Research Areas

Artificial intelligence: Machine learning ● Deep learning ● Data analysis ● Computer vision ● Image captioning

Various types of composites: Laminate composites ● Braided textile composites ● Woven fabric composites ● Short fiber composites

Various types of analyses: Micro-mechanics ● Meso-mechanics ● Multi-scale FEM analysis ● Failure & Fatigue prediction ● Structure design & optimization

Work Experience

2019 - Now      Amazon      ●      Data scientist

2017 - 2019      NVIDIA      ●      Deep learning solution architect

2015 - 2017      Kuang-Chi institute of advanced technologies     ●      Machine learning section     ●      Research director

2014 - 2015      Hanyang University     ●     Structures and composites laboratory      ●      Post-doctoral researcher

Projects

2017 - Now · Parametric modeling of woven fabric composites using deep neural networks (DNNs).

2016 - 2017 · Real-time facial expression recognition using deep learning-based approaches.

2015 - 2016 · Software development for meta-material design platform coupling with CST software.

2015 - 2016 · Control software development for multi-robot coordinate system.

2015 - 2016 · Composite lay-up design of a jet-fighter vertical wing structure.

2014 - 2015 · FEM modeling of various types of woven composites using Python.

2012 - 2015 · Fatigue life prediction of short fiber-reinforced composites using a multi-scale method.

2013 - 2014 · Durability design of composites aerospace structures using woven fabrics.

2012 - 2013 · Failure and strength prediction of braided composites with progressive damage propagation.

2011 - 2012 · FEM modeling of braided composites using Python script and prediction of engineering constants.

2010 - 2012 · Fatigue life prediction of composites using a micromechanics-based method

2010 - 2012 · Simulation of the deep drawing and hot forming processes for the vehicle battery can.

2009 - 2010 · Structural design and FEM analysis of LNG tank.

Publications

2018 · Progressive failure prediction of short fiber reinforced composites using a multi-scale approach (Journal)

Sung Kyu Ha, Lei Xu*, Chao Zhao, and Matthias DeMonte, Journal of Composite Materials 2018; doi:10.1177/0021998318770252

2016 · Progressive failure prediction of woven fabric composites using a multi-scale approach (Journal)

Lei Xu, YuanChen Huang, Chao Zhao and Sung Kyu Ha, International Journal of Damage Mechanics 2016; doi:10.1177/1056789516663613

2014 · Ultimate strength prediction of braided textile composites using a multi-scale approach (Journal)

Lei Xu, Cheng Zhu Jin and Sung Kyu Ha, Journal of Composite Materials 2014; 46(18): p. 2255-2270

2012 · Prediction of material properties of biaxial and triaxial braided textile composites (Journal)

Lei Xu, Seong Jong Kim, Cheng-Huat Ong and Sung Kyu Ha, Journal of Composite Materials 2012; 46(18): p. 2255-2270

2014 · Effect of shallow-angled skins on the structural performance of the large-scale wind turbine blade (Journal)

Sung Kyu Ha, Khazar Hayat, and Lei Xu, Renewable Energy, 2014. 71(0): p. 100-112

2012 · Prediction of three-dimensional composite laminate response using micromechanics of failure (Journal)

Yuanchen Huang, Lei Xu and Sung Kyu Ha, Journal of Composite Materials 2012; 46(19-20): p. 2431-2442

2015 · A numerical study on the impact resistance of braided composites (Conference)

Lei Xu, Khyzar Hayat, M.T. Hussain, International Conference of Aerospace Science and Engineering (ICASE2015), 2015

2012 · Multi-scale fatigue life prediction method for composites: application to wind turbine blades (Magazine)

Sung Kyu Ha, Yuanchen Huang, Khazar Hayat, Lei Xu and Chengzhu Jin, Innovative Composite Summit, 2012, JEC, Singapore

2011 · A micromechanical methodology for fatigue life prediction of polymeric matrix composites (Conference)

Yuanchen Huang, Kyo Kook Jin, Lei Xu, Ghulam Mustafa and Sung Kyu Ha, International Conference on Composite Materials (ICCM), 2011

2010 · Modeling and analysis of biaxial and triaxial braided composites (Presentation)

Lei Xu and Sung Kyu Ha, Composite Design Workshop (CDW), 2010, Japan

Awards

2009 - 2014 · PhD candidate supported by China Scholarship Council (CSC)

2009 - 2013 · Excellent student scholarship supported by The Ministry of Education of Korea (BK21)

2009 · Excellent undergraduate thesis in School of Mechanical Engineering of Harbin Institute of Technology (HIT)

2006 · The third-level scholarship for excellent students in Harbin Institute of Technology (HIT)