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Materials Science and Nanotechnology | Volume: 03
WORLD CONGRESS ON SMART MATERIALS AND STRUCTURES
&
3rd International Conference on
POLYMER CHEMISTRY AND MATERIALS ENGINEERING
November 21-22, 2019 | Singapore
Joint event on
The last few decades have clearly demonstrated the
vulnerability of civil structures to problems related to
aging and natural or man-made hazards. Conventional
materials have proven to be limited in terms of their ability
to withstand the extreme demands imposed on them by
modern societies. Hence, there is growing interest in the
application of innovative and smart materials to extend the
service life of civil structures. This presentation will discuss
one particular class of smart materials, namely shape
memory alloys (SMAs) and their potential applications in
civil structures. SMAs have recently emerged as a potential
construction material with unique thermomechanical
phenomena, namely shape memory effect and
superelasticity. These phenomena are related to the ability
of SMA to recover its original shape after being extremely
deformed beyond its elastic range. Both phenomena have
attracted the attention of researchers and practitioners in
the structural engineering industry. This presentation will
provide three examples of the recently studied applications
of SMAs in civil structures. The first application involves
the use of SMA in performing seismic retrofit and repair
of bridge columns. In this application SMA is used in the
form of thermally-prestressed spirals that can apply large
active confinement pressure to the columns. The second
application focuses on utilizing superelastic SMA as seismic
dampers and restrainers for bridges. The recentering
capability of SMA is sought to prevent failure during strong
ground motions. Finally, the third application focuses
on developing a new type of fiber reinforced polymer
composite reinforced with superelastic SMA fibers. The
newly developed composite material is studied as seismic
reinforcing bars for buildings. In all three applications, the
performance of the proposed SMA technology is compared
with that of conventional and currently used technologies.
Biography
Bassem Andrawes is a professor and CEE excellence faculty fellow in the
department of civil and environmental engineering at the University of
Illinois at Urbana-Champaign (UIUC), USA. He received his Ph.D. degree
from Georgia Institute of Technology in 2005. He has been on the faculty
at UIUC since 2006. His research interests are primarily in the areas of
application of smart materials in civil structures subjected to natural and
man-made hazards, constitutive modeling and testing of shape memory
alloys under extreme dynamic loads, and large-scale experimental testing.
He has over 130 publications. He is a recipient of the prestigious US
National Science Foundation (NSF) CAREER award. He has served or is
currently serving as the chair of several technical committees associated
with the American Society of Civil Engineers (ASCE) and the American
Concrete Institute (ACI).
e:
Bassem Andrawes
University of Illinois at Urbana-Champaign, USA
Application of shape memory technology in civil structures
Mater Sci Nanotechnol, Volume: 03