Method of assembling and checking a double-resonator...

Details Method of assembling and checking a double-resonator... Method of assembling and checking a double-resonator...

G - Physics

10

K

G10K 11/172 (2006.01)

Patent

CA 2481727

The invention relates to a method of producing and checking a double-resonator honeycomb acoustic panel. The aforementioned panel is characterised in that, following the assembly of the two honeycombs (30, 50) and the partition (40) and prior to the assembly of at least one of the two liners (20, 60), the perforation rate of said partition (42) is checked by scanning same with a digital camera (84). The successive images (92) thus obtained are transmitted to a computer (94) which determines the perforation rate T of the partition (40) by applying formula T = N1 / N, wherein N1 is the number of pixels (100) that correspond to the holes (42b) and N is the number of pixels in the image (92).

L'invention propose un procédé de fabrication et de contrôle d'un panneau acoustique à double résonateur en nid d'abeille. Un tel panneau est remarquable en ce que postérieurement à l'assemblage des deux nids d'abeilles (30, 50) avec le septum (40) et préalablement à l'assemblage de l'une au moins des deux peaux (20, 60), on contrôle du taux de perforation du septum (42) en scannant le septum (40) avec une caméra (84) numérique, les images successives (92) ainsi obtenues étant transmises à un ordinateur (94), l'ordinateur (94) établissant le taux de perforation T du septum (40) en appliquant la formule T = N1 / N dans laquelle N1 est le nombre de pixels (100) correspondants aux trous dégagés (42b) et N le nombre de pixels de l'image (92).

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