Method for estimating the level of damage to an element of an assembly, and predictive maintenance method implemented on the basis of such an estimation method

Abstract

A method for estimating the level of damage to an element of an assembly of an electronic component to an electronic board, of an electronic component to an electronic board including a printed circuit board and at least one gasket having viscoplastic behavior made between the printed circuit board and the electronic component, the method including the following steps: supplying the assembly, voluntarily or involuntarily exerting an external stress (γext), repeated and variable over time, on the electronic board so as to generate a change in the viscoplastic behavior of the gasket, estimating a time constant (τ) of an electrical quantity of the electronic component or of an internal component of the electronic board located inside the printed circuit board and facing the gasket between two instants (t0, t1) during the viscoplastic deformation of the gasket, estimating a level of damage to the element from the estimated time constant (τ).

Dependencies are inferred from the claim text.