Experimental determination of the notch stress intensity factor for sharp V-notched specimens by using the digital image correlation method

被引：41
作者：
Torabi, A. R. [1 ]
Bahrami, B. [2 ]
Ayatollahi, M. R. [2 ]
机构：
[1] Univ Tehran, Fac New Sci & Technol, Fracture Res Lab, Tehran, Iran
[2] Iran Univ Sci & Technol, Ctr Excellence Expt Solid Mech & Dynam, Fatigue & Fracture Res Lab, Sch Mech Engn, Tehran 16846, Iran
来源：
THEORETICAL AND APPLIED FRACTURE MECHANICS | 2019年 / 103卷
关键词：
Digital image correlation (DIC) method; Sharp V-notch; Mode I loading condition; Notch stress intensity factor; BRAZILIAN DISK SPECIMENS; MIXED-MODE I/II; FRACTURE-ANALYSIS; FATIGUE-STRENGTH; CRACK; FIELD; TIP; TENSION; PLATES; ALUMINUM;
D O I：
10.1016/j.tafmec.2019.102244
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Digital image correlation (DIC) method is used to experimentally determine the notch stress intensity factor for sharp V-notched samples under mode I loading conditions. First, two well-known test specimens, namely the single edge notch tension (SENT) and the single edge notch bending (SENB) specimens are chosen. The specimens are made of Polymethyl-methacrylate (PMMA) and for each specimen, five different notch opening angles are considered. Then, the experimental displacement fields in the specimens are derived by using DIC method. Afterward, the over-deterministic method is employed to derive the mode I notch stress intensity factors for the samples tested. According to the over-deterministic method, the analytical displacement field is fitted to a large amount of experimentally obtained local displacement values. Finally, the results obtained from DIC are compared with the results available in the literature. The good accuracy of the results obtained demonstrates the ability of DIC method in derivation of the stress field for sharp V-notched structures.
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页数：13
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Wu, D. F. ;
Shang, L. ;
Pu, Y. ;
Wang, H. T. .
EXPERIMENTAL MECHANICS, 2016, 56 (03) :463-474
[32]   Determination of higher order stress terms in cracked Brazilian disc specimen under mode I loading using digital image correlation technique [J].
Moazzami, Mostafa ;
Ayatollahi, Majid R. ;
Chamani, Hamid R. ;
Guagliano, Mario ;
Vergani, Laura .
OPTICS AND LASER TECHNOLOGY, 2018, 107 :344-352
[33]   A dual fracture mechanical approach for estimating notch stress intensity factor and T-stress using volumetric methods on API 5L pipe steel: Experimental study and numerical validation [J].
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Amara, Mouna ;
Suleiman, Rami K. ;
Kumar, Arumugam Madhan ;
Al-Badour, Fadi A. ;
Abdelmoumen, Guedri ;
Meliani, Mohammed Hadj .
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Ni, Ting ;
Zhang, Fang ;
Li, Yuanhang ;
Zuo, Jianping ;
Zhao, Shankun .
THEORETICAL AND APPLIED FRACTURE MECHANICS, 2023, 127
[35]   Experimental and numerical estimation of complex stress intensity factor for the completely debonded anti-crack embedded into a weak matrix using domain integral method [J].
Patil, Swapnil A. ;
Chinthapenta, Viswanath ;
Khaderi, S. N. ;
Ramji, M. .
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