{"title":"纤维增强复合材料弹性常数:一种新的测量方法","authors":"H. Ledbetter, M. Lei","doi":"10.1109/ULTSYM.1990.171565","DOIUrl":null,"url":null,"abstract":"Composites reinforced with uniaxial fibers possess five independent elastic constants: C/sub 11/, C/sub 33/, C/sub 44/, C/sub 66/, and C/sub 13/. Measurements on a single specimen along principal axes give all the C/sub ij/ except C/sub 13/. To get C/sub 13/, a new approach is proposed that requires measurements only along principal directions: <100>. The approach also avoids the thin-plate problem, where measuring C/sub 22/ and C/sub 33/ may be difficult. A pulse-echo method is used to measure C/sub 11/, C/sub 44/, and C/sub 66/, and a resonance (kilohertz-frequency) method is used to measure two elastic compliances: S/sub 11/ and S/sub 33/. S/sub 44/ and S/sub 12/ come from simple formulas containing C/sub 44/ and C/sub 66/. S/sub 13/ comes from a relatively simple formula containing S/sub 11/, S/sub 12/, S/sub 33/, and C/sub 11/. The approach is applied to a graphite-magnesium composite.<<ETX>>","PeriodicalId":412254,"journal":{"name":"IEEE Symposium on Ultrasonics","volume":"17 3 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1990-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Elastic constants of fiber-reinforced composites: a fresh measurement approach\",\"authors\":\"H. Ledbetter, M. Lei\",\"doi\":\"10.1109/ULTSYM.1990.171565\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Composites reinforced with uniaxial fibers possess five independent elastic constants: C/sub 11/, C/sub 33/, C/sub 44/, C/sub 66/, and C/sub 13/. Measurements on a single specimen along principal axes give all the C/sub ij/ except C/sub 13/. To get C/sub 13/, a new approach is proposed that requires measurements only along principal directions: <100>. The approach also avoids the thin-plate problem, where measuring C/sub 22/ and C/sub 33/ may be difficult. A pulse-echo method is used to measure C/sub 11/, C/sub 44/, and C/sub 66/, and a resonance (kilohertz-frequency) method is used to measure two elastic compliances: S/sub 11/ and S/sub 33/. S/sub 44/ and S/sub 12/ come from simple formulas containing C/sub 44/ and C/sub 66/. S/sub 13/ comes from a relatively simple formula containing S/sub 11/, S/sub 12/, S/sub 33/, and C/sub 11/. The approach is applied to a graphite-magnesium composite.<<ETX>>\",\"PeriodicalId\":412254,\"journal\":{\"name\":\"IEEE Symposium on Ultrasonics\",\"volume\":\"17 3 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1990-12-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Symposium on Ultrasonics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ULTSYM.1990.171565\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Symposium on Ultrasonics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ULTSYM.1990.171565","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Elastic constants of fiber-reinforced composites: a fresh measurement approach
Composites reinforced with uniaxial fibers possess five independent elastic constants: C/sub 11/, C/sub 33/, C/sub 44/, C/sub 66/, and C/sub 13/. Measurements on a single specimen along principal axes give all the C/sub ij/ except C/sub 13/. To get C/sub 13/, a new approach is proposed that requires measurements only along principal directions: <100>. The approach also avoids the thin-plate problem, where measuring C/sub 22/ and C/sub 33/ may be difficult. A pulse-echo method is used to measure C/sub 11/, C/sub 44/, and C/sub 66/, and a resonance (kilohertz-frequency) method is used to measure two elastic compliances: S/sub 11/ and S/sub 33/. S/sub 44/ and S/sub 12/ come from simple formulas containing C/sub 44/ and C/sub 66/. S/sub 13/ comes from a relatively simple formula containing S/sub 11/, S/sub 12/, S/sub 33/, and C/sub 11/. The approach is applied to a graphite-magnesium composite.<>
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