TY - GEN
T1 - Ultrasonic guided wave propagation in a repaired stiffened composite panel
AU - Sikdar, Shirsendu
AU - Fiborek, Piotr
AU - Malinowski, Paweł
AU - Ostachowicz, Wiesław
N1 - Funding Information:
The authors acknowledge support by European Union's Horizon 2020 research and innovation program under grant agreement no 636494 – project 'Quality assurance concepts for adhesive bonding of aircraft composite structures by advanced NDT'. The authors also acknowledge the support from the Polish National Science Centre (NCN) under grant agreement number: UMO-2018/29/B/ST8/02904 in the frame of the OPUS 15 project.
Publisher Copyright:
© 2019 SPIE.
PY - 2019
Y1 - 2019
N2 - Stiffened carbon-fibre-reinforced composite structures are extensively used in the aerospace industry for constructing aircraft wings, fuselage, and several other structural components. These structures are often prone to damage due to ageing, cyclic loading and impact. The wave propagation based structural health monitoring technique is widely used for identifying such damage in these structures. This paper presents the analysis of guided wave propagation in a repaired stiffened composite aircraft-wing panel, in order to understand the wave propagation phenomenon in such complex multi-layered structure. Towards this, a coordinated theoretical, numerical and experimental investigation has been carried out. The dispersion curves for the structure are theoretically obtained by using a fast and efficient semi-analytical model to study the dispersion characteristics of the propagating guided waves at the high-frequency range. An extensive finite element based numerical simulation of guided wave propagation in the sample structure is carried out in ABAQUS. Based on the theoretically obtained dispersion curves, different wave modes in the signals are effectively identified. It is observed that the presence of a localized patch repair region in the structure significantly influences the wave mode amplitudes and propagation velocities. Laboratory experiments are then conducted, in order to verify the numerical simulation results. A good agreement is noticed between the simulation and experimental results, in all the cases studied. A series of parametric study is also numerically carried out, in order to check the influence of repaired region size on the propagating guided wave modes in the structure.
AB - Stiffened carbon-fibre-reinforced composite structures are extensively used in the aerospace industry for constructing aircraft wings, fuselage, and several other structural components. These structures are often prone to damage due to ageing, cyclic loading and impact. The wave propagation based structural health monitoring technique is widely used for identifying such damage in these structures. This paper presents the analysis of guided wave propagation in a repaired stiffened composite aircraft-wing panel, in order to understand the wave propagation phenomenon in such complex multi-layered structure. Towards this, a coordinated theoretical, numerical and experimental investigation has been carried out. The dispersion curves for the structure are theoretically obtained by using a fast and efficient semi-analytical model to study the dispersion characteristics of the propagating guided waves at the high-frequency range. An extensive finite element based numerical simulation of guided wave propagation in the sample structure is carried out in ABAQUS. Based on the theoretically obtained dispersion curves, different wave modes in the signals are effectively identified. It is observed that the presence of a localized patch repair region in the structure significantly influences the wave mode amplitudes and propagation velocities. Laboratory experiments are then conducted, in order to verify the numerical simulation results. A good agreement is noticed between the simulation and experimental results, in all the cases studied. A series of parametric study is also numerically carried out, in order to check the influence of repaired region size on the propagating guided wave modes in the structure.
KW - Dispersion
KW - Guided wave
KW - Patch repair
KW - Piezoelectric transducer
KW - Stiffened composite panel
UR - http://www.scopus.com/inward/record.url?scp=85069793328&partnerID=8YFLogxK
U2 - 10.1117/12.2514339
DO - 10.1117/12.2514339
M3 - Conference contribution
AN - SCOPUS:85069793328
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Health Monitoring of Structural and Biological Systems XIII
A2 - Fromme, Paul
A2 - Su, Zhongqing
PB - SPIE
T2 - Health Monitoring of Structural and Biological Systems XIII 2019
Y2 - 4 March 2019 through 7 March 2019
ER -