Detecting water in aviation honeycomb structures by using transient infrared thermographic NDT; Thermosense XXV, Orlando, April 21, 2003
| Parent link: | Thermosense XXV, Orlando, April 21, 2003.— 2003.— [P. 345-355] |
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| Outros autores: | , , , |
| Summary: | Title screen A lot of structural key elements of many modern civilian and military airplanes, such as flaps, keel, etc., are made of honeycomb structures. Honeycombs involve a combination of some materials including aluminum, Nomex, glass and graphite epoxy composites. During exploitation, atmosphere water could penetrate these structures due to possible imperfections in various junctions, and, thus, deteriorate airplane durability. In Russia, water in honeycombs is typically detected by using the X ray and ultrasonic technique. However, the X ray equipment is hardly accepted by commercial airlines because of the safety reason, and the point-by-point ultrasonic inspection is low-productive. Since 2002, we develop the IR thermographic method of detecting water by thermally stimulating aviation panels under test. Unlike the technique accepted by Airbus Industry, Inc., that uses 'a warm blanket', we use a powerful optical heater assembled with an IR camera into a single set. The first stage of research included modeling the detection process and optimizing the experimental procedure. As a result, we have demonstrated that, due to the high heat capacity of water, a temperature signal over moist areas evolves in time during a relatively long period that relaxes the requirements to the test protocol. Thus, even aluminum panels can be thermally stimulated during few seconds with a delay time being also in a few second range. A similar protocol can be applied to the inspection of composite honeycombs where the image quality resembles that obtained by X rays. The paper will describe all stages of the research starting from modeling and finishing with the preliminary experimental results obtained in situ on civilian airplanes Режим доступа: по договору с организацией-держателем ресурса |
| Idioma: | inglés |
| Publicado: |
2003
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| Subjects: | |
| Acceso en liña: | http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=762844 |
| Formato: | xMaterials Electrónico Capítulo de libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=637182 |
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| 200 | 1 | |a Detecting water in aviation honeycomb structures by using transient infrared thermographic NDT |f V. P. Vavilov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [Ref.: p. 354 (2 tit.)] | ||
| 330 | |a A lot of structural key elements of many modern civilian and military airplanes, such as flaps, keel, etc., are made of honeycomb structures. Honeycombs involve a combination of some materials including aluminum, Nomex, glass and graphite epoxy composites. During exploitation, atmosphere water could penetrate these structures due to possible imperfections in various junctions, and, thus, deteriorate airplane durability. In Russia, water in honeycombs is typically detected by using the X ray and ultrasonic technique. However, the X ray equipment is hardly accepted by commercial airlines because of the safety reason, and the point-by-point ultrasonic inspection is low-productive. Since 2002, we develop the IR thermographic method of detecting water by thermally stimulating aviation panels under test. Unlike the technique accepted by Airbus Industry, Inc., that uses 'a warm blanket', we use a powerful optical heater assembled with an IR camera into a single set. The first stage of research included modeling the detection process and optimizing the experimental procedure. As a result, we have demonstrated that, due to the high heat capacity of water, a temperature signal over moist areas evolves in time during a relatively long period that relaxes the requirements to the test protocol. Thus, even aluminum panels can be thermally stimulated during few seconds with a delay time being also in a few second range. A similar protocol can be applied to the inspection of composite honeycombs where the image quality resembles that obtained by X rays. The paper will describe all stages of the research starting from modeling and finishing with the preliminary experimental results obtained in situ on civilian airplanes | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 463 | 1 | |t Thermosense XXV, Orlando, April 21, 2003 |o Proc. SPIE 5073 |v [P. 345-355] |d 2003 | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a thermography | |
| 701 | 1 | |a Vavilov |b V. P. |c Specialist in the field of dosimetry and methodology of nondestructive testing (NDT) |c Doctor of technical sciences (DSc), Professor of Tomsk Polytechnic University (TPU) |f 1949- |g Vladimir Platonovich |3 (RuTPU)RU\TPU\pers\32161 |9 16163 | |
| 701 | 1 | |a Klimov |b A. G. |g Alexey | |
| 701 | 1 | |a Nesteruk |b D. A. |c specialist in the field of descriptive geometry |c Associate Professor of Tomsk Polytechnic University, Candidate of technical sciences |f 1979- |g Denis Alekseevich |3 (RuTPU)RU\TPU\pers\31502 |9 15663 | |
| 701 | 1 | |a Shiryaev |b V. V. |c specialist in the field of non-destructive testing |c Senior researcher of Tomsk Polytechnic University, Candidate of technical sciences |f 1948- |g Vladimir Vasilyevich |3 (RuTPU)RU\TPU\pers\32219 |9 16219 | |
| 801 | 2 | |a RU |b 63413507 |c 20170314 |g RCR | |
| 856 | 4 | |u http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=762844 | |
| 942 | |c CF | ||