چكيده به لاتين
Abstract:
The link between various components to one another has been pivotal since the beginning of
human life, enabling industries to join several parts of a component to make over an
integrated part. Methods for joining lightweight, dissimilar materials, particularly polymers,
metals, and alloys, are rapidly spreading out in the production of composite structures and
components. This study designed a robust process for friction stir welding (FSW) to connect
polymers and aluminum. The research used the Taguchi method, and by varying critical
parameters such as rotational speed and traverse speed, and considering the effect of their
ratio, the resulting samples were examined for internal shortcoming caused by the FSW
process through non-destructive testing. The validated samples underwent microstructural
analyses (optical microscopy, SEM, XRD), and mechanical tests, including tensile tests, were
conducted on cross-sectional and longitudinal samples relative to the process direction. S/N
results indicated that the optimal spindle speed was 1400 r/min, the welding speed was 45
mm/min, and the optimal improvement welding was practical to epoxy adhesive samples.
SEM analysis further revealed that in conventional friction stir welding, longer defects such
as voids were present. Nevertheless, increasing the shoulder diameter during repair welding
gradually reduced these defects. In repair welding tests, the defects disappeared, which not
only improved weld quality but also ensured the stability of the internal geometry of the weld
material.
Keywords: Friction stir welding, polymer, aluminum, Taguchi method
