This work was supported by the National Natural Science Foundation of China(No.51705082);the Engineering Research Center for CAD/CAM of Fujian Provincial Colleges and Universities(No.K201705);the Development Center of Scientific and Educational Park of Fuzhou University in the City of Jinjiang(No.2019-JJFDKY-11);Fuzhou University Testing Fund of Precious Apparatus(No.2020T017).
The scratch test is used for quality control mostly in phenomenological ways,and whether fracture toughness can be obtained from this test is still a matter of debate requiring further elucidation.In this paper,values...