TY - GEN
T1 - Non-linearly phased 2-D array transducers arranged on a cylindrical-polar grid for real time guided wave mode control and steering
AU - Kannajosyula, H.
AU - Lissenden, III, Clifford Jesse
AU - Rose, Joseph Lawrence
PY - 2012/7/13
Y1 - 2012/7/13
N2 - Ultrasonic guided wave mode control and steering using phased array transducers (PATs) is studied. A PAT with elements arranged on a cylindrical-polar grid is proposed to overcome the problem of large side-lodes associated with a rectangular grid PAT. The PAT is visualized as a spatio-temporal filter to calculate phase delays. Wavenumber bands resulting from the radial rows enable constructive interfere only in the vicinity of the desired wavenumber and angle of propagation. Finite element simulations are presented to study PAT performance.
AB - Ultrasonic guided wave mode control and steering using phased array transducers (PATs) is studied. A PAT with elements arranged on a cylindrical-polar grid is proposed to overcome the problem of large side-lodes associated with a rectangular grid PAT. The PAT is visualized as a spatio-temporal filter to calculate phase delays. Wavenumber bands resulting from the radial rows enable constructive interfere only in the vicinity of the desired wavenumber and angle of propagation. Finite element simulations are presented to study PAT performance.
UR - http://www.scopus.com/inward/record.url?scp=84863607652&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863607652&partnerID=8YFLogxK
U2 - 10.1063/1.4716325
DO - 10.1063/1.4716325
M3 - Conference contribution
AN - SCOPUS:84863607652
SN - 9780735410138
T3 - AIP Conference Proceedings
SP - 945
EP - 952
BT - Review of Progress in Quantitative Nondestructive Evaluation
T2 - 38th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE
Y2 - 17 July 2011 through 22 July 2011
ER -