Abstract
The deformation characteristics and interfacial failure of a multilayered thin film solar panel involved in nanoscratching and diamond lapping were systematically investigated, with the aid of finite element modelling (FEM) analysis. The interfacial delamination modes generated in nanoscratching exhibited similar characteristics to those induced by diamond lapping. The FEM stress analysis revealed that the interfacial failure involved in the two processes was attributed to the significantly high shear stress induced at the interface between two dissimilar materials. It was also found that the roughness values of both scratched and lapped surfaces were related to the penetration depth for an individual layer material, regardless other testing conditions. This study demonstrates that nanoscratching is a valuable tool for understanding the deformation and failure mechanisms of thin film multilayered structures involved in abrasive machining.
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