Detection of irregularities on weld bead from the L-Statistic analysis of the acquired sound during pulse mode laser welding process
Since several past decades, many studies prove that the statistical or signal features extracted from the sound acquired from laser welding process was significantly giving information on the weld condition. However, a considerable amount of studies were only emphasizing on the use of common statist...
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| Format: | Conference or Workshop Item |
| Language: | English |
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Institute of Physics Publishing
2020
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| Online Access: | http://umpir.ump.edu.my/id/eprint/36017/1/Detection%20of%20irregularities%20on%20weld%20bead%20from%20the%20L-Statistic%20analysis%20of%20the%20acquired%20sound%20during%20pulse%20mode%20laser%20welding%20process.pdf |
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| author | Mohd Fadhlan, Mohd Yusof Mahadzir, Ishak Mohd Fairusham, Ghazali |
| author_facet | Mohd Fadhlan, Mohd Yusof Mahadzir, Ishak Mohd Fairusham, Ghazali |
| author_sort | Mohd Fadhlan, Mohd Yusof |
| collection | UMP |
| description | Since several past decades, many studies prove that the statistical or signal features extracted from the sound acquired from laser welding process was significantly giving information on the weld condition. However, a considerable amount of studies were only emphasizing on the use of common statistical features in which it is restricted to some limitation when dealing with non-stationary random sound signal. In this particular work, the main aim was set to detect the irregularities along the weld bead by way of implementing the L-Statistic analysis on the acquired sound during pulse mode laser welding process. To achieve the goal, pulse mode laser welding have been done onto 22MnB5 boron steel plate in butt joined configuration. During the process, sound signal was acquired using microphone and further analyzed by extracting L-statistic features from it. According to the findings, among all the L-statistic features analyze in this study, L-Cv (scale) was found giving a significant indicator of the weld bead surface condition. Larger value of L-Cv was recorded at the point where the large underfill occurred. On the other hand, it was also found that the L-kurtosis values could give remarkable information on the existence of the irregularities on bead width and depth. Hence, it could be drawn into conclusion that the irregularities on the weld bead during the pulse mode laser welding could be detected from the appropriate L-statistic features of the acquired sound signal. The finding in this work was believed to be essential in enhancing the capability of acoustic sound method to be developed as online monitoring system for pulse mode laser welding process. |
| first_indexed | 2024-03-06T13:02:28Z |
| format | Conference or Workshop Item |
| id | UMPir36017 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T13:02:28Z |
| publishDate | 2020 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | UMPir360172023-03-17T06:58:04Z http://umpir.ump.edu.my/id/eprint/36017/ Detection of irregularities on weld bead from the L-Statistic analysis of the acquired sound during pulse mode laser welding process Mohd Fadhlan, Mohd Yusof Mahadzir, Ishak Mohd Fairusham, Ghazali T Technology (General) TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics Since several past decades, many studies prove that the statistical or signal features extracted from the sound acquired from laser welding process was significantly giving information on the weld condition. However, a considerable amount of studies were only emphasizing on the use of common statistical features in which it is restricted to some limitation when dealing with non-stationary random sound signal. In this particular work, the main aim was set to detect the irregularities along the weld bead by way of implementing the L-Statistic analysis on the acquired sound during pulse mode laser welding process. To achieve the goal, pulse mode laser welding have been done onto 22MnB5 boron steel plate in butt joined configuration. During the process, sound signal was acquired using microphone and further analyzed by extracting L-statistic features from it. According to the findings, among all the L-statistic features analyze in this study, L-Cv (scale) was found giving a significant indicator of the weld bead surface condition. Larger value of L-Cv was recorded at the point where the large underfill occurred. On the other hand, it was also found that the L-kurtosis values could give remarkable information on the existence of the irregularities on bead width and depth. Hence, it could be drawn into conclusion that the irregularities on the weld bead during the pulse mode laser welding could be detected from the appropriate L-statistic features of the acquired sound signal. The finding in this work was believed to be essential in enhancing the capability of acoustic sound method to be developed as online monitoring system for pulse mode laser welding process. Institute of Physics Publishing 2020-06-05 Conference or Workshop Item PeerReviewed pdf en cc_by http://umpir.ump.edu.my/id/eprint/36017/1/Detection%20of%20irregularities%20on%20weld%20bead%20from%20the%20L-Statistic%20analysis%20of%20the%20acquired%20sound%20during%20pulse%20mode%20laser%20welding%20process.pdf Mohd Fadhlan, Mohd Yusof and Mahadzir, Ishak and Mohd Fairusham, Ghazali (2020) Detection of irregularities on weld bead from the L-Statistic analysis of the acquired sound during pulse mode laser welding process. In: IOP Conference Series: Materials Science and Engineering; 5th International Conference on Mechanical Engineering Research 2019, ICMER 2019 , 30-31 July 2019 , Kuantan. pp. 1-9., 788 (012015). ISSN 1757-8981 (Published) https://doi.org/10.1088/1757-899X/788/1/012015 |
| spellingShingle | T Technology (General) TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics Mohd Fadhlan, Mohd Yusof Mahadzir, Ishak Mohd Fairusham, Ghazali Detection of irregularities on weld bead from the L-Statistic analysis of the acquired sound during pulse mode laser welding process |
| title | Detection of irregularities on weld bead from the L-Statistic analysis of the acquired sound during pulse mode laser welding process |
| title_full | Detection of irregularities on weld bead from the L-Statistic analysis of the acquired sound during pulse mode laser welding process |
| title_fullStr | Detection of irregularities on weld bead from the L-Statistic analysis of the acquired sound during pulse mode laser welding process |
| title_full_unstemmed | Detection of irregularities on weld bead from the L-Statistic analysis of the acquired sound during pulse mode laser welding process |
| title_short | Detection of irregularities on weld bead from the L-Statistic analysis of the acquired sound during pulse mode laser welding process |
| title_sort | detection of irregularities on weld bead from the l statistic analysis of the acquired sound during pulse mode laser welding process |
| topic | T Technology (General) TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics |
| url | http://umpir.ump.edu.my/id/eprint/36017/1/Detection%20of%20irregularities%20on%20weld%20bead%20from%20the%20L-Statistic%20analysis%20of%20the%20acquired%20sound%20during%20pulse%20mode%20laser%20welding%20process.pdf |
| work_keys_str_mv | AT mohdfadhlanmohdyusof detectionofirregularitiesonweldbeadfromthelstatisticanalysisoftheacquiredsoundduringpulsemodelaserweldingprocess AT mahadzirishak detectionofirregularitiesonweldbeadfromthelstatisticanalysisoftheacquiredsoundduringpulsemodelaserweldingprocess AT mohdfairushamghazali detectionofirregularitiesonweldbeadfromthelstatisticanalysisoftheacquiredsoundduringpulsemodelaserweldingprocess |