Delong MA, Yiwang BAO, Detian WAN, Yan QIU, Dezhi ZHENG, Shuai FU. Pre-crack and Fracture Toughness Evaluation of Ceramic Thin Plates [J]. Journal of Inorganic Materials, 2021, 36(7): 733
- Journal of Inorganic Materials
- Vol. 36, Issue 7, 733 (2021)
1. Schematic diagram of pre-cracking in strain control method
2. Schematic diagram of test piece composition
3. Width of tensile zone decreases with increase of brass beam width
4. Schematic diagram of pre-cracking by four-point bending test in horizontal direction
5. Microscopic images of composite bonded by ceramic thin plate and brass beam
6. Diagram of pre-cracking by four-point bending test under tool microscope
7. Schematic diagram of three-point bending test of fracture toughness
8. In- situ observation of crack initiation and extension in Al2O3 plate
9. Pre-crack by three-point bending test
10. Pre-crack initial length by using brass beam of different widths
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Table 1. Basic mechanical properties of three types of ceramic thin plates
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Table 2. Fracture toughness of ceramic thin plate and ceramic block
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