Alenia Aermacchi S.p.a.

Alenia Aeronautica S.p.a.

Carlo Arnone

Sabato Inserra Imparato

Vincenzo De Vita

Marco Raffone

Alberto Russolillo

Giuseppe Lauria

Sergio Recchia

Antonio Fiore

Felice Grosso

Vincenzo Pelusi

Alfonso Delli Carri

A method for producing a closed-section portion of an aircraft wherein a strain gauge is glued on a first face of a flat tape that, in turn, is fastened on a face of a tool comprising a rigid elongated body covered by an extensible sack. The tool supporting the tape is arranged in a cavity of an aircraft structure. A vacuum is then created to obtain the expansion of the vacuum sack and perform the pressure gluing of the tape onto a wall of said cavity. The tool is subsequently extracted from the cavity. Upon conclusion of these operations, the tape is integrally fastened onto a wall of the cavity so that any deformation applied to this wall is transmitted to said strain gauge.

Method for producing a closed-section portion of an aircraft provided with deformation sensors

A hollow manufactured body has at least one wall of non-ferromagnetic material with an outer surface and an inner surface facing a cavity of the body. Two mutually magnetically attracted sliders are positioned on the inner and outer surfaces. The outer slider is moved manually across the outer surface to a predetermined point where the wall thickness is to be detected; the inner slider on the inner surface follows the movements of the outer slider due to the effect of the magnetic attraction. A transducer on the outer slider is used to measure the force required to move a magnet away from the outer surface of the wall. The value of the thickness of the wall at the predetermined point is then derived from the measured force.

Method for detecting the thickness of the walls of hollow manufactured bodies made from non-ferromagnetic material

Growing community of inventors

Venegono Superiore, Italy

Carlo Arnone