ABSTRACT
An effort has been made in the paper to find wear distribution for an aircraft’s structural component, the wear being provoked by a destructive process. Application of the characteristic function of the process has been suggested to meet this objective. An increment in the structural component’s wear has been introduced to formulate then, using the characteristic function and after some rearrangements, the partial differential equation. An analytical dependence for the characteristic function of the wear process is a solution to this equation. With the inverse transformation applied, the density function of the structural component’s wear has been found. Having found the density function, one can determine the structural component’s reliability and lifetime. The in-service collected or the life tests delivered data are used to attain this goal. Coefficients in this relationship are found using the likelihood function. Relationships formulated in this way have been applied to find the lifetime of an aircraft tyre.
