9/30(一)專題演講公告

演講人Professor Donald S. Shih

服務單位日本熊本大學鎂合金研究所

演講題目

Integrated Computational Materials Engineering (ICME) - An advanced methodology for R&D of new materials and processes to accelerate applications

演講時間108930(星期一)早上1020

演講地點工綜館203國際演講廳

演講摘要

Integrated computational materials engineering (ICME) is a new R&D methodology that has been making important advances in materials science and engineering. Combining the theoretical models, experimental tools and digital data, it could not only make the R&D progress and results more robust, but also accelerate the critically needed transition. The two most important factors of low risk tolerance and long product cycles have a profound impact to make aerospace a most difficult industry to find benefit in ICME. This challenge is exacerbated by a large product scale and a correspondingly large component scale, which lead to substantial kinetic differences between the laboratory and production. However, considerable needs persist for cost and weight reduction, and more critically, for accelerating the introduction of materials that enable such improvements. In this presentation, I will try to deconstruct the life cycle of aircraft materials and identify where ICME can offer substantial value. Several examples of the application of computational methods to aerospace materials problems will be presented, from exploratory material design, to scale-up simulations, to the estimation of damage tolerance properties, and for polymer and metallic systems. Specific areas where ICME development is required will be highlighted. These tools will be relevant and pointed to general and specific aerospace materials and the R&D. Modeling and microstructural development during processing and machining of Ti and Mg alloys will also be discussed.

I will also present some highlights of the KUMADAI Mg alloy system. It is the ultrahigh strength and heat resistant Mg alloy system that has been developed at the Magnesium Research Center of the Kumamoto University. The microstructure of the alloy system, Mg-Zn-Y, is consisted of alpha-Mg and LPSO phases and it is highly strengthened by the LPSO phase and kinking mechanism.