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Advanced Direct Method for the Structural Design and Life Assessment of Component

Release time:April 17, 2017 / Siying He

Topic:

Advanced Direct Method for the Structural Design and Life Assessment of

Component

Speaker:Professor Haofeng Chen

Date:April 19th (Wednesday 9:30-11:00 AM

Venue:the third conference hall, new main building

 

Abstract:

Engineering design and integrity assessment of mechanical structures subjected to cyclic thermal and mechanical loads is an important technological challenge, with long-term research and industrial implications. In order to improve industrial practice in structural design and life assessment, and advance the internationally-leading role of the UK in the assessment of industrial and commercial mechanical structures, in particular, in underpinning moves to the high temperature structures required for emissions reduction targets, novel direct methods, encapsulated in state-of-the art software, for the design and life assessment of mechanical structures, have been developed to enhance both UK’s R5 procedure for the high temperature response of structures and R6 procedure for defect assessment below the creep range. These novel direct methods, based upon the Linear Matching Method (LMM) framework, can be applied to the entire sequence of procedures required for high-integrity structural life assessment, and have been successfully developed and transferred by the speaker and his colleagues into the UK engineering industry including the EDF Energy and Rolls-Royce, where they are now in extensive use to improve and optimize structural life assessment procedures. In this talk, the development and application of novel direct methods for the design and life assessment of mechanical structures will be introduced for various problems encountered in current structural integrity assessment methodologies, including shakedown and limit analysis, ratchet analysis, low cycle fatigue, creep damage, creep and fatigue interaction for a wide range of key practical problems including an Advanced Gas-cooled Reactor (AGR) superheater header component, defective pipelines, and welded structures. Being part of R5 code, the LMMs transform current integrity assessment practice by requiring less specialized user input, reducing cost and time, and improving quality.          

 

Brief Intro of the Speaker:

Professor Haofeng Chen is a Reader and PhD supervisor at the Department of Mechanical and Aerospace Engineering, University of Strathclyde, UK, and a Chair Professor of East China University of Science and Technology. He has also been appointed or awarded as the Royal Academy of Engineering Senior Research Fellow, Associate Editor of the ASME Journal of Pressure Vessel Technology, Fellow of The Institution of Mechanical Engineers, Fellow of the Higher Education Academy and Chartered Engineer. He earned two Bachelor degrees in engineering mechanics and economic management from Tsinghua University in 1994, and his MEng and PhD in solid mechanics from Tsinghua University in 1995 and 1998, respectively. He was then a research fellow in the School of Mechanical and Production Engineering at Nanyang Technological University, and subsequently a research fellow in the Department of Engineering at the University of Leicester. From 2006 to 2008, he was a chartered senior engineer at ALSTOM Power Technology Centre (Rugby, UK), working in the Mechanical Integrity Group of the Technology and Design Department. In 2008, he joined the Department of Mechanical and Aerospace Engineering at the University of Strathclyde as a Lecturer. In recognition of his research achievements, he was promoted to Senior Lecturer (Associate Professor) in 2010, and then Reader in 2015. Since joining Strathclyde University in 2008, he has established and leads the Structural Integrity and Life Assessment Research group. He has built a major and sustainable research portfolio in structural integrity engineering, particularly in the field of fracture mechanics, shakedown, ratchetting, high temperature creep and fatigue analysis. As a pioneering developer of the Linear Matching Method (LMM), which can be applied to the entire sequence of procedures required for high-integrity structural life assessment, he has successfully transferred the LMM from research into the engineering industry where it is being used to improve and optimize structural life assessment procedures. He holds up to two million pounds in research funding as the principal investigator from the UK Engineering and Physical Sciences Research Council (EPSRC), Royal Society, Royal Academy of Engineering, EPSRC Nuclear EngD Centre, and many industrial partners including EDF Energy, Rolls-Royce, and Siemens UK.          

 

School of energy and power engineering