Fatigue fracture behavior of cured epoxy adhesive containing a surface crack

被引：4
作者：
Houjou, K. [1 ]
Akiyama, H. [1 ]
Sato, C. [2 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Nanomat Res Inst, 1-2-1 Namiki, Tsukuba, Ibaraki 3058561, Japan
[2] Tokyo Inst Technol, Precis & Intelligence Lab, 4259 Nagatsuta, Yokohama, Kanagawa 2268503, Japan
来源：
POLYMER TESTING | 2023年 / 117卷
关键词：
Fatigue; Creep; Epoxy adhesive; Dumbbell-shaped bulk; Micro crack; Stress intensity factor; TENSILE STRENGTH STEEL; LIMIT; IMPROVEMENT; GROWTH; JOINTS; CREEP;
D O I：
10.1016/j.polymertesting.2022.107821
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Adhesive joining technology is important for reducing the weight of an automobile body. As joints can be defective, it is necessary to accurately assess the risk of defects. Dumbbell-shaped bulk specimens were prepared using an epoxy adhesive. A semi-circular artificial crack was introduced in the center of the specimen to conduct the fatigue tests. As a result, it was found that defects smaller than a certain size did not reduce the strength. Using the defect inspection and fatigue test results, a method was proposed to guarantee the strength of the adhesive joints. The test material was extremely sensitive to a crack; however, the linear cumulative damage rule did not hold. Furthermore, the creep life was considerably longer than the fatigue life due to the relaxation effect.
引用
收藏
页数：7
相关论文
共 23 条
  • [1] CRAZE SHAPE AND FRACTURE IN POLY(METHYL METHACRYLATE)
    BROWN, HR
    WARD, IM
    [J]. POLYMER, 1973, 14 (10) : 469 - 475
  • [2] Single-Lap Joints Bonded with Epoxy Nanocomposite Adhesives: Effect of Organoclay Reinforcement on Adhesion and Fatigue Behaviors
    Chu, Chien-Wei
    Zhang, Yucheng
    Obayashi, Kakeru
    Kojio, Ken
    Takahara, Atsushi
    [J]. ACS APPLIED POLYMER MATERIALS, 2021, 3 (07) : 3428 - 3437
  • [3] Creep and fatigue lifetime prediction of polymer matrix composites based on simple cumulative damage laws
    Guedes, R. M.
    [J]. COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2008, 39 (11) : 1716 - 1725
  • [4] Experimental investigation of the effects of adhesive defects on the single lap joint strength
    Heidarpour, F.
    Farahani, M.
    Ghabezi, P.
    [J]. INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES, 2018, 80 : 128 - 132
  • [5] Herzberg R.W., 1979, FATIGUE FRACTURE MIC, P479
  • [6] Effect of test temperature on the shear and fatigue strengths of epoxy adhesive joints
    Houjou, K.
    Shimamoto, K.
    Akiyama, H.
    Sato, C.
    [J]. JOURNAL OF ADHESION, 2022, 98 (16) : 2599 - 2617
  • [7] Effect of cyclic moisture absorption/desorption on the strength of epoxy adhesive joints and moisture diffusion coefficient
    Houjou, K.
    Shimamoto, K.
    Akiyama, H.
    Sato, C.
    [J]. JOURNAL OF ADHESION, 2022, 98 (11) : 1535 - 1551
  • [8] Experimental investigations on the effect of a wide range of strain rates on mechanical properties of epoxy adhesives, and prediction of creep and impact strengths
    Houjou, K.
    Shimamoto, K.
    Akiyama, H.
    Sato, C.
    [J]. JOURNAL OF ADHESION, 2022, 98 (05) : 449 - 463
  • [9] Dependence of fatigue limit on stress ratio and influence of cyclic stress on shear strength for an adhesive lap joint
    Houjou, K.
    Shimamoto, K.
    Akiyama, H.
    Sato, C.
    [J]. JOURNAL OF ADHESION, 2021, 97 (12) : 1153 - 1165
  • [10] Effect of peening on the fatigue limit of welded structural steel with surface crack, and rendering the crack harmless
    Houjou, Keiji
    Takahashi, Koji
    Ando, Kotoji
    Abe, Hisanori
    [J]. INTERNATIONAL JOURNAL OF STRUCTURAL INTEGRITY, 2014, 5 (04) : 279 - 289
123