Experimental Study of Macro and Microgeometric Defects in Drilled Carbon Fiber Reinforced Plastics by Laser Beam Machining
| Autor: | Juan Manuel Vázquez Martínez, Mariano Marcos Bárcena, Pedro Francisco Mayuet Ares, A.J. Gámez |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0209 industrial biotechnology
Heat-affected zone Materials science 02 engineering and technology hole quality characteristics lcsh:Technology Article law.invention 020901 industrial engineering & automation Machining law heat affected zone General Materials Science laser beam machining taper carbon fiber reinforced polymer Composite material Tool wear lcsh:Microscopy lcsh:QC120-168.85 geometrical parameters Carbon fiber reinforced polymer Drill lcsh:QH201-278.5 lcsh:T Laser beam machining Drilling 021001 nanoscience & nanotechnology Laser lcsh:TA1-2040 roughness parameters lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials Materials, Vol 11, Iss 8, p 1466 (2018) Volume 11 Issue 8 |
| ISSN: | 1996-1944 |
| Popis: | Plastic matrix composite materials are an excellent choice for structural applications where high strength-weight and stiffness-weight ratios are required. These materials are being increasingly used in diverse industrial sectors, particularly in aerospace. Due to the strict tolerances required, they are usually machined with drilling cycles due to the type of mounting through rivets. In this sense, laser beam drilling is presented as an alternative to conventional drilling due to the absence of tool wear, cutting forces, or vibrations during the cutting process. However, the process carries with it other problems that compromise the integrity of the material. One of these is caused by the high temperatures generated during the interaction between the laser and the material. In this work, variance analysis is used to study the influence of scanning speed and frequency on macro geometric parameters, surface quality, and defects (taper and heat affected zone). Also, in order to identify problems in the wall of the drill, stereoscopic optical microscopy (SOM) and scanning electron microscopy (SEM) techniques are used. This experimental procedure reveals the conditions that minimize deviations, defects, and damage in machining holes. |
| Databáze: | OpenAIRE |
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