TY - JOUR
T1 - Ultrasonic guided wave propagation and detection of high density core region in a honeycomb composite sandwich structure using embedded piezoelectric transducers
AU - Sikdar, Shirsendu
AU - Banerjee, Sauvik
N1 - Conference code: 8
PY - 2015/12/1
Y1 - 2015/12/1
N2 - An organized numerical and experimental study is carried out in order to understand ultrasonic guided wave (GW) propagation and interaction with a high density (HD) core region in a honeycomb composite sandwich structure (HCSS). Also the location of HD core region in a HCSS using embedded piezoelectric wafer transducer (PWTs) is investigated in this study. Due to complex structural characteristics, the study of guided wave (GW) propagation in HCSS with HD-core region inherently carries many challenges. Therefore, a three-dimensional (3D) numerical simulation of GW propagation in the HCSS with and without HD core region is carried out using embedded PWT network. It is observed that the presence of HD core significantly reduces the amplitude of the propagating GW modes. In order to verify the numerical results, experiments are conducted in the laboratory. A good agreement between the numerical and experimental results is observed, in all the cases studied. Finally, based on the change in amplitude of the received GW modes, the location of an unknown HD core region, within the PWT array is determined by applying a probability based signal difference coefficient (SDC) algorithm.
AB - An organized numerical and experimental study is carried out in order to understand ultrasonic guided wave (GW) propagation and interaction with a high density (HD) core region in a honeycomb composite sandwich structure (HCSS). Also the location of HD core region in a HCSS using embedded piezoelectric wafer transducer (PWTs) is investigated in this study. Due to complex structural characteristics, the study of guided wave (GW) propagation in HCSS with HD-core region inherently carries many challenges. Therefore, a three-dimensional (3D) numerical simulation of GW propagation in the HCSS with and without HD core region is carried out using embedded PWT network. It is observed that the presence of HD core significantly reduces the amplitude of the propagating GW modes. In order to verify the numerical results, experiments are conducted in the laboratory. A good agreement between the numerical and experimental results is observed, in all the cases studied. Finally, based on the change in amplitude of the received GW modes, the location of an unknown HD core region, within the PWT array is determined by applying a probability based signal difference coefficient (SDC) algorithm.
KW - Guided wave (GW)
KW - High density core
KW - Honeycomb composite sandwich structure (HCSS)
KW - Piezoelectric wafer transducer (PWT)
KW - NDT-wide
KW - Ultrasonic testing (UT)
UR - http://www.scopus.com/inward/record.url?scp=84958020036&partnerID=8YFLogxK
UR - https://www.ndt.net/search/docs.php3?date=2015-12-01&MainSource=194&issue=1&showForm=off
M3 - Conference article
AN - SCOPUS:84958020036
VL - 20
SP - 155
EP - 164
JO - E-Journal of Nondestructive Testing & Ultrasonics
JF - E-Journal of Nondestructive Testing & Ultrasonics
SN - 1435-4934
IS - 12
M1 - 18622
T2 - 8th International Workshop NDT in Progress 2015
Y2 - 12 October 2015 through 14 October 2015
ER -
