TY - GEN
T1 - Study of disbond effects in a jointed composite structure under variable ambient temperatures
AU - Sikdar, Shirsendu
AU - Ostachowicz, Wieslaw
AU - Kudela, Pawel
AU - Fiborek, Piotr
N1 - Funding Information:
The research work is funded by the Polish National Science Centre (NCN) under grant agreement number: DEC-2013/10/A/ST8/00071 in the frame of the MAESTRO 5 project and under grant agreement number: UMO-2016/23/N/ST8/01326 in the frame of the PRELUDIUM 12 project.
Publisher Copyright:
© 2018 SPIE.
PY - 2018/3/27
Y1 - 2018/3/27
N2 - Jointed composite structures (JCSs) are often used in the marine, automotive and civil engineering industries. In JCS, thin carbon-fiber-reinforced composite laminates are bonded with epoxy adhesives. But, disbonds can occur at the bondinterphase due to variable environmental conditions, cyclic loading, aging, fatigue, amongst others, which may lead to a substantial reduction in load-bearing capacity of the structural assembly. Hence, it is essential to identify these hidden disbonds, and the identification becomes more challenging due to frequent change in ambient temperatures. It is found that the ultrasonic guided wave propagation based inspection technique is suitable for inspection of such complex multilayered structures. The aim of this paper is to investigate the disbond effects on the propagating wave modes in the JCS under variable ambient temperatures. Towards this, a series of finite element based numerical simulation of guided Lamb wave propagation in JCS under variable temperature is carried out in ABAQUS using piezoelectric actuator-sensor transducers. Laboratory experiments are then conducted to investigate the disbond effects and a good agreement is found between the simulation and experimental results.
AB - Jointed composite structures (JCSs) are often used in the marine, automotive and civil engineering industries. In JCS, thin carbon-fiber-reinforced composite laminates are bonded with epoxy adhesives. But, disbonds can occur at the bondinterphase due to variable environmental conditions, cyclic loading, aging, fatigue, amongst others, which may lead to a substantial reduction in load-bearing capacity of the structural assembly. Hence, it is essential to identify these hidden disbonds, and the identification becomes more challenging due to frequent change in ambient temperatures. It is found that the ultrasonic guided wave propagation based inspection technique is suitable for inspection of such complex multilayered structures. The aim of this paper is to investigate the disbond effects on the propagating wave modes in the JCS under variable ambient temperatures. Towards this, a series of finite element based numerical simulation of guided Lamb wave propagation in JCS under variable temperature is carried out in ABAQUS using piezoelectric actuator-sensor transducers. Laboratory experiments are then conducted to investigate the disbond effects and a good agreement is found between the simulation and experimental results.
KW - disbond
KW - dispersion
KW - guided wave
KW - Jointed Composite Structure
KW - piezoelectric transducer
UR - http://www.scopus.com/inward/record.url?scp=85049595906&partnerID=8YFLogxK
U2 - 10.1117/12.2295928
DO - 10.1117/12.2295928
M3 - Conference contribution
AN - SCOPUS:85049595906
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018
A2 - Wang, Kon-Well
A2 - Sohn, Hoon
A2 - Lynch, Jerome P.
PB - SPIE
T2 - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018
Y2 - 5 March 2018 through 8 March 2018
ER -