Determination of stress intensity factors due to thermal stresses using isochromatic fringe patters
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo de conferência |
Título da fonte: | Repositório Institucional do IPEN |
Texto Completo: | http://repositorio.ipen.br/handle/123456789/18334 |
Resumo: | Transmission photoelasticity was used to obtain an experimental solution for stress intensity factors, KI, due to thermal loads in photoelastic models. In a photoelastic plate, a slot to simulate a crack was introduced. Also, a tube to circulate a coolant was fixed in one of the edges of the plate. The photoelastic model was putted on a photoelastic oven and kept at 60 ??C. Then, methyl alcohol at -15 ??C circulated through the cooling tube. The thermal shock in the plate caused stress on it and, as a consequence, transient photoelastic fringe patterns appeared and were captured by an image acquisition system. For each captured photoelastic fringe pattern, the stress intensity factor KI was determined using a dedicated software, specially developed to do it, based on the Dally overdeterministic method. This results are compared with numerical analyses. Based on the obtained results, some conclusions and recommendations on the experimental techniques used were addressed. The paper present a alternative experimental methodology for evaluation of stress intensity factors due thermal loads. The construction of the models can be very simple, the used equipments can be of easy acquisition or manufacture. In this aspect, it should be noticed that in spite of the polariscope used in this work is quite sophisticated, it is necessary a rudimentary polariscope to conduct these type of experiments, just constituted of a light source and plane polarizers plates easily found. |
id |
IPEN_baadec184f7a2da0806123d560157e02 |
---|---|
oai_identifier_str |
oai:repositorio.ipen.br:123456789/18334 |
network_acronym_str |
IPEN |
network_name_str |
Repositório Institucional do IPEN |
repository_id_str |
4510 |
spelling |
2014-11-17T18:45:51Z2014-11-18T18:52:18Z2015-04-02T02:27:03Z2014-11-17T18:45:51Z2014-11-18T18:52:18Z2015-04-02T02:27:03ZNov. 6-11, 2005http://repositorio.ipen.br/handle/123456789/18334Transmission photoelasticity was used to obtain an experimental solution for stress intensity factors, KI, due to thermal loads in photoelastic models. In a photoelastic plate, a slot to simulate a crack was introduced. Also, a tube to circulate a coolant was fixed in one of the edges of the plate. The photoelastic model was putted on a photoelastic oven and kept at 60 ??C. Then, methyl alcohol at -15 ??C circulated through the cooling tube. The thermal shock in the plate caused stress on it and, as a consequence, transient photoelastic fringe patterns appeared and were captured by an image acquisition system. For each captured photoelastic fringe pattern, the stress intensity factor KI was determined using a dedicated software, specially developed to do it, based on the Dally overdeterministic method. This results are compared with numerical analyses. Based on the obtained results, some conclusions and recommendations on the experimental techniques used were addressed. The paper present a alternative experimental methodology for evaluation of stress intensity factors due thermal loads. The construction of the models can be very simple, the used equipments can be of easy acquisition or manufacture. In this aspect, it should be noticed that in spite of the polariscope used in this work is quite sophisticated, it is necessary a rudimentary polariscope to conduct these type of experiments, just constituted of a light source and plane polarizers plates easily found.Made available in DSpace on 2014-11-17T18:45:51Z (GMT). No. of bitstreams: 0Made available in DSpace on 2014-11-18T18:52:18Z (GMT). No. of bitstreams: 1 11047.pdf: 1195834 bytes, checksum: 0913b8501ff4a5273689028357d5c1a7 (MD5)Made available in DSpace on 2015-04-02T02:27:03Z (GMT). No. of bitstreams: 1 11047.pdf: 1195834 bytes, checksum: 0913b8501ff4a5273689028357d5c1a7 (MD5)stress intensity factorsthermal stressesphotoelasticityDetermination of stress intensity factors due to thermal stresses using isochromatic fringe pattersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCOBEM 2005IOuro Preto, MGQUINAN, M.A.MATTAR NETO, M.INTERNATIONAL CONGRESS OF MECHANICAL ENGINEERING, 18thinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional do IPENinstname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)instacron:IPEN110472005MATTAR NETO, M.66-66Proceedings294570QUINAN, M.A.:2945:21:SMATTAR NETO, M.:70:21:NORIGINAL11047.pdfapplication/pdf1195834http://repositorio.ipen.br/bitstream/123456789/18334/1/11047.pdf0913b8501ff4a5273689028357d5c1a7MD51123456789/183342022-04-29 12:44:01.519oai:repositorio.ipen.br:123456789/18334Repositório InstitucionalPUBhttp://repositorio.ipen.br/oai/requestbibl@ipen.bropendoar:45102022-04-29T12:44:01Repositório Institucional do IPEN - Instituto de Pesquisas Energéticas e Nucleares (IPEN)false |
