The PROVING research project aims to develop, validate, and verify a streamlined, robust verification and approval methodology for generative/additively manufactured aerospace structural components.
What is new is that instead of the current deterministic verification, a statistical-probabilistic approach is being pursued, which has significant advantages, especially for components from additive manufacturing processes such as fibre plastic composites, and which, despite its novelty as an "Accepted Means of Compliance (AMC)", fulfils the relevant approval requirements CS-22, CS-23 and CS-25.
The focus is on the development, validation, and verification of virtual verification methods, including digital process control and documentation. To this end, analytical and numerical methods for modelling and simulating the material and structural behaviour during the manufacturing process, taking into account imperfections and under structural load, will be developed and validated via a sample and test programme.
The streamlined and robust verification and approval methodology developed within the framework of PROVING will be applied and evaluated as an example on a selected, representative aerospace structural component made of generatively manufactured polymer matrix fibre composites in out-of-autoclave technology (OoA) and additively manufactured metals (Additive Manufacturing, AM).
Research Project details
EASA agreement signed: 28/03/2022
EASA contact: research [at] easa.europa.eu (research[at]easa[dot]europa[dot]eu)