Enhancement of Imperfection Detection Capabilities in TIG Welding of the Infrared Monitoring System
For a low cost, there are industrial infrared monitoring systems used for imperfection detection and identification in welded joints. The key drawback that impedes real life industrial applications is the low spatial resolution, as well as the temporal resolution of low-cost infrared (IR) cameras. T...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/10/1624 |
| _version_ | 1797513799088996352 |
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| author | Jacek Górka Wojciech Jamrozik |
| author_facet | Jacek Górka Wojciech Jamrozik |
| author_sort | Jacek Górka |
| collection | DOAJ |
| description | For a low cost, there are industrial infrared monitoring systems used for imperfection detection and identification in welded joints. The key drawback that impedes real life industrial applications is the low spatial resolution, as well as the temporal resolution of low-cost infrared (IR) cameras. This is also the case in tungsten inert gas (TIG) welding. Taking into consideration the influence of voltage on the arc energy and heat input, high frequency sampled voltage was used to evaluate the interpolated temporal resolution of IR sequences. Additionally, a reflected temperature correction method was proposed to reduce the uncertainty of absolute temperature measurement with a thermographic camera. The proposed method was applied to detect several imperfection types, such as lack of or incomplete penetration as well as incorrect weld shape and size (including burnouts). Results obtained for different interpolation factors were compared. The obtained results emphasize the validity of reflected temperature correction method. For the weld defects detection task, the smallest detectable defect was found for various interpolation factors. Moreover, the correspondence of arc voltage and the joint temperature was checked. Additionally, a set of decision rules was elaborated on and applied to distinguish between various joint conditions. It was found that defects that do not have symmetrical temperature distribution with respect to the joint axis are harder to identify. |
| first_indexed | 2024-03-10T06:22:38Z |
| format | Article |
| id | doaj.art-00c342fa928742419a762fe5569c7412 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T06:22:38Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-00c342fa928742419a762fe5569c74122023-11-22T19:09:40ZengMDPI AGMetals2075-47012021-10-011110162410.3390/met11101624Enhancement of Imperfection Detection Capabilities in TIG Welding of the Infrared Monitoring SystemJacek Górka0Wojciech Jamrozik1Department of Welding Engineering, Silesian University of Technology, Konarskiego Str. 18a, 44-100 Gliwice, PolandDepartment of Fundamentals of Machinery Design, Silesian University of Technology, Konarskiego Str. 18a, 44-100 Gliwice, PolandFor a low cost, there are industrial infrared monitoring systems used for imperfection detection and identification in welded joints. The key drawback that impedes real life industrial applications is the low spatial resolution, as well as the temporal resolution of low-cost infrared (IR) cameras. This is also the case in tungsten inert gas (TIG) welding. Taking into consideration the influence of voltage on the arc energy and heat input, high frequency sampled voltage was used to evaluate the interpolated temporal resolution of IR sequences. Additionally, a reflected temperature correction method was proposed to reduce the uncertainty of absolute temperature measurement with a thermographic camera. The proposed method was applied to detect several imperfection types, such as lack of or incomplete penetration as well as incorrect weld shape and size (including burnouts). Results obtained for different interpolation factors were compared. The obtained results emphasize the validity of reflected temperature correction method. For the weld defects detection task, the smallest detectable defect was found for various interpolation factors. Moreover, the correspondence of arc voltage and the joint temperature was checked. Additionally, a set of decision rules was elaborated on and applied to distinguish between various joint conditions. It was found that defects that do not have symmetrical temperature distribution with respect to the joint axis are harder to identify.https://www.mdpi.com/2075-4701/11/10/1624TIG weldingInconel superalloysthermographyemissivityreflected temperaturetemporal interpolation |
| spellingShingle | Jacek Górka Wojciech Jamrozik Enhancement of Imperfection Detection Capabilities in TIG Welding of the Infrared Monitoring System Metals TIG welding Inconel superalloys thermography emissivity reflected temperature temporal interpolation |
| title | Enhancement of Imperfection Detection Capabilities in TIG Welding of the Infrared Monitoring System |
| title_full | Enhancement of Imperfection Detection Capabilities in TIG Welding of the Infrared Monitoring System |
| title_fullStr | Enhancement of Imperfection Detection Capabilities in TIG Welding of the Infrared Monitoring System |
| title_full_unstemmed | Enhancement of Imperfection Detection Capabilities in TIG Welding of the Infrared Monitoring System |
| title_short | Enhancement of Imperfection Detection Capabilities in TIG Welding of the Infrared Monitoring System |
| title_sort | enhancement of imperfection detection capabilities in tig welding of the infrared monitoring system |
| topic | TIG welding Inconel superalloys thermography emissivity reflected temperature temporal interpolation |
| url | https://www.mdpi.com/2075-4701/11/10/1624 |
| work_keys_str_mv | AT jacekgorka enhancementofimperfectiondetectioncapabilitiesintigweldingoftheinfraredmonitoringsystem AT wojciechjamrozik enhancementofimperfectiondetectioncapabilitiesintigweldingoftheinfraredmonitoringsystem |