Purpose

The purpose of this study is to obtain strong materials with multiwall carbon nanotubes (MWCNTs) doped and investigate laser cut of MWCNTs also find the effect of the laser cutting parameters on composite materials.

Design/methodology/approach

The laminated composite plates were manufactured by using a vacuum infusion process. The mechanical properties of the composite materials produced were determined according to American Society for Testing and Materials (ASTM) D3039M, ASTM D3171, ASTM D 792 and ASTM D2583. A 130 Watts carbondioxide (CO₂) laser cutting machine was used for drilling the two different composite plates with a thickness of 1.6–1.5 mm. Three variables were considered as process parameters including laser power (in three levels of 84.50, 104.00 and 127.40 W), cutting speed (in three levels of 4, 6, 8 mm/s) and 14 mm fixed focal position.

Findings

The fibers could not be cut due to insufficient melting in the experiments performed using 84.50 and 104.00 W laser power but the cutting was successfully completed when the laser power was 127.40 W. However, as the cutting speed increased, the contact time of the laser beam with the material decreased, so the kerf decreased, but the increased laser power created a thermal effect, causing an increase in hardness around the cutting surface. This increase was lower in MWCNTs doped composites compared to pure composites. It has been found that the addition of nanoparticles to layered glass fiber composite materials played an effective role in the strength of the material and affected the CO₂ laser cutting quality.

Originality/value

This study is a unique study in which the CO₂ laser cutting method of MWCNT-doped composite materials was investigated and the machinability without cutting errors, such as delamination, splitting, distortion and burring using the most suitable laser cutting parameters was revealed.

中文翻译：

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CO2激光束切割多壁碳纳米管掺杂复合板的研究

目的

本研究的目的是获得掺杂多壁碳纳米管 (MWCNTs) 的坚固材料，并研究多壁碳纳米管的激光切割，并找出激光切割参数对复合材料的影响。

设计/方法/方法

层压复合板是通过使用真空灌注工艺制造的。所生产的复合材料的机械性能根据美国材料试验协会（ASTM）D3039M、ASTM D3171、ASTM D 792和ASTM D2583测定。一台 130 瓦的二氧化碳 (CO ₂ ) 激光切割机用于对两种不同的复合板进行钻孔，厚度为 1.6-1.5 毫米。三个变量被认为是工艺参数，包括激光功率（84.50、104.00 和 127.40 W 三个级别）、切割速度（4、6、8 mm/s 三个级别）和 14 mm 定焦位置。

发现

在使用 84.50 和 104.00 W 激光功率进行的实验中，由于熔化不足，无法切割光纤，但在激光功率为 127.40 W 时成功完成切割。 然而，随着切割速度的增加，激光束的接触时间随着材料的减少，切口减小，但增加的激光功率会产生热效应，导致切割表面周围的硬度增加。与纯复合材料相比，MWCNTs 掺杂复合材料的这种增加较低。研究发现，在层状玻璃纤维复合材料中加入纳米颗粒对材料的强度起到了有效的作用，并影响了CO ₂激光切割质量。

原创性/价值

这项研究是一项独特的研究，其中研究了 MWCNT 掺杂复合材料的 CO ₂激光切割方法，并揭示了使用最合适的激光切割参数没有切割错误，如分层、分裂、变形和毛刺的可加工性。