Image driven analysis of plates coated by cold spray coating process using a layerwise approach
| Autor: | J. Infante Barbosa, S. B. S. Kalsi, Maria Amélia Ramos Loja, A. F. Mota, H. Singh |
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| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Materials science Composite number Gas dynamic cold spray 02 engineering and technology Substrate (printing) engineering.material Layerwise 021001 nanoscience & nanotechnology Vibration Stress (mechanics) Porosities 020303 mechanical engineering & transports Image processing 0203 mechanical engineering Coating Graded material Volume fraction Ceramics and Composites engineering Cold spray coating Composite material 0210 nano-technology Civil and Structural Engineering |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 0263-8223 |
| Popis: | Functionally graded materials are characterized by its continuous spatial properties’ variation which provides them a better behaviour concerning strain and stress transition, hence avoiding the abrupt changes typical of composite fibre reinforced laminates. Although manufacturing systems and techniques used in the production of such materials has evolved significantly, porosities may arise as non-desirable characteristic. Other situations exist where pores are desirable as they may contribute to a specific better performance. Regardless the specific application, it is expected that mechanical properties of graded material will be affected by the existence of porosities. This work presents a study on the static and free vibrations behaviour of plates constituted by a substrate coated by the cold spray coating process. This coating presents inherent porosities which distribution matters to characterize in order to assess its influence on the plate behaviour. To this purpose, a layerwise approach considering the first order shear deformation theory was used, in order to be able to carry out a more representative study of the system substrate-coating. The results obtained show that for a small relation between the coating thickness and the plate's total thickness, the relative deviations obtained, considering the porosity-free coating plate as reference, denotes no evidence of significant influence of the number of terms on the volume fraction approximation, for the static and free vibrations results. |
| Databáze: | OpenAIRE |
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