Hertzian testing of ceramics
The present paper reviews recent work on the fracture mechanics of ring crack formation from pre-existing small surface cracks when a hard sphere is pressed elastically against a hard surface. It summarises the ways in which data from these 'Hertzian' tests may be used to determine the ext...
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| Format: | Conference item |
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Inst of Materials
2000
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| Summary: | The present paper reviews recent work on the fracture mechanics of ring crack formation from pre-existing small surface cracks when a hard sphere is pressed elastically against a hard surface. It summarises the ways in which data from these 'Hertzian' tests may be used to determine the extent of surface cracking damage, material fracture toughness, and strength of any residual stress in the surface. Examples are given of experiments applying these test methods. |
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