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Xiaobo Ren

Senior Research Scientist

Xiaobo Ren

Senior Research Scientist

Xiaobo Ren
Phone: 966 90 027
Department: Materials and Nanotechnology
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1727733

Residual stress in additive manufacturing (AM) is one of the key challenges in terms of structural integrity and finish quality of printed components. Estimating the residual stress distribution on additively manufactured components is complex and computationally expensive with full scale thermo-mec...

Authors Sun Li Ren Xiaobo He Jianying Olsen Jim Stian Pallaspuro Sakari Zhang Zhiliang
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1716677

In this study, the effect of Lüders plateau on the ductile crack growth resistance has been investigated with the Gurson damage model and the modified boundary layer (MBL) model, under mode I plane strain condition. The Lüders plateau is modeled as horizontal by keeping the plateau stress ...

Authors Tu Shengwen Ren Xiaobo He Jianying Zhang Zhiliang
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1690385

It is still a challenge to numerically achieve the interactive competition between ductile damage and brittle fracture in ductile-to-brittle transition (DBT) region. In addition, since two types of fracture occur at two independent material length scales, it is difficult to process them with the sam...

Authors Li Yang Shterenlikht Anton Ren Xiaobo He Jianying Zhang Zhiliang
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1681268

Recently, the authors in this paper proposed a correction function to determine material’s equivalent stress-strain curve with axisymmetric-notched tensile specimens. In this study, tensile tests were performed at room temperature, -30℃ and -60℃ with axisymmetric notched tensile specimens to verify ...

Authors Tu Shengwen Ren Xiaobo He Jianying Zhang Zhiliang
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1627860

The increasing demand of energy prompts the petroleum industry exploitation activities to the Arctic region where the low temperature is a strong challenge, both for structural design and material selection. For structural materials exhibiting the Lüders plateau, it has been reported that lower...

Authors Tu Shengwen Ren Xiaobo He Jianying Zhang Zhiliang
Year 2018
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1616302

The brittle-to-ductile transition (BDT), no matter what the dominated mechanism is, dislocation nucleation or dislocation motion, is not an intrinsic phenomenon of material, and depends not only on the strain rate but also on the constraint at crack tip. However, few work has been performed on study...

Authors Li Yang Ren Xiaobo He Jianying Zhang Zhiliang
Year 2018
Type Journal publication