Unconventional fatigue failure of densified wood

被引：0

作者：

Chen, Bo ^{[1
]}

Chen, Qiongyu ^{[1
]}

Leiste, Ulrich H. ^{[2
]}

Liu, Yu ^{[3
]}

Meng, Taotao ^{[3
]}

Dai, Jiaqi ^{[4
]}

Gong, Amy ^{[4
]}

Hu, Liangbing ^{[3
]}

Fourney, William L. ^{[1
,2
]}

Li, Teng ^{[1
]}

机构：

[1] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA

[2] Univ Maryland, Dept Aerosp Engn, College Pk, MD 20742 USA

[3] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[4] Inventwood Inc, Frederick, MD 21703 USA

来源：

EXTREME MECHANICS LETTERS | 2024年 / 71卷

基金：

美国能源部;

关键词：

Fatigue; Fracture; Wood; Cellulose; HIGH-CYCLE FATIGUE; RESIDUAL-STRESS; SHOT; TOUGHNESS; STRENGTH; LIFE;

D O I：

10.1016/j.eml.2024.102218

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Fatigue is a critical failure mechanism in various materials, often leading to catastrophic consequences. Designing materials with non-catastrophic fatigue failure is desirable yet challenging. This work presents the remarkable fatigue behavior of densified wood, exhibiting both a higher fatigue strength and non-catastrophic failure compared to natural wood. The improved bonding between wood fibers, primarily through hydrogen bonds, enables robust structural integrity even after fatigue failure. This mechanistic understanding offers insights for achieving non-catastrophic fatigue failure in diverse materials, presenting a fundamental principle for material design with broad implications.

引用

页数：6

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