Sharp probes of varying acuity: Instrumented indentation and fracture behavior
| Autor: | Sasha B. Myers, Robert F. Cook, Dylan J. Morris |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Instrumented indentation
Materials science genetic structures Mechanical Engineering Stiffness Nanoindentation Condensed Matter Physics body regions Fracture toughness Mechanics of Materials Indentation Fracture (geology) medicine General Materials Science Displacement (orthopedic surgery) medicine.symptom Composite material |
| Zdroj: | Journal of Materials Research. 19:165-175 |
| ISSN: | 2044-5326 0884-2914 |
| Popis: | The fracture and instrumented indentation behavior of a range of materials subjected to indentation by four sharp probes varying in acuity from the Berkovich to the cube-corner was studied. Quantities derived from load, displacement, and continuous stiffness measurements were evaluated for their ability to detect “pop-in”—sudden displacement excursions associated with fracture. It was found that gross unloading character was sensitive to the presence of fracture, even when no pop-in was detected. This may be useful in the development of fracture toughness estimation models that do not rely on the imaging of cracks. |
| Databáze: | OpenAIRE |
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