TY - RPRT TI - Diffraction aperture non-ideal behaviour of air coupled transducers array elements designed for NDT. AU - J L Prego Borges AU - F Montero de Espinosa AU - J Salazar AU - J Garcia-Alvarez AU - J A Chávez AU - A Turó AU - M J Garcia-Hernandez PY - 2006 DO - 10.1016/j.ultras.2006.05.125 UR - https://pubmed.ncbi.nlm.nih.gov/16797644/ ID - 16797644 ER -