Cargando…

Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites

Ultrafast laser drilling has been proven to effectively reduce the heat-affected zone (HAZ) of carbon fiber-reinforced polymer (CFRP) composites. However, previous research mainly focused on the effects of picosecond laser parameters on CFRP drilling. Compared with a picosecond laser, a femtosecond...

Descripción completa

Detalles Bibliográficos
Autores principales: Jiang, Hao, Ma, Caiwen, Li, Ming, Cao, Zhiliang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8155999/
https://www.ncbi.nlm.nih.gov/pubmed/34065643
http://dx.doi.org/10.3390/molecules26102953
_version_ 1783699335091847168
author Jiang, Hao
Ma, Caiwen
Li, Ming
Cao, Zhiliang
author_facet Jiang, Hao
Ma, Caiwen
Li, Ming
Cao, Zhiliang
author_sort Jiang, Hao
collection PubMed
description Ultrafast laser drilling has been proven to effectively reduce the heat-affected zone (HAZ) of carbon fiber-reinforced polymer (CFRP) composites. However, previous research mainly focused on the effects of picosecond laser parameters on CFRP drilling. Compared with a picosecond laser, a femtosecond laser can achieve higher quality CFRP drilling due to its smaller pulse width, but there are few studies on the effects of femtosecond laser parameters on CFRP drilling. Moreover, the cross-sectional taper of CFRP produced by laser drilling is very large. This paper introduces the use of the femtosecond laser to drill cylindrical holes in CFRP. The effect of laser power, rotational speed of the laser, and number of spiral passes on HAZ and ablation depth in circular laser drilling and spiral laser drilling mode was studied, respectively. It also analyzed the forming process of the drilling depth in the spiral drilling mode and studied the influence of laser energy and drilling feed depth on the holes’ diameters and the taper. The experimental results show that the cylindrical hole of CFRP with a depth-to-diameter ratio of about 3:1 (taper < 0.32°, HAZ < 10 μm) was obtained by using femtosecond laser and a spiral drilling apparatus.
format Online
Article
Text
id pubmed-8155999
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-81559992021-05-28 Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites Jiang, Hao Ma, Caiwen Li, Ming Cao, Zhiliang Molecules Article Ultrafast laser drilling has been proven to effectively reduce the heat-affected zone (HAZ) of carbon fiber-reinforced polymer (CFRP) composites. However, previous research mainly focused on the effects of picosecond laser parameters on CFRP drilling. Compared with a picosecond laser, a femtosecond laser can achieve higher quality CFRP drilling due to its smaller pulse width, but there are few studies on the effects of femtosecond laser parameters on CFRP drilling. Moreover, the cross-sectional taper of CFRP produced by laser drilling is very large. This paper introduces the use of the femtosecond laser to drill cylindrical holes in CFRP. The effect of laser power, rotational speed of the laser, and number of spiral passes on HAZ and ablation depth in circular laser drilling and spiral laser drilling mode was studied, respectively. It also analyzed the forming process of the drilling depth in the spiral drilling mode and studied the influence of laser energy and drilling feed depth on the holes’ diameters and the taper. The experimental results show that the cylindrical hole of CFRP with a depth-to-diameter ratio of about 3:1 (taper < 0.32°, HAZ < 10 μm) was obtained by using femtosecond laser and a spiral drilling apparatus. MDPI 2021-05-16 /pmc/articles/PMC8155999/ /pubmed/34065643 http://dx.doi.org/10.3390/molecules26102953 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jiang, Hao
Ma, Caiwen
Li, Ming
Cao, Zhiliang
Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites
title Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites
title_full Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites
title_fullStr Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites
title_full_unstemmed Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites
title_short Femtosecond Laser Drilling of Cylindrical Holes for Carbon Fiber-Reinforced Polymer (CFRP) Composites
title_sort femtosecond laser drilling of cylindrical holes for carbon fiber-reinforced polymer (cfrp) composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8155999/
https://www.ncbi.nlm.nih.gov/pubmed/34065643
http://dx.doi.org/10.3390/molecules26102953
work_keys_str_mv AT jianghao femtosecondlaserdrillingofcylindricalholesforcarbonfiberreinforcedpolymercfrpcomposites
AT macaiwen femtosecondlaserdrillingofcylindricalholesforcarbonfiberreinforcedpolymercfrpcomposites
AT liming femtosecondlaserdrillingofcylindricalholesforcarbonfiberreinforcedpolymercfrpcomposites
AT caozhiliang femtosecondlaserdrillingofcylindricalholesforcarbonfiberreinforcedpolymercfrpcomposites