Noise-limited thermal/infrared nondestructive testing
| Parent link: | NDT & E International Vol. 61.— 2014.— [P. 16-23] |
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| Glavni autor: | |
| Sažetak: | Title screen In thermal/infrared nondestructive testing (T/I NDT), the presence of noise in the infrared signal is an inconvenience in the method. It is convenient to introduce two extreme types of T/I NDT noise: (1) this type is purely additive and is defined by background reflections and the IR detector and (2) this is purely multiplicative and is defined by the material's absorptivity/emissivity variations. Multiple T/I NDT tests performed on various materials have shown that none of materials reveal a ‘pure? additive or multiplicative type of noise. However, in the case of optical heating, many composite and black-painted materials exhibit multiplicative noise with a noise contrast of Cn=2?5%, and this determines the defect detection limits. The Cn concept has been applied to a graphite epoxy composite to demonstrate that the maximum depth of detected defects in a one-sided procedure is about 4 mm. Also, in 1–10 mm-thick black-painted steel, the minimum detectable material loss is from 3% to 9% Режим доступа: по договору с организацией-держателем ресурса |
| Jezik: | engleski |
| Izdano: |
2014
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| Teme: | |
| Online pristup: | http://www.sciencedirect.com/science/article/pii/S0963869513001187 |
| Format: | Elektronički Poglavlje knjige |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=637069 |
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| 200 | 1 | |a Noise-limited thermal/infrared nondestructive testing |f V. P. Vavilov | |
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| 300 | |a Title screen | ||
| 320 | |a [Ref: p. 23 (9 tit.)] | ||
| 330 | |a In thermal/infrared nondestructive testing (T/I NDT), the presence of noise in the infrared signal is an inconvenience in the method. It is convenient to introduce two extreme types of T/I NDT noise: (1) this type is purely additive and is defined by background reflections and the IR detector and (2) this is purely multiplicative and is defined by the material's absorptivity/emissivity variations. Multiple T/I NDT tests performed on various materials have shown that none of materials reveal a ‘pure? additive or multiplicative type of noise. However, in the case of optical heating, many composite and black-painted materials exhibit multiplicative noise with a noise contrast of Cn=2?5%, and this determines the defect detection limits. The Cn concept has been applied to a graphite epoxy composite to demonstrate that the maximum depth of detected defects in a one-sided procedure is about 4 mm. Also, in 1–10 mm-thick black-painted steel, the minimum detectable material loss is from 3% to 9% | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t NDT & E International | ||
| 463 | |t Vol. 61 |v [P. 16-23] |d 2014 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a defects | |
| 610 | 1 | |a дефекты | |
| 610 | 1 | |a infrared thermography | |
| 610 | 1 | |a инфракрасная термография | |
| 610 | 1 | |a теоретическое моделирование | |
| 610 | 1 | |a шумы | |
| 610 | 1 | |a noises | |
| 700 | 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 | |
| 801 | 2 | |a RU |b 63413507 |c 20140508 |g RCR | |
| 856 | 4 | |u http://www.sciencedirect.com/science/article/pii/S0963869513001187 | |
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