dc.title.pt_BR.fl_str_mv |
Determination of stress intensity factors due to thermal stresses using isochromatic fringe patters |
title |
Determination of stress intensity factors due to thermal stresses using isochromatic fringe patters |
spellingShingle |
Determination of stress intensity factors due to thermal stresses using isochromatic fringe patters QUINAN, M.A. stress intensity factors thermal stresses photoelasticity |
title_short |
Determination of stress intensity factors due to thermal stresses using isochromatic fringe patters |
title_full |
Determination of stress intensity factors due to thermal stresses using isochromatic fringe patters |
title_fullStr |
Determination of stress intensity factors due to thermal stresses using isochromatic fringe patters |
title_full_unstemmed |
Determination of stress intensity factors due to thermal stresses using isochromatic fringe patters |
title_sort |
Determination of stress intensity factors due to thermal stresses using isochromatic fringe patters |
author |
QUINAN, M.A. |
author_facet |
QUINAN, M.A. MATTAR NETO, M. INTERNATIONAL CONGRESS OF MECHANICAL ENGINEERING, 18th |
author_role |
author |
author2 |
MATTAR NETO, M. INTERNATIONAL CONGRESS OF MECHANICAL ENGINEERING, 18th |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
QUINAN, M.A. MATTAR NETO, M. INTERNATIONAL CONGRESS OF MECHANICAL ENGINEERING, 18th |
dc.subject.por.fl_str_mv |
stress intensity factors thermal stresses photoelasticity |
topic |
stress intensity factors thermal stresses photoelasticity |
description |
Transmission photoelasticity was used to obtain an experimental solution for stress intensity factors, KI, due to thermal loads in photoelastic models. In a photoelastic plate, a slot to simulate a crack was introduced. Also, a tube to circulate a coolant was fixed in one of the edges of the plate. The photoelastic model was putted on a photoelastic oven and kept at 60 ??C. Then, methyl alcohol at -15 ??C circulated through the cooling tube. The thermal shock in the plate caused stress on it and, as a consequence, transient photoelastic fringe patterns appeared and were captured by an image acquisition system. For each captured photoelastic fringe pattern, the stress intensity factor KI was determined using a dedicated software, specially developed to do it, based on the Dally overdeterministic method. This results are compared with numerical analyses. Based on the obtained results, some conclusions and recommendations on the experimental techniques used were addressed. The paper present a alternative experimental methodology for evaluation of stress intensity factors due thermal loads. The construction of the models can be very simple, the used equipments can be of easy acquisition or manufacture. In this aspect, it should be noticed that in spite of the polariscope used in this work is quite sophisticated, it is necessary a rudimentary polariscope to conduct these type of experiments, just constituted of a light source and plane polarizers plates easily found. |
publishDate |
2014 |
dc.date.evento.pt_BR.fl_str_mv |
Nov. 6-11, 2005 |
dc.date.accessioned.fl_str_mv |
2014-11-17T18:45:51Z 2014-11-18T18:52:18Z 2015-04-02T02:27:03Z |
dc.date.available.fl_str_mv |
2014-11-17T18:45:51Z 2014-11-18T18:52:18Z 2015-04-02T02:27:03Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ipen.br/handle/123456789/18334 |
url |
http://repositorio.ipen.br/handle/123456789/18334 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.coverage.pt_BR.fl_str_mv |
I |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional do IPEN instname:Instituto de Pesquisas Energéticas e Nucleares (IPEN) instacron:IPEN |
instname_str |
Instituto de Pesquisas Energéticas e Nucleares (IPEN) |
instacron_str |
IPEN |
institution |
IPEN |
reponame_str |
Repositório Institucional do IPEN |
collection |
Repositório Institucional do IPEN |
bitstream.url.fl_str_mv |
http://repositorio.ipen.br/bitstream/123456789/18334/1/11047.pdf |
bitstream.checksum.fl_str_mv |
0913b8501ff4a5273689028357d5c1a7 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 |
repository.name.fl_str_mv |
Repositório Institucional do IPEN - Instituto de Pesquisas Energéticas e Nucleares (IPEN) |
repository.mail.fl_str_mv |
bibl@ipen.br |
_version_ |
1767254220587663360 |