DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Do Kyung | ko |
dc.contributor.author | Jung, YG | ko |
dc.contributor.author | Peterson, IM | ko |
dc.contributor.author | Lawn, BR | ko |
dc.date.accessioned | 2010-11-19T05:29:55Z | - |
dc.date.available | 2010-11-19T05:29:55Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1999-12 | - |
dc.identifier.citation | ACTA MATERIALIA, v.47, no.18, pp.4711 - 4725 | - |
dc.identifier.issn | 1359-6454 | - |
dc.identifier.uri | http://hdl.handle.net/10203/20144 | - |
dc.description.abstract | Contact damage modes in cyclic loading with spheres are investigated in three nominally brittle ceramics, soda-lime glass, porcelain and fine-grain silicon nitride, in moist environments. Initial damage at small numbers of cycles and low loads consists of tensile-driven macroscopic cone cracks ("brittle" mode). Secondary damage at large numbers of cycles and high loads consists of shear-driven distributed microdamage ("quasi-plastic" mode), with attendant radial cracks and a new form of deeply penetrating subsidiary cone cracks. Strength tests on indented specimens are used to quantify the degree of damage. Both damage modes degrade the strength: the first, immediately after cone crack initiation, relatively slowly; the second, after development of radial cracks, much more rapidly. A fracture mechanics model describing the first mode, based on time-integration of slow growth of cone cracks, is presented. This model provides simple power-law relations for the remaining strength in terms of number of cycles and contact load for materials design. Extrapolations of these relations into the quasi-plastic region are shown to be non-conservative, highlighting the need for further understanding of the deleterious quasi-plastic mode in tougher ceramics. Comparison with static contact data indicates a strong mechanical (as opposed to chemical) component in the cyclic fatigue in the quasi-plastic region. Published by Elsevier Science Ltd on behalf of Acta Metallurgica Inc. | - |
dc.description.sponsorship | The authors acknowledge valuable contributions from Seung-Kun Lee, Kee Sung Lee and Jeong Gu Yeo, for assistance in collecting some of the data. This work was funded in part by the National Institute for Standards and Technology (NIST internal funds) and in part by grants from the National Institutes for Dental Research (NIDR PO1 DE10976) and the Korea Science and Engineering Foundation (KOSEF). | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | HETEROGENEOUS GRAIN-STRUCTURE | - |
dc.subject | STRENGTH DEGRADATION | - |
dc.subject | HERTZIAN CONTACTS | - |
dc.subject | CRACK-PROPAGATION | - |
dc.subject | SILICON-NITRIDE | - |
dc.subject | MECHANICAL CHARACTERIZATION | - |
dc.subject | POLYCRYSTALLINE CERAMICS | - |
dc.subject | INDENTATION FRACTURE | - |
dc.subject | DAMAGE ACCUMULATION | - |
dc.subject | DYNAMIC FATIGUE | - |
dc.title | Cyclic fatigue of intrinsically brittle ceramics in contact with spheres | - |
dc.type | Article | - |
dc.identifier.wosid | 000084492200020 | - |
dc.identifier.scopusid | 2-s2.0-0343081542 | - |
dc.type.rims | ART | - |
dc.citation.volume | 47 | - |
dc.citation.issue | 18 | - |
dc.citation.beginningpage | 4711 | - |
dc.citation.endingpage | 4725 | - |
dc.citation.publicationname | ACTA MATERIALIA | - |
dc.identifier.doi | 10.1016/S1359-6454(99)00246-3 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Kim, Do Kyung | - |
dc.contributor.nonIdAuthor | Jung, YG | - |
dc.contributor.nonIdAuthor | Peterson, IM | - |
dc.contributor.nonIdAuthor | Lawn, BR | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | structural ceramics | - |
dc.subject.keywordAuthor | fracture | - |
dc.subject.keywordAuthor | fatigue | - |
dc.subject.keywordAuthor | yeild phenomena | - |
dc.subject.keywordAuthor | microstructure | - |
dc.subject.keywordPlus | HETEROGENEOUS GRAIN-STRUCTURE | - |
dc.subject.keywordPlus | STRENGTH DEGRADATION | - |
dc.subject.keywordPlus | HERTZIAN CONTACTS | - |
dc.subject.keywordPlus | CRACK-PROPAGATION | - |
dc.subject.keywordPlus | SILICON-NITRIDE | - |
dc.subject.keywordPlus | MECHANICAL CHARACTERIZATION | - |
dc.subject.keywordPlus | POLYCRYSTALLINE CERAMICS | - |
dc.subject.keywordPlus | INDENTATION FRACTURE | - |
dc.subject.keywordPlus | DAMAGE ACCUMULATION | - |
dc.subject.keywordPlus | DYNAMIC FATIGUE | - |
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