@article{86817bae8ae34e42b540212fdce9807f,
title = "Quantitative estimation of contribution of pore size and the distance between nearest neighbour pores on high cycle fatigue (HCF) crack initiation in Ti-6Al-4V MIM-sintered materials",
abstract = "The fatigue damages due to pores of MIM-sintered Ti64 were investigated using the synchrotron X-ray CT imaging. The effect of pores on the fatigue strength limits was analysed independently from that of grain size by introducing the fatigue limit ratio RF. The pores near to the maximum-stress area were identified by elastic FEM. The maximum stress intensity factor KI-max at the edge of the identified pores showed a negative correlation with RF. Moreover, the initial cleavage in the crack was influenced by the mutual interference of both stress fields by the proximity of the identified pore and its adjacent pores.",
author = "Isshin Ando and Kentaro Kudo and Kyosuke Hirayama and Yuji Shigeta and Kazunari Shinagawa and Akihisa Takeuchi and Masayuki Uesugi and Yukiko Ozaki",
note = "Funding Information: This study was supported by JSPS KAKENHI [grant number JP18K04779]. The funding agency had no role in the study design, collection, analysis, interpretation of data, writing of the report; and the decision to submit the article for publication. Funding Information: Synchrotron radiation experiments were performed at the BL20XU beamline of SPring-8, with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2019B1399). We are grateful to Professors Masato Niibe and Hiroyuki Toda for their assistance with this work at SPring-8. Moreover, we grateful to Prof. Ippei Obayashi and Prof. Yasuaki Hiraoka at the Centre for Advanced Intelligence Project (AIP) in RIKEN for providing the free software “HomCloud” and their helpful advice. We thank Prof. Takeshi Tsuji and Dr. Fei Jiang at I2CNER of Kyusyu University for their meaningful discussions on the application of persistent homology to porous materials. We thank Mr. Koji Nakamura, Mr. Tomoyasu Kamogawa, and Mr. Yusuke Shimizu for their voluntary accistance in operating the X-ray CT and Mr. Takahiro Kato at JFE SEKKEI LTD. for his strong support in the FEM analysis. We would like to thank Editage (www.editage.com) for the English language editing. Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",
year = "2023",
month = jun,
doi = "10.1016/j.ijfatigue.2023.107557",
language = "English",
volume = "171",
journal = "International Journal of Fatigue",
issn = "0142-1123",
publisher = "Elsevier Limited",
}