Closed-cell polyurethane in-situ foaming honeycomb for enhanced energy absorption and water intrusion resistance

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成果类型：

期刊论文

作者：

Wang, Hao;Xie, Suchao;Jing, Kunkun;Zheng, Shiwei;Liu, Zinan;...

通讯作者：

Xie, SC

作者机构：

[Xie, SC; Xie, Suchao; Jing, Kunkun; Liu, Zinan; Zheng, Shiwei; Wang, Hao] Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Peoples R China.

[Xie, Suchao; Jing, Kunkun; Liu, Zinan; Zheng, Shiwei; Wang, Hao] Joint Int Res Lab Key Technol Rail Traff Safety, Changsha 410075, Peoples R China.

[Xie, Suchao; Jing, Kunkun; Liu, Zinan; Zheng, Shiwei; Wang, Hao] Natl & Local Joint Engn Res Ctr Safety Technol Rai, Changsha 410075, Peoples R China.

[Zhou, Hui] Cent South Univ Forestry & Technol, Sch Logist & Transportat, Changsha 410075, Peoples R China.

通讯机构：

[Xie, SC ] C

Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Peoples R China.

语种：

英文

关键词：

Honeycomb structure;Closed-cell polyurethane foam;Mechanical properties;Energy absorption;Water intrusion resistance

期刊：

Alexandria Engineering Journal

ISSN：

1110-0168

年：

2025

卷：

114

页码：

572-587

DOI：

10.1016/j.aej.2024.12.011

基金类别：

Central South University, CSU University of Tokyo National Natural Science Foundation of China, NSFC, (52202455) National Natural Science Foundation of China, NSFC China Scholarship Council, CSC, (202406370213) China Scholarship Council, CSC Natural Science Foundation of Hunan Province, (2023JJ31015) Natural Science Foundation of Hunan Province Science and Technology Program of Hunan Province, (2024RC1019) Science and Technology Program of Hunan Province

机构署名：

本校为其他机构

院系归属：

交通运输与物流学院

摘要：

To achieve novel core with high energy absorption and strong water intrusion resistance, a composite structure was created by employing in-situ foaming of closed-cell polyurethane (PU) in a honeycomb structure. Experimental, theoretical, and finite element analyses revealed that the in-situ foaming technique increased the honeycomb's energy absorption by 312.84 % and improved impact efficiency by 61.45 % while maintaining specific energy absorption (SEA). Remarkably, this composite structure surpassed the energy absorption capacity of individ...

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Closed-cell polyurethane in-situ foaming honeycomb for enhanced energy absorption and water intrusion resistance

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