Using infrared thermography to study hydrostatic stress networks in granular materials

© The Royal Society of Chemistry 2014. The macroscopic mechanical behaviour of granular materials is governed bymicroscopic features at the particle scale. Photoelasticimetry is a powerful method for measuring shear stresses in particles made from birefringent materials. As a complementary method, w...

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Main Authors: Pawarut Jongchansitto, Xavier Balandraud, Michel Grédiac, Clément Beitone, Itthichai Preechawuttipong
Format: Journal
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84908056735&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/44942
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-449422018-01-24T06:01:44Z Using infrared thermography to study hydrostatic stress networks in granular materials Pawarut Jongchansitto Xavier Balandraud Michel Grédiac Clément Beitone Itthichai Preechawuttipong © The Royal Society of Chemistry 2014. The macroscopic mechanical behaviour of granular materials is governed bymicroscopic features at the particle scale. Photoelasticimetry is a powerful method for measuring shear stresses in particles made from birefringent materials. As a complementary method, we here identify the hydrostatic stress networks through thermoelastic stress analysis using infrared thermographic measurements. Experiments are performed on two-dimensional cohesionless monodisperse granular materials composed of about 1200 cylinders comprising two constitutive materials. We show that the experimental hydrostatic stress distributions follow statistical laws which are in agreement with simulations performed using molecular dynamics, except in one case exhibiting piecewise periodic stacking. Polydisperse cases are then processed. Themeasurement of hydrostatic stress networks using this technique opens new prospects for the analysis of granular materials. 2018-01-24T06:01:44Z 2018-01-24T06:01:44Z 2014-11-21 Journal 17446848 1744683X 2-s2.0-84908056735 10.1039/c4sm01968g https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84908056735&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/44942
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description © The Royal Society of Chemistry 2014. The macroscopic mechanical behaviour of granular materials is governed bymicroscopic features at the particle scale. Photoelasticimetry is a powerful method for measuring shear stresses in particles made from birefringent materials. As a complementary method, we here identify the hydrostatic stress networks through thermoelastic stress analysis using infrared thermographic measurements. Experiments are performed on two-dimensional cohesionless monodisperse granular materials composed of about 1200 cylinders comprising two constitutive materials. We show that the experimental hydrostatic stress distributions follow statistical laws which are in agreement with simulations performed using molecular dynamics, except in one case exhibiting piecewise periodic stacking. Polydisperse cases are then processed. Themeasurement of hydrostatic stress networks using this technique opens new prospects for the analysis of granular materials.
format Journal
author Pawarut Jongchansitto
Xavier Balandraud
Michel Grédiac
Clément Beitone
Itthichai Preechawuttipong
spellingShingle Pawarut Jongchansitto
Xavier Balandraud
Michel Grédiac
Clément Beitone
Itthichai Preechawuttipong
Using infrared thermography to study hydrostatic stress networks in granular materials
author_facet Pawarut Jongchansitto
Xavier Balandraud
Michel Grédiac
Clément Beitone
Itthichai Preechawuttipong
author_sort Pawarut Jongchansitto
title Using infrared thermography to study hydrostatic stress networks in granular materials
title_short Using infrared thermography to study hydrostatic stress networks in granular materials
title_full Using infrared thermography to study hydrostatic stress networks in granular materials
title_fullStr Using infrared thermography to study hydrostatic stress networks in granular materials
title_full_unstemmed Using infrared thermography to study hydrostatic stress networks in granular materials
title_sort using infrared thermography to study hydrostatic stress networks in granular materials
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84908056735&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/44942
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