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| Teaching Since: | May 2017 |
| Last Sign in: | 433 Weeks Ago |
| Questions Answered: | 66690 |
| Tutorials Posted: | 66688 |
MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
16.14 A continuous and aligned fibrous reinforced composite having a cross-sectional area of 970 mm2 (1.5 in.2) is subjected to an exter- nal tensile load. If the stresses sustained by the fiber and matrix phases are 215 MPa (31,300 psi) and 5.38 MPa (780 psi), respec- tively, the force sustained by the fiber phase is 76,800 N (17,265 lbf), and the total longi- tudinal composite strain is 1.56 X 10-3, then determine
(a) the force sustained by the matrix phase
(b) the modulus of elasticity of the compos-
are 33.1 and 3.66 GPa (4.8 X 106
and
ite material in the longitudinal direction, and
5.3 X 105
psi), respectively. If the volume
fraction of fibers is 0.30, determine the mod- uli of elasticity of fiber and matrix phases.
16.11 (a) Verify that Equation 16.11, the expres- sion for the fiber load–matrix load ratio (Ff IFm), is valid.
(b) What is the Ff IFc ratio in terms of Ef, Em, and Vf?
16.12 In an aligned and continuous carbon fiber-
(c) the moduli of elasticity for fiber and ma-
trix phases.
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