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1.025
Q1(Year 2015)
ISSN : 1026-3098
e-ISSN : 2345-3605
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Publication Information : Volume 22 - Number 3 - Successive Number 3
Type : Article
Topics of Paper : Transaction on Civil Engineering
English Title : Measuring wave velocity, damping and stress-strain behaviors of geo-materials using GAP-SENSOR
English Abstract : A triaxial testing system is described for measuring the wave velocity, sti ness, damping and stress-strain behavior of layered granular materials and rock specimens under impact, cyclic and monotonic loading. The system is equipped with high-frequency GAPSENSORs (GSs) in front of target plates connected on the side of a specimen surface to measure wave velocity, axial and radial deformations locally, LDTs to measure axial and radial deformations locally, and a load cell. Based on the rst arrival of compressional wave of the deformation time-histories under impact loading, the pulse velocity is evaluated. In addition, using a reduced deformation amplitude technique at di erent elevations of the specimen, damping ratio is calculated. Results indicate that measurement of the wave velocity and damping ratio using low noise level GSs is a simple,  nondestructive and reproducible method. Comparing the results of small strain shear modulus and damping ratio using local axial and radial strains measured by LDTs and GSs in the cyclic loading, with those of the proposed method, the high precision of the used innovative method is con rmed. Using this system, a continuous stress-strain relation for a strain range of 0.0001% to several % can be obtained fro  a single test using a single specimen.
English Keywords : Wave velocity; Modulus; Damping; Monotonic; Dacite; Mudstone; Tire chips; Toyoura.
Refrences :
Number Of Pages :
From 679 to 698


Authors :
The AuthorAuthor SequenceOrganizationOrganization ( english )AffiliationEmailEducation
Dr. A. Aghaei Araei
(Author)
1Department of Geotechnical Engineering, Road, Housing and Urban Development (BHRC), Tehran, P.O. Box 13145-1696, Iran    
Prof. I. Towhata 2Geotechnical Engineering Group, Department of Civil Engineering, University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, P.O. Box 113-8656, Japan Professor  
Dr. H.R. Razeghi 3School of Civil Engineering, Iran University of Science and Technology (IUST), Tehran, P.O. Box 16765-163, Iran Associate Professor  
Dr. S. Hashemi Tabatabaei 4Department of Geotechnical Engineering, Road, Housing and Urban Development (BHRC), Tehran, P.O. Box 13145-1696, Iran Associate Professor  
Published Issues
2017
Transactions on Civil Engineering
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Transactions on Industrial Engineering
2016
2015
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
Transactions on Nanotechnology
2014
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
Transactions on Nanotechnology
2013
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
Transactions on Nanotechnology

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