A review of non-destructive testing of composite materials

Application of frequency-domain algorithms in ultrasound imaging of composite materials

“…Application of these structures requires nondestructive testing that enables to reduce the risk of accidents. One of the methods, which could be used for this purpose, is ultrasonic nondestructive testing [1]. Furthermore, advanced ultrasonic imaging algorithms allow accurate determination of defect and its size, shape and location in the controlled object.…”

Inherent acoustic nonlinearity of fiber reinforced composites

“…In the recent decade techniques such as ultrasonics, thermography, radiography etc. have been extended for composites in an attempt to create such a catalogue [1,2]. Ultrasonics stands out as one of the best NDE techniques for composites and has been explored by many researchers including the use of guided waves [3][4][5][6][7][8].…”

Fatigue residual strength of circular laminate graphite–epoxy composite plates damaged by transverse load

“…Damage was induced by quasi-static transverse loads that were supposed to simulate low velocity impacts [8][9][10][11][12][13]. The Acoustic Emission technique [14][15][16][17][18] was used, during the quasi-static transverse loading tests, in order to monitor the material damage progress and to measure the intensity of the emitted acoustic energy, which is required by the method proposed in [17], for the estimation of the quasi-static residual ultimate tensile strength (σ U * ) of the laminates. Concerning the AE physics, when components are loaded stress redistributions can occur, due to irreversible phenomena caused by damage mechanisms.…”