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Composites: Mechanics, Computations, Applications: An International Journal

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ISSN Druckformat: 2152-2057

ISSN Online: 2152-2073

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00004 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.08 SJR: 0.153 SNIP: 0.178 CiteScore™:: 1 H-Index: 12

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INVESTIGATION ON FLEXURAL AND IMPACT STRENGTH OF HOLLOW GLASS FABRIC AND E-GLASS FIBER-REINFORCED SELF-HEALING POLYMER COMPOSITES

Volumen 13, Ausgabe 4, 2022, pp. 41-56
DOI: 10.1615/CompMechComputApplIntJ.2022043799
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ABSTRAKT

The present study investigates the self-healing functionality of e-glass unidirectional fiber-reinforced epoxy resin, based on a hollow glass fiber approach under flexural and impact loading. The planned self-healing fiber-reinforced composite constitutes epoxy resin (Lapox ARL-125 + AH-367), e-glass fibers with 0° orientation, embedded hollow glass fabric (HGF) filled with a curing agent (Lapox L-552/K-552), which provides a self-healing functionality. The developed composite is tested on the virgin, damaged, and healed conditions for the various healing periods (1, 2, and 3 days), and recovered flexural, impact strength and subsequent healing efficiency are studied. On day three, the optimum flexural strength achieved is 851.17 N/mm2, with a healing efficiency of 74.53% when subjected to quasi-static load. Similarly, the optimum impact energy absorbed is 4439.26 J/m, and impact strength achieved is 445.88 kJ/m2, with a healing efficiency of 55.58% when subjected to impact load. The results show that developed self-healing composites may provide excellent flexural and impact properties for marine structural applications.

Figures

  • Schematic representation of self-healing concept using hollow fbers (reprinted from
Kanu et al. with permission from Elsevier, Copyright 2019)
  • Filling of (a) Lapox L-552 resin and (b) Lapox K552 hardener in hollow glass fabrics
using vacuum bag
  • (a) Hollow glass fabric, cutting of sheet as per size; (b) e-glass unidirectional fbers; (c)
arrangement of the fber layers; (d) preparation of composites by hand layup technique; (e)compression molding machine; and (f) developed self-healing composite
  • Thermogravimetric analysis for self-healing composites
  • Flexural test specimen specifcations (all dimensions are in mm)
  • (a) Flexural testing on computerized universal testing machine; (b) specimen before testing; and (c) specimens after testing
  • Charpy impact specimen specifcations (all dimensions are in mm)
  • (a) Computerized impact testing machine; (b) specimen before testing; and (c) specimens after testing
  • Scanning electron microscopy for (a) hollow glass fabric and e-glass fbers crack observed for impact load; (b) healing of crack; (c) crack observed for flexural load; and (d) healing
of crack by Lapox L-552 + K552
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