T/CSAA 23-2023 The evaluation requirements for composite material skin after laser removal of paint in civil aircraft involve materials and processes

Scope

Scope: This document specifies the requirements for evaluating the physical and chemical properties and mechanical performance of composite substrates and their surface paint layers after laser removal of paint layers on civilian aircraft composite skins, as well as the basic requirements for laser paint removal technology. This document is applicable to laser removal of paint layers on civilian aircraft composite skins. The material and process evaluation requirements for military aircraft composite skins after laser paint removal can be referenced for use. Main technical contents: 1 Scope 2 Normative references 3 Terms and definitions 4 General principles 5 Evaluation index requirements 5.1 Composite substrates 5.2 Controllability 5.3 Surface microscopic properties 5.4 Paint layer residue 5.5 Recoatability 6 Test methods 6.1 Mechanical properties of composite substrates 6.2 Surface roughness 6.3 Fiber breakage 6.4 Layer separation accuracy 6.5 Thickness accuracy 6.6 Surface microscopic properties 6.7 Paint layer residue rate 6.8 Surface cleanliness 6.9 Adhesion 6.10 Durability 7 Result evaluation 7.1 Process stability 7.2 Process effect 7.3 Evaluation requirements

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