Welding analysis and optimization of ultra- sonic welding in HDPE-5%PBI composite by CODAS decision-making approach
نویسندگان
چکیده
Abstract Engineering plastics are increasingly being used in structural and non-structural applications. As the need for grows, so do joining requirements. Ultrasonic welding is one of favoured processes polymer composites among numerous approaches, especially bonding plates, automotive panel boards couplings due to its joint quality low cost. The High-density polyethylene (HDPE) matrix was reinforced with 5 wt% polybenzimidazole (PBI) fibre by twin screw extrusion process samples were prepared using injection moulding. In this study, connect 4 mm-thick lapped HDPE-5wt% PBI composites. Taguchi-based L27 orthogonal array employed experiments study lateral shear strength (LSS) Shore-D-Hardness input parameters (i) weld duration (30,45 60 ms), (ii) frequency (19,20 21 Hz) (iii) horn pressure (1.5, 2 2.5 MPa). relevance affecting hardness studied analysis variance (ANOVA). ANOVA results shows (Hz) time (ms) had contributed 32.4% 31.6% determining contributes 45% shore D hardness. ultrasonic carried out, multi-criteria decision-making (MCDM) approach optimise parameters. From CODAS assessment relative evaluation score 2.444 achieved twenty fifth experiment having (IP) at ms time, Hz MPa considering each output factor an entropy 0.5. Fractography morphology welded joints investigated scanning electron microscope (SEM).
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ژورنال
عنوان ژورنال: Physica Scripta
سال: 2022
ISSN: ['1402-4896', '0031-8949']
DOI: https://doi.org/10.1088/1402-4896/ac8120