Effect of Cumulative Damage on Fatigue Strength of VHTR's Graphite
Cumulative fatigue tests of fine-grained isotropic graphite IG-110 were performed on the conditions of high-low stress and low-high stress and the cumulative fatigue damage were evaluated. The following conclusions were derived: (1) Fatigue damage tested on the conditions of high-low stress was larg...
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| Veröffentlicht in: | Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan 1987/12/30, Vol.29(12), pp.1127-1133 |
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| container_end_page | 1133 |
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| container_issue | 12 |
| container_start_page | 1127 |
| container_title | Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan |
| container_volume | 29 |
| creator | ISHIYAMA, Shintarou OKU, Tatsuo ETO, Motokuni |
| description | Cumulative fatigue tests of fine-grained isotropic graphite IG-110 were performed on the conditions of high-low stress and low-high stress and the cumulative fatigue damage were evaluated. The following conclusions were derived: (1) Fatigue damage tested on the conditions of high-low stress was larger than that of lowhigh stress. (2) The evaluations of fatigue damage according to Miner's and Hashin's laws overestimated the real fatigue damage. On the other hand, the evaluations according to following equations were excellent to the real damage: (n1/N1)(lnS1/lnS3)3+n2/N2=1 (2 step test) (n1/N1)(lnS1/lnS3)3+(n2/N2)(lnS2/lnS3)(n2/N2)(lnS2/lnS3)2+n3/N3=1 (3 step test) where Si was applied stress in each step i (i=1, 2, 3), ni and Ni were applied cycle and fatigue life in each step i. |
| doi_str_mv | 10.3327/jaesj.29.1127 |
| format | Article |
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The following conclusions were derived: (1) Fatigue damage tested on the conditions of high-low stress was larger than that of lowhigh stress. (2) The evaluations of fatigue damage according to Miner's and Hashin's laws overestimated the real fatigue damage. On the other hand, the evaluations according to following equations were excellent to the real damage: (n1/N1)(lnS1/lnS3)3+n2/N2=1 (2 step test) (n1/N1)(lnS1/lnS3)3+(n2/N2)(lnS2/lnS3)(n2/N2)(lnS2/lnS3)2+n3/N3=1 (3 step test) where Si was applied stress in each step i (i=1, 2, 3), ni and Ni were applied cycle and fatigue life in each step i.</description><identifier>ISSN: 0004-7120</identifier><identifier>EISSN: 2186-5256</identifier><identifier>DOI: 10.3327/jaesj.29.1127</identifier><language>jpn</language><publisher>Atomic Energy Society of Japan</publisher><subject>cumulative fatigue damage ; damage factor ; fatigue ; isotropic finegrained graphite ; material testing ; Miner's low ; stress dependence ; stresses</subject><ispartof>Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, 1987/12/30, Vol.29(12), pp.1127-1133</ispartof><rights>by the Atomic Energy Society of Japan</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c427t-fadfddc99dbe95d0d9ccdda230b156bab430708022970ae4569206758a29ddcb3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,1884,27929,27930</link.rule.ids></links><search><creatorcontrib>ISHIYAMA, Shintarou</creatorcontrib><creatorcontrib>OKU, Tatsuo</creatorcontrib><creatorcontrib>ETO, Motokuni</creatorcontrib><title>Effect of Cumulative Damage on Fatigue Strength of VHTR's Graphite</title><title>Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan</title><addtitle>Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan</addtitle><description>Cumulative fatigue tests of fine-grained isotropic graphite IG-110 were performed on the conditions of high-low stress and low-high stress and the cumulative fatigue damage were evaluated. The following conclusions were derived: (1) Fatigue damage tested on the conditions of high-low stress was larger than that of lowhigh stress. (2) The evaluations of fatigue damage according to Miner's and Hashin's laws overestimated the real fatigue damage. On the other hand, the evaluations according to following equations were excellent to the real damage: (n1/N1)(lnS1/lnS3)3+n2/N2=1 (2 step test) (n1/N1)(lnS1/lnS3)3+(n2/N2)(lnS2/lnS3)(n2/N2)(lnS2/lnS3)2+n3/N3=1 (3 step test) where Si was applied stress in each step i (i=1, 2, 3), ni and Ni were applied cycle and fatigue life in each step i.