Online monitoring of cold metal transfer (CMT) process using infrared thermography
| Autor: | K. Renil Thomas, Prabhu Rajagopal, Sreedhar Unnikrishnakurup, P. V. Nithin, Krishnan Balasubramaniam, Markus Puschmann, G. Padmanabham, Frank Riedel, K. V. Phani Prabhakar |
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| Přispěvatelé: | Publica |
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
0209 industrial biotechnology Materials science Infrared Process (computing) chemistry.chemical_element 02 engineering and technology Welding 01 natural sciences law.invention Thermographic inspection 020901 industrial engineering & automation chemistry law Aluminium 0103 physical sciences Thermography Brazing Electrical and Electronic Engineering Composite material Metal transfer Instrumentation |
| Zdroj: | Quantitative InfraRed Thermography Journal. 14:68-78 |
| ISSN: | 2116-7176 1768-6733 |
| Popis: | Online (passive) thermographic inspection of overlap joints of aluminium and zinc coated steel sheets made by cold metal transfer weld brazing process was explored. Different experimental trials were conducted for demonstrating the feasibility of thermographic inspection to detect the porosities, improper weld bead and to differentiate the pre weld temperature. The whole process was monitored using infrared cameras in different wavelength region. Image analysis algorithms were developed to reconstruct the thermal images that contain the signatures of the weld defects and to extract the pre weld temperature and its evolution with distance from the centre of the weld torch. Post-weld radiography lends strong support to the observations. |
| Databáze: | OpenAIRE |
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