Evaluating the freeze–thaw phenomenon in sandwich-structured composites via numerical simulations and infrared thermography; Journal of Thermal Analysis and Calorimetry; Vol. 84, iss. 1
| Parent link: | Journal of Thermal Analysis and Calorimetry Vol. 84, iss. 1.— 2020.— [P. 1-19] |
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| Autor Corporativo: | |
| Outros autores: | , , , , |
| Summary: | Title screen The water ingress phenomenon in sandwich-structured composites used in the aerospace/aeronautical sector is a current issue. This type of defect can cause in the course of time several other defects at the boundary, such as corrosions, deformations, detachments. In fact, water may change its state of physical matter going towards the freeze–thaw cycle caused by the atmosphere re-entry of, e.g. space probes. In this work, the alveoli of a composite laminate have been filled with water, which was initially transformed into ice. By taking into account, the known quantity of water, the freeze–thaw cycle was simulated by Comsol Multiphysics® software, reproducing exactly the shape of the sandwich as well as the real conditions in which it was subsequently subjected in a climatic chamber. The experimental part consisted of monitoring the front side of the specimen by means of a thermal camera operating into the long-wave infrared spectrum, and by setting both the temperature and the relative humidity of the test chamber according to the values imposed during the numerical simulation step. It was found that the numerical and experimental temperature trends are in good agreement with each other since the model was built by following a physico-chemical point-of-view. It was also seen that the application of the independent component thermography (ICT) technique was able both to retrieve the positions of the defects (i.e. the water inclusions) and to characterize the defects in which a detachment (fabricated between the fibres and the resin) is present; the latter was realized above an inclusion caused by the water ingress. To the best of our knowledge, this is the first time that ICT is applied to satisfy this purpose. Режим доступа: по договору с организацией-держателем ресурса |
| Idioma: | inglés |
| Publicado: |
2020
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| Subjects: | |
| Acceso en liña: | https://doi.org/10.1007/s10973-020-09985-1 |
| Formato: | Electrónico Capítulo de libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663048 |
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| 200 | 1 | |a Evaluating the freeze–thaw phenomenon in sandwich-structured composites via numerical simulations and infrared thermography |f S. Sfarra, B. Tejedor, S. Perilli [et. al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 57 tit.] | ||
| 330 | |a The water ingress phenomenon in sandwich-structured composites used in the aerospace/aeronautical sector is a current issue. This type of defect can cause in the course of time several other defects at the boundary, such as corrosions, deformations, detachments. In fact, water may change its state of physical matter going towards the freeze–thaw cycle caused by the atmosphere re-entry of, e.g. space probes. In this work, the alveoli of a composite laminate have been filled with water, which was initially transformed into ice. By taking into account, the known quantity of water, the freeze–thaw cycle was simulated by Comsol Multiphysics® software, reproducing exactly the shape of the sandwich as well as the real conditions in which it was subsequently subjected in a climatic chamber. The experimental part consisted of monitoring the front side of the specimen by means of a thermal camera operating into the long-wave infrared spectrum, and by setting both the temperature and the relative humidity of the test chamber according to the values imposed during the numerical simulation step. It was found that the numerical and experimental temperature trends are in good agreement with each other since the model was built by following a physico-chemical point-of-view. It was also seen that the application of the independent component thermography (ICT) technique was able both to retrieve the positions of the defects (i.e. the water inclusions) and to characterize the defects in which a detachment (fabricated between the fibres and the resin) is present; the latter was realized above an inclusion caused by the water ingress. To the best of our knowledge, this is the first time that ICT is applied to satisfy this purpose. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Journal of Thermal Analysis and Calorimetry | ||
| 463 | |t Vol. 84, iss. 1 |v [P. 1-19] |d 2020 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a infrared thermography | |
| 610 | 1 | |a heat transfer | |
| 610 | 1 | |a climatic chamber | |
| 610 | 1 | |a composite materials | |
| 610 | 1 | |a image processing | |
| 610 | 1 | |a numerical simulation | |
| 610 | 1 | |a freeze–thaw phenomenon | |
| 610 | 1 | |a water ingress | |
| 610 | 1 | |a климатическая камера | |
| 610 | 1 | |a теплопередача | |
| 610 | 1 | |a композитные материалы | |
| 610 | 1 | |a обработка изображения | |
| 610 | 1 | |a численное моделирование | |
| 610 | 1 | |a замораживание | |
| 610 | 1 | |a оттаивание | |
| 701 | 1 | |a Sfarra |b S. |c specialist in the field of non-destructive testing |c Researcher of Tomsk Polytechnic University |f 1979- |g Stefano |3 (RuTPU)RU\TPU\pers\38660 |9 20837 | |
| 701 | 1 | |a Tejedor |b B. |g Blanca | |
| 701 | 1 | |a Perilli |b S. |g Stefano | |
| 701 | 1 | |a Almeida Ricardo M.S.F |b M.S.F | |
| 701 | 1 | |a Barreira |b E. |g Eva | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа неразрушающего контроля и безопасности |b Центр промышленной томографии |b Научно-производственная лаборатория "Тепловой контроль" |3 (RuTPU)RU\TPU\col\23838 |
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