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Laser processing of composite materials.

Author(s)
M. Akram National Engineering and Scientific Commission (NESCOM), Islamabad, Pakistan
A. A. Jafri National Engineering and Scientific Commission (NESCOM), Islamabad, Pakistan
M. Z. Zaman National Engineering and Scientific Commission (NESCOM), Islamabad, Pakistan
N. A. Siddiqui National Engineering and Scientific Commission (NESCOM), Islamabad, Pakistan
M. Salman National Engineering and Scientific Commission (NESCOM), Islamabad, Pakistan
Abstract
Composite materials are newer class of materials, composites are composed of two or more different phases physically bound to each other. A reinforcement phase is embodied by the matrix phase, the reinforcement matrix interphase plays a vital role and dictates the final properties of the composite material, and generally the resultant properties of the materials are far superior to the individual phase properties. Due to the physical mix, the machining and drilling operations becomes tedious. The non-homogeneity of the mechanical operation creates non-homogeneity in the physical and mechanical properties. In the present studies, laser has been used as machining tool for composite materials to minimize the non-homogeneity in the mechanical operation and its effect on the mechanical properties of the composite has been studied. The tensile samples from the sheets of Phenolic Resin, Carbon-Phenolic, Silica-Phenolic and Kevlar/Epoxy were prepared by laser cutting and conventional Machining. The results show that lasers possess the potential of imparting homogeneity in cutting and drilling operations for composite materials. The results have been verified by determining the mechanical properties of the tensile samples prepared from the sheets of material under investigation. The results also show that the UTS and Break % strain in case of laser cutting are much better than mechanical machining process. The UTS of samples of Kevlar/Epoxy cut by laser shows 3.04% and elongation 88 % more as compared to mechanical machining.
Publication Details
Page(s) 131-135
DOI DOI not available
Published Journal: Proc 2rd Int Bhurban Conf Appl Sci Technol, Volume: 0, Issue: 0, Year: 2003

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