIRCULAR CYLINDER: APPLICATION TO NON DESTRUCTIVE TESTING

N/A
N/A
Info
Télécharger
Protected

Academic year: 2021

Partager "HOLLOW CIRCULAR CYLINDER: APPLICATION TO NON DESTRUCTIVE TESTING"

Copied!
1
0
0

Chargement.... (Voir le texte intégral maintenant)

Texte intégral

(1)

HOLLOW CIRCULAR

CYLINDER: APPLICATION TO NON DESTRUCTIVE TESTING ∗

Sonia DJILI

1

, Fouad BOUBENIDER

2

, Boukazouha Faiza

1

, Badidi Bouda Ali

1

1

Scientific and Technical Center of Research on Welding and Control, BP 64, route de Daly Brahim. Ch´ eraga, 16000 Algies. Algeria.

2

Laboratory of physics of materials, University of sciences and technology Houari Boumedienne B.P. 32 El Allia- Bab Ezzouar, 16111 Algiers. Algeria.

Abstract

Advanced research into non destructive control of industrial pipe works provides several acoustical methods for inspection of their struc- tural integrity. The use of guided waves is one possible solution to detect and identify different flaws. In this paper, we are studying the propagation of guided waves in a tube and the correlation of these last by defects of surface. The dispersion curves of symmetrical modes (lon- gitudinal and torsion) and asymmetrical mode (inflection) have been established. The mode chosen to generate it the second longitudinal mode, for this mode the radial element of displacement is very weak in front of the axial element in the point produced frequency thickness equal to 0.99 MHz.mm where from a weak attenuation, according to our experimental results the L (0, 2) mode is sensitive to the depth variation and the defect circumference.

Keyword: Guided waves Hollow cylindre NDT.

∗3rd International Conference on Integrity, Reliability and Failure2009

1

Références

Télécharger maintenant ( PDF - 1 Page - 95.67 KB )

Documents relatifs

Synucleinopathy alters nanoscale organization and diffusion in the brain extracellular space through hyaluronan remodeling

relative diffusivity maps reveal a heterogeneous ECS in the SN, with increased nanoscale diffusion after LB-induced neurodegeneration. f Maps of local ECS dimensions in the SN of

La nouvelle école du reportage polonais

Dans le monde e´ditorial franc¸ais, le reportage polonais s’est fait une place sous la de´nomination « la nouvelle e´cole du reportage polonais ».. Cette de´nomi- nation souligne

Bleaching induced tooth sensitivity: do the existing enamel craze lines increase sensitivity? A clinical study

In total, 23 healthy subjects (17 women and 6 men) could fulfill the inclusion criteria and be recruited to par- ticipate in the study from 62 interviewed subjects. The

Numerical modeling for the electromagnetic non-destructive evaluation: Application to the non-destructive evaluation of concrete.

Chapter 2 reviews the electromagnetic basic equations to simulate the radar assessment of concrete structures and the most commonly used numerical techniques to model the

Evidence for the wobbling mode in nuclei

Around the relevant angular-momentum region, a wobbling mode, a 苷 21兾2, based on TSD1 can appear energetically lower than the a u 苷 21兾2 signature partner of the i 13 兾2

Dielectric studies of Goldstone mode and soft mode in the vicinity of the A-C* transition

where the subscripts s and G denote soft mode and Goldstone mode respectively f and he are the relaxation frequency and dielectnc strengths of the mode, K~ is the elastic constant,

Hollow circular cylinder: application to non destructive testing

The mode chosen to generate it the second longitudinal mode, for this mode the radial element of displacement is very weak in front of the axial element in the point produced

Validity of the transfer Hamiltonian approach : application to the STM spectroscopic mode

We have presented a non-perturbative Green function approach, relating the value of the tunneling current in a junction to quantities characteristic of the electronic