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Materials Science and Nanotechnology | Volume: 03
WORLD CONGRESS ON SMART MATERIALS AND STRUCTURES
&
3
rd
International Conference on
POLYMER CHEMISTRY AND MATERIALS ENGINEERING
November 21-22, 2019 | Singapore
Joint event on
T
his research seeks to develop an innovative wearable
garment that will be used as a structural member of an
exoskeleton when it conducts its own tasks such as lifting
heavy loads, walking and running, as well as protecting the
human body fromexternal blunt impact. In order to design a
structure with elastic flexibilities in the soft wearable suit, it
is important to develop an auxetic unit cell with adjustability
of stiffness. This research proposes an enhanced auxetic
structure and examining its mechanical behavior in static
and impact load conditions. We focus on the nonlinearity
and shock-absorption performance of the structures.
FEA models were used to examine how the stiffness and
Poisson’s ratio are affected by static load conditions and
also how the dynamic loads are transmitted through the
auxetic structure. 3D printing techniques were used to
build fixtures and prototypes of the auxetic structures
and experiments of several specimens were conducted
to verify mechanical characteristics of the proposed
structures. Stiffness and Poisson’s ratio were examined
both in tensile and compression loading conditions and the
measured values of mechanical properties were compared
with the computational results. It was shown that the
proposed auxetic structures had nonlinear behavior and
excellent shock absorption performance, which could be
useful properties for developing body protection pads and
soft wearable suits.
Biography
Chulho Yang received a Ph.D. degree in Mechanical Engineering from
Purdue University at West Lafayette, IN, USA as well as M.S. and B.S.
degrees from Hanyang University in Korea. Before joining OSU in 2008,
he acquired 11 years of industrial experience with ArvinMeritor technical
center, IBM Korea, and KIA Motors R&D Center. Much of his work focused
on structural design and optimization, vehicle NVH test, sensitivity
analysis, structural health monitoring, human body protection, and
design methodologies. He registered many patents in the USA, Europe,
Japan, and Korea. He received an “Innovation and Achievement Award”
from ArvinMeritor, Inc., a "Best Paper Award" from the International
Symposium on Advanced Material and Mechanical Application, an
"Outstanding Presenter Award" from the International Symposium on
Green Manufacturing and Applications. He also served as a keynote
speaker or a session chair for multiple international conferences.
e:
chulho.yang@okstate.eduChulho Yang
Oklahoma State University, USA
Auxetic cell-structures applied to soft exoskeleton suits and
protection garments
Mater Sci Nanotechnol, Volume: 03