Real-time Algorithm to Classify AE Events of Lamb W time Algorithm to Classify AE Events of Lamb Waves in CFRP time Algorithm to Classify AE Events

Internal damage like delaminations is one of the most composite laminates not detectable through visual inspection. Its detection is one of the most attractive challenges in the Structural Health Monitoring. Acoustic Emission is a promising SHM technique for achieving that. AE Lamb waves o good approach to evaluate this kind of materials, but due to the combination of different wave propagation modes, reflections, dispersion effects, attenuation and constructive/destructives interferences, its separation becomes a major problem. It is well known that delamination produces mechanical displacement micro pulses outside the plane (OP), while matrix micro breakage produce micro that the A0 mode is favo excitations. From these previous assumptions, this work proposes an algorithm to classify the AE events into the three damage mechanisms. However, in general, both modes will be present simultaneous major issue of the algorithm proposed here consists in an efficient separation of both modes, trying to avoid such a collateral factors as reflections or influence of the threshold used for AE detection. Algorithm has been entirely implemented using the ECP code of the AEVisual software, so it can be run in real tests, in which only a damage mechanism is generated, and also in three bending tests of compos supplied by Airbus-Spain. Internal damage like delaminations is one of the most critical damage in composite laminates not detectable through visual inspection. Its detection is one of the most attractive challenges in the Structural Health Monitoring. Acoustic Emission is a promising SHM technique for achieving that. AE Lamb waves o good approach to evaluate this kind of materials, but due to the combination of different wave propagation modes, reflections, dispersion effects, attenuation and constructive/destructives interferences, its separation becomes a major problem. is well known that delamination produces mechanical displacement micro pulses outside the plane (OP), while matrix micro-cracking and tensile fiber breakage produce micro-pulses inside the plane (IP). Moreover, it has been verified that the A0 mode is favored by OP excitations, while the S0 mode is favored by IP excitations. From these previous assumptions, this work proposes an algorithm to classify the AE events into the three damage mechanisms. However, in general, both modes will be present simultaneously in a particular AE signal, reason why the major issue of the algorithm proposed here consists in an efficient separation of both modes, trying to avoid such a collateral factors as reflections or influence of the threshold used for AE detection. thm has been entirely implemented using the ECP code of the AEVisual software, so it can be run in real-time. The paper proposes its validation in control tests, in which only a damage mechanism is generated, and also in three bending tests of composite samples with and without artificial delaminations Spain. critical damage in composite laminates not detectable through visual inspection. Its detection is one of the most attractive challenges in the Structural Health Monitoring. Acoustic Emission is a promising SHM technique for achieving that. AE Lamb waves offer a good approach to evaluate this kind of materials, but due to the combination of different wave propagation modes, reflections, dispersion effects, attenuation and constructive/destructives interferences, its separation becomes a major problem. is well known that delamination produces mechanical displacement micro-cracking and tensile fiber pulses inside the plane (IP). Moreover, it has been verified red by OP excitations, while the S0 mode is favored by IP excitations. From these previous assumptions, this work proposes an algorithm to classify the AE events into the three damage mechanisms. However, in general, both ly in a particular AE signal, reason why the major issue of the algorithm proposed here consists in an efficient separation of both modes, trying to avoid such a collateral factors as reflections or influence of the thm has been entirely implemented using the ECP code of the AEVisual time. The paper proposes its validation in control tests, in which only a damage mechanism is generated, and also in three-point ite samples with and without artificial delaminations