A digital twin approach toward unlocking elasto-plastic fatigue crack growth rates under negative load ratios

被引：3
作者：
Cheok, Evan Wei Wen [1 ]
Qian, Xudong [1 ]
Quek, Ser Tong [1 ]
Si, Michael Boon Ing [1 ]
机构：
[1] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117576, Singapore
来源：
ENGINEERING FRACTURE MECHANICS | 2024年 / 301卷
关键词：
Digital twin; Data -driven approach; Cracks; Elasto-plastic fatigue crack growth; Variable amplitude loading; HIGH-STRENGTH STEEL; PROPAGATION; PREDICTION;
D O I：
10.1016/j.engfracmech.2024.110034
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This paper introduces a novel digital twin solution for unlocking the elasto-plastic fatigue crack growth within an S550 steel under negative load ratios. The digital twin transforms solely strain data from a strain-interfaced welded plate joint specimen to the load-displacement curve to compute cyclic J-integral values using the eta approach, eliminating the need for load and displacement measurements. The accurate computation of the elasto-plastic Delta J effectively extends the fatigue crack growth relationship derived from standard fracture specimens. The extended fatigue crack growth relationship accurately predicts the fatigue life of specimens under separate step-up and step-down variable amplitude loading regimes.
引用
收藏
页数：17
相关论文
共 60 条
  • [1] A new nonlinear fatigue damage model based only on S-N curve parameters
    Aeran, Ashish
    Siriwardane, Sudath C.
    Mikkelsen, Ove
    Langen, Ivar
    [J]. INTERNATIONAL JOURNAL OF FATIGUE, 2017, 103 : 327 - 341
  • [2] Damage detection in jacket-type offshore platforms via generalized flexibility matrix and optimal genetic algorithm (GFM-OGA)
    Aghaeidoost, V.
    Afshar, S.
    Tajaddod, N. Ziaie
    Asgarian, B.
    Shokrgozar, H. Rahman
    [J]. OCEAN ENGINEERING, 2023, 281
  • [3] American Welding Society, 2015, AWS D1.1/1.1M: Structural welding code-steel
  • [4] Numerical simulation of plasticity induced crack closure: Identification and discussion of parameters
    Antunes, F. V.
    Rodrigues, D. M.
    [J]. ENGINEERING FRACTURE MECHANICS, 2008, 75 (10) : 3101 - 3120
  • [5] ASTM International, 2023, ASTM E647-23a
  • [6] ASTM International, 2023, ASTM E1820-23b
  • [7] Reconsiderations of fatigue crack growth at negative stress ratios: Finite element analyses
    Benz, C.
    Sander, M.
    [J]. ENGINEERING FRACTURE MECHANICS, 2015, 145 : 98 - 114
  • [8] Measuring J-R curve under dynamic loading conditions using digital image correlation
    Chen, Cheng
    Qian, Xudong
    [J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 2023, 46 (10) : 3892 - 3911
  • [9] In-situ observation of strain evolution and ratchetting of growing fatigue cracks
    Chen, Rong
    Hu, Xiao-Kai
    Zhu, Ming-Liang
    Xuan, Fu-Zhen
    [J]. ENGINEERING FRACTURE MECHANICS, 2023, 279
  • [10] A local digital twin approach for identifying, locating and sizing cracks in CHS X-joints subjected to brace axial loading
    Cheok, Evan Wei Wen
    Qian, Xudong
    Chen, Cheng
    Quek, Ser Tong
    Si, Michael Boon Ing
    [J]. ENGINEERING STRUCTURES, 2024, 299
123456