Patent ID: 9151697
Filing Date: 2015-10-06
Classification: B64D,G01L,G01M

Abstract:
1. A method for measuring passage of loadings through rear suspension attachments of an aircraft turbojet engine providing connection between a pylon and an engine casing, a rear attachment being made up of connecting yokes joined together via a plurality of connecting rods, the connecting yokes and the plurality of connecting rods constituting mounts having collinear openings in which hollow connecting shafts are instrumented, said method comprising: creating a component having at least first and second parts and a central bearer, all configured to come into contact with an inner wall of the corresponding hollow shaft, and having a first plurality of intermediate portions extending longitudinally from the central bearer to the first part without contact with the region between the parts and the central bearer and a second plurality of intermediate portions extending longitudinally from the central bearer to the second part without contact with the region between the parts and the central bearer, wherein each of adjacent intermediate portions of the first and second pluralities is spaced apart from one another by a circumferential gap and is disposed at a predetermined radial distance away from an axis of symmetry of the corresponding hollow shaft; instrumenting the first and second pluralities of intermediate portions for extensometric measurement, inserting the instrumented component into a region through which loadings pass to establish a plurality of contacts with the first and second parts and the central bearer, so that bending of the region induces bending of the intermediate portions of the component, and measuring flexural deformation of the region in shear planes from variations in length of the intermediate portions using the instrumentation of the component.