Journal of Reinforced Plastics & Composites最新文献

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Tensile Properties of Unsaturated Polyester-Based Sisal Fiber–Glass Fiber Hybrid Composites 不饱和聚酯基剑麻纤维-玻璃纤维杂化复合材料的拉伸性能

Journal of Reinforced Plastics & Composites Pub Date : 2004-11-01 DOI: 10.1177/0731684404041147

K. John, S. Naidu

引用次数: 90

Hot-Wet Property Characterisation of a High-Temperature Cured Glass–Epoxy Composite in Immersion Environment 高温固化玻璃-环氧复合材料在浸没环境下的热湿性能表征

Journal of Reinforced Plastics & Composites Pub Date : 2004-11-01 DOI: 10.1177/0731684404041709

S. Mahale, D. Rajamani, A. Revathi, M. Prakash, S. Srihari, R. Rao

{"title":"Hot-Wet Property Characterisation of a High-Temperature Cured Glass–Epoxy Composite in Immersion Environment","authors":"S. Mahale, D. Rajamani, A. Revathi, M. Prakash, S. Srihari, R. Rao","doi":"10.1177/0731684404041709","DOIUrl":"https://doi.org/10.1177/0731684404041709","url":null,"abstract":"The hygrothermal diffusion and degradation behavior of a high-temperature cured glass–epoxy (Epoxy Novolac – EPN) composite system was studied under two environmental conditions (i.e. 323 K and 343 K immersion in distilled water). Samples immersed at 343 K showed higher diffusivity (Dc) value and lower saturation time (tm) than those of 323 K immersion while the maximum moisture content (Mm) remained the same, good Fickian correlation were observed for the composite system. As regards the degradative effects, the glass transition temperature (Tg) of the composite decreased with increased moisture content showing a maximum drop of 30 C at full saturation, while the mechanical properties (ILSS and IPS) of saturated specimens degraded upto 26 and 33% respectively. Further these mechanical properties obtained at 70 C/85%RH test condition showed good correlations with those predicted by a theoretical equation (Chamis et al. An Intergrated Theory for Predicting the Hydrothermo Mechanical Response of Advanced Composite Structural Components, Lewis Research Center, Cleveland, Ohio, NASA Technical Memorandum 73812).","PeriodicalId":16971,"journal":{"name":"Journal of Reinforced Plastics & Composites","volume":"11 1","pages":"1883 - 1892"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72736263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Low-Velocity Impact Response of Polyurethane Foam Composite Sandwich Structures 聚氨酯泡沫复合材料夹层结构的低速冲击响应

Journal of Reinforced Plastics & Composites Pub Date : 2004-11-01 DOI: 10.1177/0731684404041141

S. C. Sharma, H. N. Narasimha Murthy, M. Krishna

{"title":"Low-Velocity Impact Response of Polyurethane Foam Composite Sandwich Structures","authors":"S. C. Sharma, H. N. Narasimha Murthy, M. Krishna","doi":"10.1177/0731684404041141","DOIUrl":"https://doi.org/10.1177/0731684404041141","url":null,"abstract":"Low-velocity instrumented impact tests were carried out on sandwich panels made of glass fiber-reinforced plastic facesheets and polyurethane foam core. The tests were carried out using a drop weight instrumented impact tester, connected to a data acquisition system. Four different types of sandwich samples using polyester/e-glass and epoxy/e-glass facesheet materials and polyurethane foam were considered for investigation. Two different face sheet materials were chosen to experimentally examine the effect of their elastic modulus on the impact response of the sandwich structures. The data acquisition system records the impact data such as impact force, penetration time and depth of penetration, and plots impact force versus depth of penetration and penetration time versus depth of penetration curves. From the recorded data the impact parameters such as maximum impact force, penetration time and depth of penetration versus impact energy were plotted to study the impact behavior. The results show that higher impact energy is required to break the epoxy/e-glass facesheet and backsheet sandwich specimens than other types of specimens examined. The impact damage caused to the facesheet, the core and the backsheet were thoroughly studied experimentally and the extent of damage caused to the facesheets and the core were also compared by finite element analyses.","PeriodicalId":16971,"journal":{"name":"Journal of Reinforced Plastics & Composites","volume":"7 1","pages":"1869 - 1882"},"PeriodicalIF":0.0,"publicationDate":"2004-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89764475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 32

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