| Autor: |
Ronald W. Armstrong, D. L Thurston, C.Cm Wu, P. J Boudreaux, K. L Jackson, J.L Fitz |
| Rok vydání: |
1999 |
| Předmět: |
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| Zdroj: |
International Journal of Refractory Metals and Hard Materials. 17:1-10 |
| ISSN: |
0263-4368 |
| DOI: |
10.1016/s0263-4368(98)00069-9 |
| Popis: |
Ring cracking measurements have been made on millimeter thick industrial diamond plates by performing a reverse type of hardness test with a conventional steel ball indenter system. Cathodoluminescence (CL) measurements at the ring crack edges provided evidence of associated deformation. Follow-on fracture strength measurements were made by three-point bend testing of beams laser-cut from two materials to probe both microstructural influences and the effect of laser-drilled “via holes” (for electrical application). Expanded autographic records of the bend tests allowed estimation of elastic modulus values. The bend tests were modeled satisfactorily with an ANSYS finite element description. Fracture surface topography measurements made on the failed bend specimens of one material also provided indication of plastic deformation being associated with the diamond material cracking behavior. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect