Assessment of Nugget Size of Spot Weld using Neutron Radiography
Resistance spot welding (RSW) has been widely used for many years in the fabrication of car body structures, mainly due to the cost and time considerations. The weld quality as well as the nugget size is an issue in various manufacturing and processes due to the strong link between the weld quality...
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| Format: | Article |
| Language: | English |
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Center for Development of Nuclear Informatics, National Nuclear Energy Agency (BATAN)
2011-08-01
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| Series: | Atom Indonesia |
| Subjects: | |
| Online Access: | http://aij.batan.go.id/index.php/aij/article/view/65 |
| _version_ | 1831749021436215296 |
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| author | Triyono Jamasri M.N. Ilman R. Soekrisno Sutiarso |
| author_facet | Triyono Jamasri M.N. Ilman R. Soekrisno Sutiarso |
| author_sort | Triyono |
| collection | DOAJ |
| description | Resistance spot welding (RSW) has been widely used for many years in the fabrication of car body structures, mainly due to the cost and time considerations. The weld quality as well as the nugget size is an issue in various manufacturing and processes due to the strong link between the weld quality and safety. It has led to the development of various destructive and non-destructive tests for spot welding such as peel testing, ultrasonic inspections, digital shearography, and infrared thermography. However, such methods cannot show spot weld nugget visually and the results are very operator’s skill dependent. The present work proposes a method to visualize the nugget size of spot welds using neutron radiography. Water, oil and various concentrations of gadolinium oxide-alcohol mixture were evaluated as a contrast media to obtain the best quality of radiography. Results show that mixture of 5 g gadolinium oxide (Gd2O3) in 25 ml alcohol produces the best contrast. It provides the possibility to visualize the shape and size of the nugget spot weld. Furthermore, it can discriminate between nugget and corona bond. The result of neutron radiography evaluation shows reasonable agreement with that of destructive test. |
| first_indexed | 2024-12-21T22:02:17Z |
| format | Article |
| id | doaj.art-1afa8a3bafce40f69636704d66e2ce21 |
| institution | Directory Open Access Journal |
| issn | 0126-1568 |
| language | English |
| last_indexed | 2024-12-21T22:02:17Z |
| publishDate | 2011-08-01 |
| publisher | Center for Development of Nuclear Informatics, National Nuclear Energy Agency (BATAN) |
| record_format | Article |
| series | Atom Indonesia |
| spelling | doaj.art-1afa8a3bafce40f69636704d66e2ce212022-12-21T18:48:47ZengCenter for Development of Nuclear Informatics, National Nuclear Energy Agency (BATAN)Atom Indonesia0126-15682011-08-013727175Assessment of Nugget Size of Spot Weld using Neutron RadiographyTriyono0Jamasri1M.N. Ilman2R. Soekrisno 3 Sutiarso4Department of Mechanical and Industrial Engineering, Gadjah Mada University Jl. Grafika No. 2 Yogyakarta 55281, IndonesiaDepartment of Mechanical and Industrial Engineering, Gadjah Mada University Jl. Grafika No. 2 Yogyakarta 55281, IndonesiaDepartment of Mechanical and Industrial Engineering, Gadjah Mada University Jl. Grafika No. 2 Yogyakarta 55281, IndonesiaDepartment of Mechanical and Industrial Engineering, Gadjah Mada University Jl. Grafika No. 2 Yogyakarta 55281, IndonesiaCenter for Technology of Nuclear Industry Materials, National Nuclear Energy Agency Puspiptek Serpong, Tangerang 15314, IndonesiaResistance spot welding (RSW) has been widely used for many years in the fabrication of car body structures, mainly due to the cost and time considerations. The weld quality as well as the nugget size is an issue in various manufacturing and processes due to the strong link between the weld quality and safety. It has led to the development of various destructive and non-destructive tests for spot welding such as peel testing, ultrasonic inspections, digital shearography, and infrared thermography. However, such methods cannot show spot weld nugget visually and the results are very operator’s skill dependent. The present work proposes a method to visualize the nugget size of spot welds using neutron radiography. Water, oil and various concentrations of gadolinium oxide-alcohol mixture were evaluated as a contrast media to obtain the best quality of radiography. Results show that mixture of 5 g gadolinium oxide (Gd2O3) in 25 ml alcohol produces the best contrast. It provides the possibility to visualize the shape and size of the nugget spot weld. Furthermore, it can discriminate between nugget and corona bond. The result of neutron radiography evaluation shows reasonable agreement with that of destructive test.http://aij.batan.go.id/index.php/aij/article/view/65Corona bondGadolinium oxideNeutron radiographyNugget sizeSpot weld |
| spellingShingle | Triyono Jamasri M.N. Ilman R. Soekrisno Sutiarso Assessment of Nugget Size of Spot Weld using Neutron Radiography Atom Indonesia Corona bond Gadolinium oxide Neutron radiography Nugget size Spot weld |
| title | Assessment of Nugget Size of Spot Weld using Neutron Radiography |
| title_full | Assessment of Nugget Size of Spot Weld using Neutron Radiography |
| title_fullStr | Assessment of Nugget Size of Spot Weld using Neutron Radiography |
| title_full_unstemmed | Assessment of Nugget Size of Spot Weld using Neutron Radiography |
| title_short | Assessment of Nugget Size of Spot Weld using Neutron Radiography |
| title_sort | assessment of nugget size of spot weld using neutron radiography |
| topic | Corona bond Gadolinium oxide Neutron radiography Nugget size Spot weld |
| url | http://aij.batan.go.id/index.php/aij/article/view/65 |
| work_keys_str_mv | AT triyono assessmentofnuggetsizeofspotweldusingneutronradiography AT jamasri assessmentofnuggetsizeofspotweldusingneutronradiography AT mnilman assessmentofnuggetsizeofspotweldusingneutronradiography AT rsoekrisno assessmentofnuggetsizeofspotweldusingneutronradiography AT sutiarso assessmentofnuggetsizeofspotweldusingneutronradiography |