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Phased‐array transducers for damage detection in aircraft structures *
Author(s) -
PEÑAMACIAS J.,
PÉREZ M. C.,
MARTÍNEZOÑA R.,
GÓMEZULLATE Y.,
DE ESPINOSA F. MONTERO,
KAWIECKI G.
Publication year - 2008
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2008.01251.x
Subject(s) - phased array , transducer , composite number , structural engineering , engineering , acoustics , component (thermodynamics) , materials science , electrical engineering , composite material , physics , antenna (radio) , thermodynamics
The work outlined in this paper is a part of a wider effort aimed at the development of a built‐in system for real‐time damage detection in aircraft structures. The objective of this study was to show the feasibility of applying low‐frequency phased‐array transducers for damage detection in metallic structures with bonded repairs and, also, in structures made of composite materials. This paper is divided into two main portions: a component dedicated to the monitoring of crack growth under a simulated composite repair and a part describing an introductory study done for composite panels monitoring. The data acquisition system is also described. The results of the study described in this paper indicate that a low‐frequency, built‐in phased‐array system can successfully estimate the length of a crack growing under a bonded repair. Satisfactory results of monitoring simulated defects in composite structures are presented, as well.