Seminar & Colloquium
[세미나: 8월 21일(수), 오전 10시] Dr. Hyung-Jun Chang, Safran Tech
Title
Multiscale modeling and its industrial application
Speaker
Dr. Hyung-Jun Chang, Research Engineer at Safran Tech, Paris-Saclay, France
* Education
- March 2002 ~ June 2009 Master and Ph.D. in Materials Science and Engineering, Seoul National University
- June 2006 Defense of Master degree, 2nd year (Grenoble INP)
- September 2006 ~ June 2009 Cotutelle Internationale Ph.D. (Grenoble INP and Seoul National University)
Title : Analysis of Nano indentation size effect based on Dislocation dynamics and Crystal plasticity (supervisors : Marc FIVEL, Laurent TABOUROT and Kyu Hwan OH)
- June 2009 ~ Sep 2015 3 Post Doctor experiences (Mines ParisTech Centre des Materiaux-France, University of Politecnica Madrid-Spain & IMDEA matereials-Spain)
Subjects: Multiscale modelling (FEM, CPFEM, DD, MD)
* Professional Experience
- 2015~Present Research Engineer – Safran Tech, Paris-Saclay, France
- 2013~2015 – Post-doc – Institute of IMDEA materials in Madrid, Spain
- 2011~2013 – Post-doc - University of Politecnica in Madrid, Spain
- 2009~2010 – Post-doc - Centre des Materiaux Mines ParisTech, Evry, France
| Date | Wednesday, August 21st , 2024
| Time | 10:00 ~
| Venue | 33동 222호(동부 세미나실)
[Abstract]
In this presentation, various modelling techniques within multiscale modeling domain and their industrial applications with three different scales (macro scale, micro scale and atomic scale) are briefly introduced. As the industry concerns typically macro scale products, the contribution of multiscale scale modeling techniques based on micro and atomic scale physics are very limited so far. Nevertheless, the physics based techniques provide excellent analysis solutions for better understanding the mechanical behaviors of industrial products.
For example, at first, crack propagation analysis technique is certainly one of essential techniques as a macro scale aerospace industrial application, where the technique can be enhanced by the multiscale approach. As another example, for the microscale industrial application, the dislocation dynamics can be an excellent analysis tool for understanding fatigue lifetime behavior. Indeed, many of complex fatigue behaviors (such as temperature effect, stress ratio of cyclic loading, R, effect, crack initiation site depending on loading stress level, etc.) can be explained by the dislocation dynamics point of view, which is very challenging approach though. Finally, the possible application of quantum mechanics for the industrial problem is also proposed and presented.
As a conclusion, all of the examples propose the possible further harmonies between industrial applications and academic techniques, which allows many creative and physics based solutions for complex industrial challenges.
| Host | 한흥남 교수(02-880-9240)