Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves
The femtosecond (fs) laser ablation of metals is a precise method used to create microfeatures on the surface of the material with a minimized heat-affected zone (HAZ). Despite its many advantages, fs laser ablation often requires extensive trial-and-error experimentation before finding the optimal...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/3/593 |
| _version_ | 1797610063423078400 |
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| author | Pol Vanwersch Balasubramanian Nagarajan Albert Van Bael Sylvie Castagne |
| author_facet | Pol Vanwersch Balasubramanian Nagarajan Albert Van Bael Sylvie Castagne |
| author_sort | Pol Vanwersch |
| collection | DOAJ |
| description | The femtosecond (fs) laser ablation of metals is a precise method used to create microfeatures on the surface of the material with a minimized heat-affected zone (HAZ). Despite its many advantages, fs laser ablation often requires extensive trial-and-error experimentation before finding the optimal laser strategy for a desired geometry with minimal HAZ. The pulse-based two-temperature model (TTM) can significantly shorten this process by predicting the ablated geometry based on a set of material and laser parameters. However, this model has only been validated for percussion drilling and single lines. In this study, the pulse-based TTM is tested against parallel line experiments and subsequently modified to include geometry-dependent material parameters. More specifically, the threshold fluence and reflectivity of the material are modified to incorporate the temperature increase inside the standing features between parallel lines. The introduced geometry-dependent factors are fitted with experimental data and their inclusion in the model is shown to have a positive impact on the simulation results. The results show a clear amelioration in the shape and depth of the simulated profiles, with the error on the average depth and width of the modified TTM being lower than the average standard deviation on the experiments. |
| first_indexed | 2024-03-11T06:10:11Z |
| format | Article |
| id | doaj.art-60137d94e2994e0d9707cc95521ef873 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-11T06:10:11Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-60137d94e2994e0d9707cc95521ef8732023-11-17T12:42:59ZengMDPI AGMicromachines2072-666X2023-03-0114359310.3390/mi14030593Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with GroovesPol Vanwersch0Balasubramanian Nagarajan1Albert Van Bael2Sylvie Castagne3KU Leuven, Department of Mechanical Engineering and Flanders Make@KU Leuven - M&A, Celestijnenlaan 300, B-3001 Leuven, BelgiumKU Leuven, Department of Mechanical Engineering and Flanders Make@KU Leuven - M&A, Celestijnenlaan 300, B-3001 Leuven, BelgiumKU Leuven, Department of Materials Engineering, Diepenbeek Campus, Wetenschapspark 27, B-3590 Diepenbeek, BelgiumKU Leuven, Department of Mechanical Engineering and Flanders Make@KU Leuven - M&A, Celestijnenlaan 300, B-3001 Leuven, BelgiumThe femtosecond (fs) laser ablation of metals is a precise method used to create microfeatures on the surface of the material with a minimized heat-affected zone (HAZ). Despite its many advantages, fs laser ablation often requires extensive trial-and-error experimentation before finding the optimal laser strategy for a desired geometry with minimal HAZ. The pulse-based two-temperature model (TTM) can significantly shorten this process by predicting the ablated geometry based on a set of material and laser parameters. However, this model has only been validated for percussion drilling and single lines. In this study, the pulse-based TTM is tested against parallel line experiments and subsequently modified to include geometry-dependent material parameters. More specifically, the threshold fluence and reflectivity of the material are modified to incorporate the temperature increase inside the standing features between parallel lines. The introduced geometry-dependent factors are fitted with experimental data and their inclusion in the model is shown to have a positive impact on the simulation results. The results show a clear amelioration in the shape and depth of the simulated profiles, with the error on the average depth and width of the modified TTM being lower than the average standard deviation on the experiments.https://www.mdpi.com/2072-666X/14/3/593femtosecond laser modellingultrafast laser ablationstainless steel |
| spellingShingle | Pol Vanwersch Balasubramanian Nagarajan Albert Van Bael Sylvie Castagne Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves Micromachines femtosecond laser modelling ultrafast laser ablation stainless steel |
| title | Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves |
| title_full | Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves |
| title_fullStr | Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves |
| title_full_unstemmed | Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves |
| title_short | Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves |
| title_sort | three dimensional pulse based modelling of femtosecond laser ablation of metals validation with grooves |
| topic | femtosecond laser modelling ultrafast laser ablation stainless steel |
| url | https://www.mdpi.com/2072-666X/14/3/593 |
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