Effect of creep on the mode II residual fracture energy of adhesives

被引：19

作者：

Carneiro Neto, Ranulfo M. ^{[1
]}

Akhavan-Safar, Alireza ^{[2
]}

Sampaio, Eduardo M. ^{[3
]}

Assis, Joaquim T. ^{[3
]}

da Silva, Lucas F. M. ^{[4
]}

机构：

[1] Univ Fed Rio de Janeiro, Ctr Technol & Applicat Composite Mat, Macae, Brazil

[2] Inst Sci & Innovat Mech & Ind Engn INEGI, Rua Dr Roberto Frias, P-4200465 Porto, Portugal

[3] Univ Estado Rio De Janeiro, Polytech Inst, Lab Adhes & Adherence, Nova Friburgo, Brazil

[4] Univ Porto, Fac Engn, Dept Engn Mecan, Rua Dr Roberto Frias, Porto, Portugal

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2021年 / 138卷 / 47期

关键词：

adhesive; creep; ENF; fracture energy; mode II; BONDED JOINTS; TEMPERATURE; TOUGHNESS; BRITTLE;

D O I：

10.1002/app.51387

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Viscous flow that often occurs in adhesive materials leads to a permanent deformation when adhesives are subjected to creep loading. Creep loading has a significant influence on the strength of bonded structures. Due to the viscous behavior, the fracture energy also may change with time for joints that experience creep loading in service. In this work the effects of two creep parameters (creep load and time) on the residual mode II fracture energy of an adhesive was investigated using end notched flexure (ENF) specimens. To achieve this, ENF samples were subjected to different creep loading levels at different creep times followed by quasi static tests to obtain the residual shear fracture energy of the adhesive. Experimental results showed that pre-creep loading of the bonded structures can significantly improve the fracture energy and the static strength of the joints.

引用

页数：12

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