Xiaoxin Zhao
Xiaoxin Zhao, male, born in April, 1987, is a lecturer and master's supervisor at the School of Mechanical Engineering, Beijing Institute of Petrochemical Technology. He earned his Ph.D. in engineering from Tianjin University in 2020. His expertise lies in structural integrity and non-destructive testing, with a professional background as a Non-destructive Testing Engineer at the 725th Research Institute of CSSC (2013-2016).
The research focuses on theories and finite element simulations for the integrity evaluation of welded structures based on fracture mechanics, simulations of temperature fields and residual stress fields during welding, impact dynamics simulations, underwater welding and repair, and non-destructive testing. He has led one National Natural Science Foundation Category C project (formerly the Young Scientists Fund), one project under a State Key Laboratory, six industry-sponsored horizontal projects, and one interdisciplinary university project. Additionally, he has participated as a key member in two National Natural Science Foundation General Program projects and multiple enterprise-commissioned projects. To date, he has published over 10 SCI/EI-indexed papers, contributed to the formulation of two national standards, obtained one authorized national invention patent, and secured one software copyright.
I. Major Research Areas
1. Theory and finite element simulation for integrity assessment of welded structures based on fracture mechanics.
2. Experiment and simulation of temperature field and residual stress field during welding processes.
3. Structural integrity assessment under impact dynamics.
4. Underwater welding and repair.
II. Research Projects
1. National Natural Science Foundation-Youth Project: Experimental study and life prediction modeling of fatigue crack growth and fracture assessment of full-scale offshore girth-welded risers under multiaxial loading (Project No.: 52205331), Project Leader, 2023.1–2025.12.
2. Project of the State Key Laboratory of Intelligent Manufacturing for Special Vehicles and Transmission Systems: Fatigue life assessment of large titanium alloy structural components, Project Leader, 2022.1–2023.12.
3. Enterprise Project: Mechanical performance analysis of Type-II radioactive material transport containers, Project Leader, 2022.6–2023.6.
4. Enterprise Project: Structural integrity simulation analysis of radioactive material transport containers, Project Leader, 2023.2–2023.8.
5. Beijing Institute of Petrochemical Technology Interdisciplinary Project: Efficient prediction of crack driving force in submarine pipelines and research on leakage safety assessment strategies(Project No.: BIPTCSF-003), Project Leader, 2021.1–2022.12.
6. National Natural Science Foundation General Program: Study on the joint formation mechanism of typical titanium alloy components fabricated by TIG welding in high-pressure environments (Project No.: 52175286), Key Participant, 2022.1–2025.12.
7. National Natural Science Foundation General Program: Research on engineering critical assessment methods for girth welds of reel-laid composite pipes(Project No.: 51575382), Key Participant, 2016.1–2019.12.
8. National Marine Strategic Emerging Industry Special Project: Collaborative innovation and construction of the welding intelligent manufacturing industry chain for high-end marine equipment (Project No.: BHSF2017-22), Key Participant, 2017.1–2019.12.
9. High-Tech Ship Research Project: Standard research on "Phased array ultrasonic testing methods for welds", Key Participant, 2014.1–2016.12.
Ⅲ. Representative Publications
1. Zhao X, Xu L, Jing H, et al. A modification of reference strain approach for thin-walled submarine pipelines under large-scale plastic strain and internal pressure[J]. Thin-Walled Structures, 2019, 140:182-194.
2. Zhao X, Xu L, Jing H, et al. A strain-controlled fracture assessment for submarine thin-walled pipes with V-groove welds and circumferential embedded cracks[J]. Thin-Walled Structures, 2019, 145:106377.1-106377.15.
3. Zhao X, Xu L, Jing H, et al. A strain-based fracture assessment for offshore clad pipes with ultra undermatched V groove weld joints and circumferential surface cracks under large-scale plastic strain[J]. European Journal of Mechanics-A/Solids , 2019, 74:403-416.
4. Zhao X, Xu L, Jing H, et al. A modified strain-controlled reference stress approach for submarine pipelines under large-scale plastic strain[J]. Advances in Engineering Software, 2018, 119:12-20.
5. Zhao X, Zhang P, Li J, et al. Cover plate welding sequence and shape rationality simulation analysis on wall cracks of stainless steel spent fuel pool[J]. Progress in Nuclear Energy, 2022, 154:104481.
6. Zhao X, Xu L, Jing H, et al. Research Progress of Engineering Critical Assessment of Submarine Pipelines with Large Deformation[J]. Journal of Mechanical Engineering,2019,55(2):82-90
7. Jia P, Jiang W, Zhan S, Zhao X. Estimation of plastic eta factors for clamp-end SE(T) specimens with undermatched weld metal based on 3D finite element analyses[J]. Theoretical and Applied Fracture Mechanics, 2020,106:102496.
8. Li S, Zhu J, Zhao X, et al. Weld feature fitting and optimal lap rate model verification of laser direct metal deposition forming[J]. Applied Laser, 2023,43(09):49-55
9. The Contrast of Defect Tested by PAUT and RT[J]. NDT, 2016,38(01):41-43.
10. Zhao X, Wang F, Guo H. Research of Phased Array Testing of Style T Non-parallel Wing Panel[J]. Foundry Technology, 2016,37(01):193-195.
11. Zhao X, Ma Y, Sun G. Research Progress of Micro-are Oxidation Process for Magnesium Alloy[J]. Foundry Technology, 2013,34(01):45-47.
12. Sun H, Zhu J, Zhang B, Liu C, Miao C, Wang K, Zhao X. Optimization of Laser-MAG Hybrid Welding Parameters of Ship Steel Based on Response Surface Methodology[J]. Materials, 2022, 15(12):4328.
13. Dong H, Ma Y, Wang S, Zhao X. Effect of growth rate on microstructure and corrosion resistance of micro-arc oxidation coatings on magnesium alloy[J]. Rare Metal Materials and Engineering, 2017,46(9):2399-2404.
14. Kou R, Sun H, Zhao X, et al. Domestic research progress of ship curved seam tracking technology[J]. Hot Working Technology, 2022,51(19):7-12
15. Zhu Y, Sun H, Zhu J, Zhao X. Development and Application Status of Small and Medium Sized Assembly Welding Robot in Ship[J]. Ship Engineering, 2022,44(01):104-111
IV. Patents and Software Copyrights
1. Zhao X, Wang F, Pei S. Phased Array Testing Method for T-Shaped Non-Parallel Wing Plate Structures, Chinese Invention Patent, ZL201410831927.X, Grant Announcement Date: September 8, 2017.
2. Zhao X. High-Speed Preprocessing Software 1.0 for J-Integral Calculation of Circumferential Surface Cracks in Submarine Pipelines, Registration No.: 2021SR2213270, Date: December 29, 2021.
V. Drafting Standards
1. National Standard GB/T 35367-2017 X-ray Testing and Quality Classification of Titanium Alloy Butt Welds for Submersibles, Co-author, Ranked 2nd.
2. National Standard GB/T 35361-2017 Ultrasonic Testing and Quality Classification of Titanium Alloy Butt Welds for Submersibles, Co-author, Ranked 6th.
VI. Admissions Information
We primarily recruit Master's students in Mechanical Engineering (Academic Degree, Code 0802) and Mechanical Engineering (Professional Degree, Code 0855). Applicants with backgrounds in mechanics, welding, materials science, computer science, and related majors are warmly welcomed.