| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Pickering, Simon G.
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2017Distance Estimation by Fusing Radar and Monocular Camera with Kalman Filter
- 2017Nonlinear imaging of damage in composite structures using sparse ultrasonic sensor arrayscitations
- 2014Nonlinear damage detection in composite structures using bispectral analysiscitations
- 2014Analysis of the delamination detection capabilities of pulse stimulated thermographic nondestructive testing techniques
- 2014Failure analysis of impact-damaged/hygrothermally aged fiber-reinforced polymer matrix composite joints subjected to bend loading
- 2014Analysis of the defect detection capabilities of pulse stimulated thermographic NDE techniquescitations
- 2013Transient thermography testing of unpainted thermal barrier coating (TBC) systemscitations
- 2013LED optical excitation for the long pulse and lock-in thermographic techniquescitations
- 2012Damage assessment of impact damages on CFRP with laser shearography
- 2011A comparison of the pulsed, lock-in and frequency modulated thermography nondestructive evaluation techniquescitations
- 2010Comparison of the defect detection capabilities of flash thermography and vibration excitation shearographycitations
Places of action
| Organizations | Location | People |
|---|
conferencepaper
Nonlinear damage detection in composite structures using bispectral analysis
Abstract
Literature offers a quantitative number of diagnostic methods that can continuously provide detailed information of the material defects and damages in aerospace and civil engineering applications. Indeed, low velocity impact damages can considerably degrade the integrity of structural components and, if not detected, they can result in catastrophic failure conditions. This paper presents a nonlinear Structural Health Monitoring (SHM) method, based on ultrasonic guided waves (GW), for the detection of the nonlinear signature in a damaged composite structure. The proposed technique, based on a bispectral analysis of ultrasonic input waveforms, allows for the evaluation of the nonlinear response due to the presence of cracks and delaminations. Indeed, such a methodology was used to characterize the nonlinear behaviour of the structure, by exploiting the frequency mixing of the original waveform acquired from a sparse array of sensors. The robustness of bispectral analysis was experimentally demonstrated on a damaged carbon fibre reinforce plastic (CFRP) composite panel, and the nonlinear source was retrieved with a high level of accuracy. Unlike other linear and nonlinear ultrasonic methods for damage detection, this methodology does not require any baseline with the undamaged structure for the evaluation of the nonlinear source, nor a priori knowledge of the mechanical properties of the specimen. Moreover, bispectral analysis can be considered as a nonlinear elastic wave spectroscopy (NEWS) technique for materials showing either classical or non-classical nonlinear behaviour. © 2014 SPIE.