講座時間：2019-09-12 10:00至16:00

講座地點：南校區(qū)信遠2區(qū)206

講座1：Application of Fracture Mechanics to Structural Life Assessment

講座人：Aleksandar Sedmak

講座人介紹：

塞爾維亞貝爾格萊德大學機械工程學院教授，同時是貝爾格萊德機械工程學院創(chuàng)新中心負責人。2006-2009，擔任貝爾格萊德大學副校長。2003-2006年，擔任塞爾維亞科技發(fā)展部副部長；1999-2002年，擔任美國費城Drexel大學客座教授； Sedmak教授既是歐洲的結(jié)構(gòu)完整性學會副會長（ESIS），彈塑性斷裂力學技術委員會（TC1）的成員和TC13聯(lián)席主席，又是塞爾維亞結(jié)構(gòu)力學和社會壽命（DivK）研究所的負責人。在科學研究領域，Sedmak教授在ISI庫期刊上發(fā)表了100余篇論文，且在國際會議上發(fā)表了200多篇論文，內(nèi)容涉及斷裂力學、疲勞、結(jié)構(gòu)可靠性和壽命，數(shù)值方法（有限元法），生物材料等多個領域。培養(yǎng)出50多個博士生，其中包括在羅馬尼亞，馬其頓和斯洛文尼亞的外國大學就讀的學生。他也是羅馬尼亞布拉索夫大學的名譽教授。

講座內(nèi)容：

Theoretical basis for fracture mechanics parameters has been discussed, starting from the conservation law of J integral type. Twofold meaning of J integral, one as crack driving force, and the other, as material crack resistance, has been used to apply fracture mechanics basic concept to assess structural integrity and life of different critical components, exposed to fatigue. Remaining life is the focus of investigation, using the empirical laws for crack growth rates. Numerical simulations for fatigue crack growth are inherently complex both due to complex material damage processes and lack of sound theoretical basis to define them. Anyhow, combination of theoretical, experimental and numerical approach is presented which has enabled reliable and efficient estimation of life.

講座2：The research of human factor influence on risk in open pit mine

講座人：Snezana Kirin

講座人介紹：

隸屬于貝爾格萊德大學諾維薩德分校，任機械工程學院創(chuàng)新中心主任，在科研上主要從事數(shù)學建模與優(yōu)化、風險估計與安全管理等課題，具有工業(yè)風險與安全管理國際任教資格，發(fā)表學術論文80多篇，主持塞爾維亞教育與科學委員會項目一項，主持國際合作項目三項。

講座內(nèi)容：

With the increase in the number of risks and the complexity of technological-human systems, the number of potentially endangered people, environments and material resources also increase. When referring about risk management, "the human factor" means the collection and analysis of information about human abilities, their limitations and other characteristics in the context of the work they do, their mutual interaction and interaction with machines, systems and environments in order to realize secure workflow. People run the machine, make and adjust the organization of the work process and apply the rules and procedures. While the technology and work processes today are changing quickly and relatively easy, that is not the case with people. Presented research is conducted in the open pit coal mine, in 2017, during working hours, at the subject’s workplace, using a survey specially developed for this occasion. In the mine itself, risk assessment in the workplace is seen as a process which takes into account all work aspects and conditions, and determines the risk of injury or health conditions of employees.

講座3：Probabilistic engineering mechanics random vibrations in mechanical systems

講座人：Natasa Trisovic

講座人介紹：

塞爾維亞貝爾格萊德大學機械工程學院副教授，CEEPUS(Central European Exchange Program for University Studies) 計劃成員，捷克工程大學力學工程學院客座教授（2009），波西尼亞巴尼亞盧卡大學力學工程學院客座教授（2010，2012），斯洛伐克科技大學力學工程學院客座教授，美國萊斯大學MEMS學院客座教授（2012-2014），EUREKA 計劃 和ESPRIT 項目成員，塞爾維亞結(jié)構(gòu)完整性與生命協(xié)會成員，塞爾維亞力學學會秘書長，研究方向為理論與應用力學，主要集中于對結(jié)構(gòu)系統(tǒng)振動疲勞可靠性的數(shù)值研究。發(fā)表學術論文60多篇，參加項目10余項。

講座內(nèi)容：

In pursuing solution techniques for probabilistic analysis of real-world problems with known qualitative patterns, one should be willing to compromise the accuracy to enhance the versatility or the efficiency of the technique. Stochastic treatments of engineering problems should conform to the prevalent physical features. On the other hand, intuitive decision making in a setting of uncertainty should be scrutinized by rigorous mathematical techniques as intuition can be erroneous. The lecture will focus on available tools for conducting random vibration analyses for practical engineering problems. An inherent aspect of this theme is the simultaneous existence of elements with linear behavior, and of elements of nonlinear behavior within the system. In this regard, techniques both for linear and nonlinear random vibration analyses will be discussed. Attention will be focused on traditional techniques such as statistical linearization and Monte Carlo simulation. Further, emerging techniques, such as wavelets as a tool for signal and response localization, and fractional calculus as a tool for capturing non-local behavior will be discussed. Relevant examples of the application will be considered.

講座4：Wastewater treatment

講座人：Tomislav Trisovic

講座人介紹：

Tomislav Trisovic教授于2004年在貝爾格萊德大學科技與冶金學院獲得博士學位，主要研究電子化學、污水處理等課題。在國際期刊發(fā)表重要學術論文二十余篇，獲得技術專利19項，是塞爾維亞冶金協(xié)會會員。主持10余項國際合作項目，先后獲得技術創(chuàng)新獎、金牌勛章等獎勵。

講座內(nèi)容：

The aim of this study was to develop a low-cost electrochemical device for the production of disinfectant, active chlorine, at the place of its usage, based on newly developed technical solutions and newest commercial components. The projected electrochemical device was constructed and mounted, and its operation was investigated. Investigations involved both functionality of individual components and device in general. The major goal of these investigations was to achieve maximal efficiency in extreme condition of elevated room temperature and humidity with a novel device construction involving coaxial heat exchanger at the solution inlet. Room operation of the proposed device was investigated when relative humidity was set to 90% and the ambient temperature of 38°C. The obtained results in such extreme operation conditions reveled that it was possible to obtain required concentration of 0.85% of active chlorine with maximal temperature of outlet electrolyte of 35.3°C, which is within the limits of optimal temperatures.

主辦單位：數(shù)學與統(tǒng)計學院