| Study on fracture behavior of nickel-based single crystal superalloy subjected to high temperature fatigue using digital image correlation | |
| Duan, Q. Y.1; Xue, H. W.1; Yang, Y. H.3; Zhou, Y. Z.3; Xie, H. M.1; He, W.2 | |
| Corresponding Author | Xie, H. M.(xiehm@mail.tsinghua.edu.cn) ; He, W.(hewei2008@hnu.edu.cn) |
| 2022-02-01 | |
| Source Publication | INTERNATIONAL JOURNAL OF FATIGUE
 |
| ISSN | 0142-1123 |
| Volume | 155Pages:16 |
| Abstract | Anisotropic mechanical behavior of nickel-based single crystal superalloy (NBSCS) is studied based on the displacement field near the crack tip during the fatigue crack growth at 980C. A new distortion calibration technique for bi-prism-based single-lens 3D digital image correlation (BSL3DDIC) is proposed to in-situ and online characterize 3D full-field deformation with high precision. Virtual displacement extensometers (VDEs) are arranged from the displacement field for the crack opening displacement (COD) determination. To the best of our knowledge, the effect of VDEs locations on the precision of COD measurement is first theoretically analyzed, and the arrangement of VDEs has been optimized. Noticeably, similar quantitative analyses are conducted to determine crack opening ratio (COR) for crack closure evaluation. Moreover, via fitting full-field displacement data to a theoretical model for anisotropic material, not only mode-I effective stress intensity factor (SIF) expressed as KIeff and mode-II effective SIF (K pi eff), but also theoretical SIF (KItheo), crack opening SIF (KIopen) and crack opening load ratio (COLR) are obtained. Based on these important fatigue parameters, modified Paris' law is used to describe the high-temperature anisotropic crack growth behavior. |
| Keyword | High-temperature Anisotropy Fatigue crack closure Crack opening ratio |
| Funding Organization | National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Science and Technology Major Project of China |
| DOI | 10.1016/j.ijfatigue.2021.106598 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[12032013] ; National Natural Science Foundation of China[11972209] ; National Natural Science Foundation of China[11802156] ; National Key Research and Development Program of China[2017YFB1103900] ; National Science and Technology Major Project of China[2017-VI-0003-0073] |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000789619000001 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172696 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xie, H. M.; He, W. |
| Affiliation | 1.Tsinghua Univ, Sch Aerosp Engn, AML, Beijing, Peoples R China 2.Hunan Univ, Coll Mech & Vehicle Engn, Changsha, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China |
| Recommended Citation GB/T 7714 | Duan, Q. Y.,Xue, H. W.,Yang, Y. H.,et al. Study on fracture behavior of nickel-based single crystal superalloy subjected to high temperature fatigue using digital image correlation[J]. INTERNATIONAL JOURNAL OF FATIGUE,2022,155:16. |
| APA | Duan, Q. Y.,Xue, H. W.,Yang, Y. H.,Zhou, Y. Z.,Xie, H. M.,&He, W..(2022).Study on fracture behavior of nickel-based single crystal superalloy subjected to high temperature fatigue using digital image correlation.INTERNATIONAL JOURNAL OF FATIGUE,155,16. |
| MLA | Duan, Q. Y.,et al."Study on fracture behavior of nickel-based single crystal superalloy subjected to high temperature fatigue using digital image correlation".INTERNATIONAL JOURNAL OF FATIGUE 155(2022):16. |
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