</description><subject>cumulative fatigue damage</subject><subject>damage factor</subject><subject>fatigue</subject><subject>isotropic finegrained graphite</subject><subject>material testing</subject><subject>Miner's low</subject><subject>stress dependence</subject><subject>stresses</subject><issn>0004-7120</issn><issn>2186-5256</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><recordid>eNo90M9LwzAUB_AgCo65o_ee9NSZvDbNctS5H8JA0Ok1pOnr1tEfM0kF_3vbdeySB-HzffC-hNwzOo0iEE8Hje4wBTllDMQVGQGbJSEHnlyTEaU0DgUDeksmzhUppcAFY3Q2Ii-LPEfjgyYP5m3VltoXvxi86krvMGjqYNl97FoMPr3Feuf3Pfxebz8eXbCy-rgvPN6Rm1yXDifnOSZfy8V2vg4376u3-fMmNDEIH-Y6y7PMSJmlKHlGM2lMlmmIaMp4kuo0jqigMwogBdUY80QCTQSfaZBdLo3G5GHYe7TNT4vOq6pwBstS19i0TkEcdyti2cFwgMY2zlnM1dEWlbZ_ilHVl6VOZSmQqi-r8-vBH5zvzr5obX1hShw0k1yeEnB---iFmL22CuvoHw9idj8</recordid><startdate>19870101</startdate><enddate>19870101</enddate><creator>ISHIYAMA, Shintarou</creator><creator>OKU, Tatsuo</creator><creator>ETO, Motokuni</creator><general>Atomic Energy Society of Japan</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>19870101</creationdate><title>Effect of Cumulative Damage on Fatigue Strength of VHTR's Graphite</title><author>ISHIYAMA, Shintarou ; OKU, Tatsuo ; ETO, Motokuni</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c427t-fadfddc99dbe95d0d9ccdda230b156bab430708022970ae4569206758a29ddcb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>jpn</language><creationdate>1987</creationdate><topic>cumulative fatigue damage</topic><topic>damage factor</topic><topic>fatigue</topic><topic>isotropic finegrained graphite</topic><topic>material testing</topic><topic>Miner's low</topic><topic>stress dependence</topic><topic>stresses</topic><toplevel>online_resources</toplevel><creatorcontrib>ISHIYAMA, Shintarou</creatorcontrib><creatorcontrib>OKU, Tatsuo</creatorcontrib><creatorcontrib>ETO, Motokuni</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>ISHIYAMA, Shintarou</au><au>OKU, Tatsuo</au><au>ETO, Motokuni</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Cumulative Damage on Fatigue Strength of VHTR's Graphite</atitle><jtitle>Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan</jtitle><addtitle>Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan</addtitle><date>1987-01-01</date><risdate>1987</risdate><volume>29</volume><issue>12</issue><spage>1127</spage><epage>1133</epage><pages>1127-1133</pages><issn>0004-7120</issn><eissn>2186-5256</eissn><abstract>Cumulative fatigue tests of fine-grained isotropic graphite IG-110 were performed on the conditions of high-low stress and low-high stress and the cumulative fatigue damage were evaluated. The following conclusions were derived: (1) Fatigue damage tested on the conditions of high-low stress was larger than that of lowhigh stress. (2) The evaluations of fatigue damage according to Miner's and Hashin's laws overestimated the real fatigue damage. On the other hand, the evaluations according to following equations were excellent to the real damage: (n1/N1)(lnS1/lnS3)3+n2/N2=1 (2 step test) (n1/N1)(lnS1/lnS3)3+(n2/N2)(lnS2/lnS3)(n2/N2)(lnS2/lnS3)2+n3/N3=1 (3 step test) where Si was applied stress in each step i (i=1, 2, 3), ni and Ni were applied cycle and fatigue life in each step i.</abstract><pub>Atomic Energy Society of Japan</pub><doi>10.3327/jaesj.29.1127</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0004-7120 |
| ispartof | Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, 1987/12/30, Vol.29(12), pp.1127-1133 |
| issn | 0004-7120 2186-5256 |
| language | jpn |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese |
| subjects | cumulative fatigue damage damage factor fatigue isotropic finegrained graphite material testing Miner's low stress dependence stresses |
| title | Effect of Cumulative Damage on Fatigue Strength of VHTR's Graphite |
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