NDLI: The smart materials and their applications in the engineering fields

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2015 5th National Symposium on Information Technology: Towards New Smart World (NSITNSW)

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The smart materials and their applications in the engineering fields

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The smart materials and their applications in the engineering fields

Content Provider	IEEE Xplore Digital Library
Author	Necib, B. Gharbi, A. Lebied, A. Sahli, M.
Copyright Year	2015
Description	Author affiliation: Mech. Eng. Dept., Univ. of Constantine 1, Constantine, Algeria (Necib, B.; Gharbi, A.; Lebied, A.; Sahli, M.)
Abstract	The behavior of discrete or continuum structures under impact forces makes their risk and damage mechanisms more and more complex and may causes crack propagations between their different elements or plies even at low impact velocities. In this context, the internal structural failure and crack propagation analysis of composite materials under the effect of external solicitations has been studied. As a result, several microscopic and macroscopic defects may appear within the composite structure that may produce their destruction or the disaster of the hall material. To prevent this phenomenon, adaptable or “smart” materials are incorporated between the fibers of the material in order to control their health state and to determine the weakness of their structure or the beginning of their failure. Consequently they will adapt adequate answers by announcing specific modification or by causing specific actions of correction which will appear in the environment and will protect the material or the structure from the hall disaster. The application fields of these types of smart and adaptable materials are of a great importance in the areas of new technologies such as in tall buildings and bridges to prevent their disaster from the earthquakes and external excitations. They are also operationally used in space structures, in aeronautic constructions and in biomechanics or medical professions to control their behavior and to allow them to get to their initial positions after large deformations or high internal stresses before their total destruction. These materials or structures are made of new materials and/or systems which allow them to fell and control their own characteristics and their own state to attain a higher level of operational performance than those of conventional materials or structures. In our work, smart materials with shape memory alloy and piezoelectric materials, their definitions, their principle works and their super thermo elasticity phenomenon will be considered. The crack propagation analysis of a laminate composite material of carbon/epoxy types under the effect of the external forces was studied. It was found that during the appearance of cracking in the matrix, a discontinuity of the curve stress/strain is observed. It was also noted that the appearance of the cracks increases in a more particular way when the loads are applied perpendicularly to fibers. The control of this crack propagation was reached using adaptable sensors of PZT types and the finite element models to get the displacement at every nodal point. It was noted that the presence of delamination fibers is observed when the PZT static capacity induces a brutal increase in electrical tension which explain the apparition of the crack propagation.
Starting Page	1
Ending Page	8
File Size	394118
Page Count	8
File Format	PDF
e-ISBN	9781479976263
DOI	10.1109/NSITNSW.2015.7176419
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-02-17
Publisher Place	Saudi Arabia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Actuators Temperature Laminated Composites External solicitations Shape Composite materials Aerospace electronics Stress Smart materials Strain Disaster protections and finite elements Crack propagation
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Analysis of crack propagation as an energy absorption mechanism in metal matrix composites

Analysis of structural elements made of composite materials with defects

Three-dimensional stress analyses around cutouts in laminated composites by special hybrid finite elements

Growth of matrix cracks during intermediate temperature stress rupture of a sic/sic composite in air

Moisture effects on the bending fatigue of laminated composites

Fatigue Crack Propagation Behavior in Residual Stress Fields of Laminated Inhomogeneous Metals

Modeling of stress/strain behavior of fiber-reinforced ceramic matrix composites including stress redistribution

Investigation on the Crack Behaviour in Kevlar 49 Based Composite Materials using Extended Finite Element Method for Aerospace Applications

Proposed framework for thermomechanical life modeling of metal matrix composites

The smart materials and their applications in the engineering fields

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