scholarly journals Applications of shape memory alloys in civil engineering structures—Overview, limits and new ideas

2005 ◽  
Vol 38 (5) ◽  
pp. 578-592 ◽  
Author(s):  
L. Janke ◽  
C. Czaderski ◽  
M. Motavalli ◽  
J. Ruth
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Civil Engineering ◽  
Engineering Structures ◽  
New Ideas ◽  
Civil Engineering Structures

Iron-based shape memory alloys for civil engineering structures: An overview

2014 ◽  
Vol 63 ◽  
pp. 281-293 ◽  
Author(s):  
A. Cladera ◽  
B. Weber ◽  
C. Leinenbach ◽  
C. Czaderski ◽  
M. Shahverdi ◽  
...  
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Civil Engineering ◽  
Engineering Structures ◽  
Iron Based ◽  
Civil Engineering Structures

Toward an adaptive vibration absorber using shape-memory alloys, for civil engineering applications

2017 ◽  
Vol 29 (5) ◽  
pp. 729-740 ◽  
Author(s):  
Filipe Amarante dos Santos ◽  
João Nunes
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Civil Engineering ◽  
Numerical Models ◽  
Vibration Absorber ◽  
Temperature Modulation ◽  
Engineering Structures ◽  
Joule Effect ◽  
Control Approach ◽  
Civil Engineering Structures

This article explores the capabilities of a novel adaptive vibration absorber for civil engineering structures, with regard to frequency self-tuning, based on the temperature modulation of shape-memory alloy restitution elements. This real-time temperature modulation of shape-memory alloys, through Joule effect, enables to control the elastic modulus of these elements, by inducing thermal martensitic transformations, and allows for the adaptation of the stiffness of the absorber, in order to be continuously tunable for a wide frequency range. A series of simulations are performed, using numerical models of a lively footbridge, to give an additional insight into the high potentialities of this adaptive control approach in the mitigation of vibrations in civil engineering structures.

A study of the 20 January 1982 earthquake near Great Nicobar Island, India

1983 ◽  
Vol 73 (4) ◽  
pp. 1139-1159
Author(s):  
P. N. Agrawal
Keyword(s):  
Future Development ◽  
Bay Of Bengal ◽  
East Coast ◽  
Civil Engineering ◽  
Nicobar Island ◽  
Engineering Structures ◽  
Ground Fissures ◽  
Isoseismal Map ◽  
Damage Data ◽  
Civil Engineering Structures

abstract An earthquake of MS = 6.3 occurred on 20 January 1982 near the east coast of Great Nicobar Island (in the Bay of Bengal), India and caused great panic among the inhabitants. Ground Fissures and damage to civil engineering structures was also caused. A study comprised of the recording of aftershocks and their migration, the preparation of an isoseismal map, and the compilation of other damage data is presented. Some recommendations have been made to permit suitable safeguards in future development.

scholarly journals Use of Time- and Frequency-Domain Approaches for Damage Detection in Civil Engineering Structures

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
V. H. Nguyen ◽  
J. Mahowald ◽  
S. Maas ◽  
J.-C. Golinval
Keyword(s):  
Damage Detection ◽  
Frequency Domain ◽  
Prestressed Concrete ◽  
Civil Engineering ◽  
Damage Identification ◽  
Real Life ◽  
Hankel Matrix ◽  
Principal Component ◽  
Engineering Structures ◽  
Civil Engineering Structures

The aim of this paper is to apply both time- and frequency-domain-based approaches on real-life civil engineering structures and to assess their capability for damage detection. The methodology is based on Principal Component Analysis of the Hankel matrix built from output-only measurements and of Frequency Response Functions. Damage detection is performed using the concept of subspace angles between a current (possibly damaged state) and a reference (undamaged) state. The first structure is the Champangshiehl Bridge located in Luxembourg. Several damage levels were intentionally created by cutting a growing number of prestressed tendons and vibration data were acquired by the University of Luxembourg for each damaged state. The second example consists in reinforced and prestressed concrete panels. Successive damages were introduced in the panels by loading heavy weights and by cutting steel wires. The illustrations show different consequences in damage identification by the considered techniques.

Application of optical fibre sensors for monitoring civil engineering structures

2001 ◽  
Vol 2 (2) ◽  
pp. 63-71 ◽  
Author(s):  
Wim Moerman ◽  
Luc Taerwe ◽  
Wim De Waele ◽  
Joris Degrieck ◽  
Roel Baets
Keyword(s):  
Optical Fibre ◽  
Civil Engineering ◽  
Engineering Structures ◽  
Optical Fibre Sensors ◽  
Civil Engineering Structures
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