Yan Gao, Yanquan Zhou, Zequn Lin, Chenxing Gong, Zihan Ling
{"title":"尺寸效应和湿热老化对厚CFRP复合材料II型层间断裂韧性的影响","authors":"Yan Gao, Yanquan Zhou, Zequn Lin, Chenxing Gong, Zihan Ling","doi":"10.1111/ffe.14690","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>The size effects and hygrothermal aging behavior of Mode II interlaminar fracture toughness (<i>G</i><sub>II<i>c</i></sub>) for thick composites are investigated. Experimental results demonstrate that increasing specimen thickness leads to a rise in <i>G</i><sub>II<i>c</i></sub> for NPC and PC tests from 0.99 and 0.64 kJ/m<sup>2</sup> to 1.41 and 0.97 kJ/m<sup>2</sup>, respectively. FE simulation results indicate that the increase in the fracture process zone (FPZ) area plays a crucial role in contributing to the size effects observed in <i>G</i><sub>II<i>c</i></sub>. The ENF specimens exhibit a significant decrease in glass transition temperature (<i>T</i><sub><i>g</i></sub>) along with noticeable changes in fracture morphology. The <i>G</i><sub>II<i>c</i></sub> values obtained from NPC tests are significantly lower than those of unaged specimens. However, hygrothermal aging has no effect on the crack propagation behavior and <i>G</i><sub>II<i>c</i></sub> values in PC tests. These findings provide practical insights for designing and predicting the service life of composite components exposed to humid and high-temperature environments.</p>\n </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 8","pages":"3517-3527"},"PeriodicalIF":3.1000,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Size Effects and Hygrothermal Aging on Mode II Interlaminar Fracture Toughness of Thick CFRP Composites\",\"authors\":\"Yan Gao, Yanquan Zhou, Zequn Lin, Chenxing Gong, Zihan Ling\",\"doi\":\"10.1111/ffe.14690\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>The size effects and hygrothermal aging behavior of Mode II interlaminar fracture toughness (<i>G</i><sub>II<i>c</i></sub>) for thick composites are investigated. Experimental results demonstrate that increasing specimen thickness leads to a rise in <i>G</i><sub>II<i>c</i></sub> for NPC and PC tests from 0.99 and 0.64 kJ/m<sup>2</sup> to 1.41 and 0.97 kJ/m<sup>2</sup>, respectively. FE simulation results indicate that the increase in the fracture process zone (FPZ) area plays a crucial role in contributing to the size effects observed in <i>G</i><sub>II<i>c</i></sub>. The ENF specimens exhibit a significant decrease in glass transition temperature (<i>T</i><sub><i>g</i></sub>) along with noticeable changes in fracture morphology. The <i>G</i><sub>II<i>c</i></sub> values obtained from NPC tests are significantly lower than those of unaged specimens. However, hygrothermal aging has no effect on the crack propagation behavior and <i>G</i><sub>II<i>c</i></sub> values in PC tests. These findings provide practical insights for designing and predicting the service life of composite components exposed to humid and high-temperature environments.</p>\\n </div>\",\"PeriodicalId\":12298,\"journal\":{\"name\":\"Fatigue & Fracture of Engineering Materials & Structures\",\"volume\":\"48 8\",\"pages\":\"3517-3527\"},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2025-05-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Fatigue & Fracture of Engineering Materials & Structures\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/ffe.14690\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fatigue & Fracture of Engineering Materials & Structures","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ffe.14690","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Size Effects and Hygrothermal Aging on Mode II Interlaminar Fracture Toughness of Thick CFRP Composites
The size effects and hygrothermal aging behavior of Mode II interlaminar fracture toughness (GIIc) for thick composites are investigated. Experimental results demonstrate that increasing specimen thickness leads to a rise in GIIc for NPC and PC tests from 0.99 and 0.64 kJ/m2 to 1.41 and 0.97 kJ/m2, respectively. FE simulation results indicate that the increase in the fracture process zone (FPZ) area plays a crucial role in contributing to the size effects observed in GIIc. The ENF specimens exhibit a significant decrease in glass transition temperature (Tg) along with noticeable changes in fracture morphology. The GIIc values obtained from NPC tests are significantly lower than those of unaged specimens. However, hygrothermal aging has no effect on the crack propagation behavior and GIIc values in PC tests. These findings provide practical insights for designing and predicting the service life of composite components exposed to humid and high-temperature environments.
期刊介绍：
Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.
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