Adaptive resistance spot welding method that reduces the shunting effect
A reference-based adaptive resistance spot welding (RSW) method intended to reduce the shunting effect in short-pitch (≤40 mm) RSW is proposed in this study. As the weld pitch decreases, the nugget diameter and dynamic resistance level concurrently decrease by an amount equivalent to the increased s...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Published: |
Elsevier Ltd.
2018
|
| Subjects: |
| _version_ | 1796864046265270272 |
|---|---|
| author | Yu, Jiyoung Mohd. Faridh, Mohd. Faridh Park, Young Whan |
| author_facet | Yu, Jiyoung Mohd. Faridh, Mohd. Faridh Park, Young Whan |
| author_sort | Yu, Jiyoung |
| collection | ePrints |
| description | A reference-based adaptive resistance spot welding (RSW) method intended to reduce the shunting effect in short-pitch (≤40 mm) RSW is proposed in this study. As the weld pitch decreases, the nugget diameter and dynamic resistance level concurrently decrease by an amount equivalent to the increased shunting effect. Based on this fundamental relationship, an exponential model capable of predicting weld pitch as a function of dynamic resistance was estimated. Next, the relationship between the nugget diameter and the heat input as a function of weld pitch was investigated, and a logistic growth model capable of predicting heat input compensation was established. These exponential and logistic growth models form the basis of the proposed RSW method's control algorithm. The proposed RSW method compensates for the heat input loss caused by the shunting effect by adjusting welding time in real time under a constant current control until the predicted heat input compensation is obtained. Experimental results indicated that the RSW method proposed in this study concurrently increased the nugget diameter and decreased the shunting effect in short-pitch RSW compared with conventional welding method results. This finding suggests that the proposed reference-based adaptive RSW method is effective in reducing the shunting effect in short-pitch RSW. |
| first_indexed | 2024-03-05T20:35:57Z |
| format | Article |
| id | utm.eprints-85450 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:35:57Z |
| publishDate | 2018 |
| publisher | Elsevier Ltd. |
| record_format | dspace |
| spelling | utm.eprints-854502020-06-30T08:45:31Z http://eprints.utm.my/85450/ Adaptive resistance spot welding method that reduces the shunting effect Yu, Jiyoung Mohd. Faridh, Mohd. Faridh Park, Young Whan TJ Mechanical engineering and machinery A reference-based adaptive resistance spot welding (RSW) method intended to reduce the shunting effect in short-pitch (≤40 mm) RSW is proposed in this study. As the weld pitch decreases, the nugget diameter and dynamic resistance level concurrently decrease by an amount equivalent to the increased shunting effect. Based on this fundamental relationship, an exponential model capable of predicting weld pitch as a function of dynamic resistance was estimated. Next, the relationship between the nugget diameter and the heat input as a function of weld pitch was investigated, and a logistic growth model capable of predicting heat input compensation was established. These exponential and logistic growth models form the basis of the proposed RSW method's control algorithm. The proposed RSW method compensates for the heat input loss caused by the shunting effect by adjusting welding time in real time under a constant current control until the predicted heat input compensation is obtained. Experimental results indicated that the RSW method proposed in this study concurrently increased the nugget diameter and decreased the shunting effect in short-pitch RSW compared with conventional welding method results. This finding suggests that the proposed reference-based adaptive RSW method is effective in reducing the shunting effect in short-pitch RSW. Elsevier Ltd. 2018-10 Article PeerReviewed Yu, Jiyoung and Mohd. Faridh, Mohd. Faridh and Park, Young Whan (2018) Adaptive resistance spot welding method that reduces the shunting effect. Journal of Manufacturing Processes, 35 . pp. 604-613. ISSN 1526-6125 http://dx.doi.org/10.1016/j.jmapro.2018.09.002 DOI:10.1016/j.jmapro.2018.09.002 |
| spellingShingle | TJ Mechanical engineering and machinery Yu, Jiyoung Mohd. Faridh, Mohd. Faridh Park, Young Whan Adaptive resistance spot welding method that reduces the shunting effect |
| title | Adaptive resistance spot welding method that reduces the shunting effect |
| title_full | Adaptive resistance spot welding method that reduces the shunting effect |
| title_fullStr | Adaptive resistance spot welding method that reduces the shunting effect |
| title_full_unstemmed | Adaptive resistance spot welding method that reduces the shunting effect |
| title_short | Adaptive resistance spot welding method that reduces the shunting effect |
| title_sort | adaptive resistance spot welding method that reduces the shunting effect |
| topic | TJ Mechanical engineering and machinery |
| work_keys_str_mv | AT yujiyoung adaptiveresistancespotweldingmethodthatreducestheshuntingeffect AT mohdfaridhmohdfaridh adaptiveresistancespotweldingmethodthatreducestheshuntingeffect AT parkyoungwhan adaptiveresistancespotweldingmethodthatreducestheshuntingeffect |