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Investigation of Creep Behavior of Polyester Resin Composted with Different Volume Fractions of Fiber E-Glass and Aluminum Powder Particles | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 22, Issue 6, 2011, Pages 155-174 | ||
| Author | ||
| Gelass Mukaram Jamal | ||
| Abstract | ||
| Creep behavior was carried for polyester resin composite prepered of different volume fractions of fiber E-glass(roving), and (aluminum powder)under 4-point flexure test at ambient temperature.Flexure strength of woven roving composites show best values in comparison to particulate of aluminium powder . composites or to mixed WR/Al and composites.The creep strain measured up to 103 h for three different stresses namely 15,30 and 45 MPa show that WR composites endures least strain of all other specimens.Creep modulus vs. time show the characteristic behavior of reciprocal creep strain.A mathematical model employed to simulate creep strain at extended long period of time according to stretched exponent or Kohlrauch-William- watts(KWW) decay function by plotting a master line , show that woven roving/ polyester resin composites obey the decay function and extended time behavior of creep strain extrapolated from the master line show that in woven roving- composites of 0.12 and 0.24 Vf the creep strains have increased by about 15.5% for both fractions of the intended time of 105h. The addition of 0.06 Al particles to woven roving- composite has increased the creep strain to 27% allowing the composite to creep more due to presence of Al particles. | ||
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