Prof. Shuguang Li
Professor of Aerospace Composites, Faculty of Engineering
The University of Nottingham , UK
Time：2:00PM 2nd May，2016
Address：Room326, Cao Building, Yuquan Campus
Inviter：Prof.Hua-xin Peng
Prof. Shuguang Li is a Professor of AerospaceComposites, Faculty of Engineering, University of Nottingham, UK. Researchinterests include composite materials and structures, damage and failure ofcomposite materials, impact properties of composite materials, space structuredesign, finite element analysis, micromechanical structures, large deformation analysis,design and analysis of pressure vessel and shell structure i.e..
Summary
Theories for damageand failure of fibre reinforced composites are of such a rich abundancy thatusers are often led to a desperate state of confusion when they have to selectappropriate theories for their specific applications. The series of WorldWide Failure Exercises (WWFEs) have made significant contributions to theclarification of the position, where a wide range of popular theories have beensubjected to critical reviews based primarily on comparisons with a large butstill limited number of experimental data. However, there has been lackof a systematic review of the rationality of these theories. The lectureis to make an attempt along this line.
Rationality of a theoryis about the mathematical and physical logic underlying the theory, not so muchabout the closeness of their comparisons with experimental data. Seekingfor close comparisons with a set of experimental data before obtaining a basiclevel of rationality is not a scientific attitude, although the practice isbecoming the norm in the community of science and engineering. Anirrational theory can never be a sound one no matter how closely it compareswith experimental data in one respect or another, as it will never be able tocompare well with experiments in all respects. Usually, a good comparisonin one respect is at the price of bad ones in some other respects, eitherunknown for the time being or hidden deliberately.
In the lecture, anumber of typical and popular theories of damage and failure of fibrereinforced composites will be critically reviewed in terms of theirrationality. The objective of the lecture is to raise users’ aware of rationality ofexisting theories so that the users can be informed when select appropriatetheories for their applications in future. For researchers formulatingnew theories, the lecture is to help them prevent illogical considerations frombeing incorporated in the theories they are developing.
InCSI Special Composites Seminar (No.3)
