Failure detection in a pressure vessel using acoustic emissions technology

Abstract

En este artículo se implementó la técnica de emisiones acústicas (EA) para monitorear diferentes escenariosde falla en cilindros de acero usados para almacenar gas licuado del petróleo (GLP). Los experimentos se llevaron a cabo en dos recipientes con defectos externos e internos sometidos a una prueba hidrostática. La severidad de las fallas fue aumentando progresivamente a través de los distintos escenarios con el fin de estudiar la actividad microsísmica. Las pruebas experimentales permitieron comprobar los efectos Káiser -Felicity y se observó que un aumento en la severidad de la falla representaba un incremento en la cantidad de hits detectados, cuentas y valores de energía. La evolución de la actividad acústica para los diferentes escenarios de falla determinó la integridad estructural de los contenedores, demostrándose que las EA permiten evaluar la condición global de los cilindros.

Strength Performance Evaluations of Vehicle Cylindrical LPG Tanks

“…The BP [23] and fracture failures [24] of the LPG cylinders were studied. Fault detection [25] and the wall thickness reductions [26] for the LPG cylinders were calculated. Metallographic crack propagations [27] and design analysis [28] of the LPG cylinders were studied using computer aided calculations.…”

Comparative Study of Dispersion Curves for LAMB Waves Using Analytical Solutions and Semi-Analytical Methods

“…These waves have been of great interest in recent years in the field of nondestructive testing (NDT) [2][3][4], surface corrosion damage in plates [5,6], Structural Health Monitoring (SHM) [7], Lamb wave interaction with defects [8], and materials characterization [9]. It is possible to inspect over long distances, covering the entire cross-section of the plate from a single probe position, including isolated or embedded areas, which are of interest in many engineering applications for corrosion monitoring [10], monitoring stress levels [11], or aerospace composites [12]. Multiple symmetric Sn or antisymmetric An (n = 0, 1, 2, .…”