Wire and arc additive manufacturing for strengthening of metallic components

• DOI: 10.1016/j.tws.2024.112074
• Publication Date: 2024-06-27T18:24:18Z
• Authors: H. Dahaghin; M. Motavalli; H. Moshayedi; S.M. Zahrai; E. Ghafoori
• Keywords: Deposition

Wire and arc additive manufacturing (WAAM), also known as wire directed energy deposition (WA-DED), offers valuable capabilities not only for but strengthening repairing aging components. This paper employs the finite element (FE) method to investigate influence of parameters on efficiency damaged steel plates strengthened by WAAM material. The study calibrates inherent strain (ISM) with thermo-mechanical analysis accurately predict residual stresses (RS) in manufactured samples, demonstrating that ISM enhances computational while effectively predicting RS. It thoroughly examines key such direction, maximum thickness, geometric configuration material, including shapes in-plane dimensions. results indicate perpendicular loading direction provides better performance compared along it induces less normal through-thickness stresses. Furthermore, this research determines optimal thickness showing an increase can lead higher tensile at interface between newly material underlying base plate. establishes dimensions suggest placing near area gradually decreasing two directions ensure sufficient stiffness around cracked area, avoiding abrupt change stiffness. approach generates appropriate compressive crack tip decreases further illustrates employing a proper printing strategy without subsequent machining process reduce stress plate minimizing usage.