Fibre Reinforced Polymer (FRP) composites consist of
- AMetal fibers in a ceramic matrix
- BPolymer fibers in a metal matrix
- CFibers embedded in a polymer matrixCorrect
- DPolymer layers bonded with adhesives
Solution
Concept
Composition and phases of FRP composites
Formula
NONE
Step-by-step solution
1. Fibre Reinforced Polymer (FRP) is an engineered two-phase composite structural material. 2. The primary structural load-bearing reinforcement consists of high-strength fibers (carbon, glass, or aramid). 3. These fibers are embedded in and encapsulated by a continuous polymer resin matrix (such as epoxy, polyester, or vinylester). 4. Hence, FRP composites consist of fibers embedded in a polymer matrix. Answer: C
Explanation
Fibre Reinforced Polymer (FRP) composites consist of high-strength structural fibers embedded within a continuous polymer resin matrix. The embedded fibers carry primary tensile loads and provide stiffness, while the polymer matrix binds the fibers together and transfers inter-laminar stresses. This two-phase configuration produces an exceptional strength-to-weight ratio.
Why the other options are wrong
A) Metal fibers in a ceramic matrix represents a ceramic matrix composite (CMC). B) Polymer fibers in a metal matrix represents a metal matrix composite (MMC). D) Adhesive-bonded polymer sheets constitute simple laminates, not fibrous composite systems.
Shortcut
FRP = High-strength Fibers + Polymer resin matrix.
Common mistake
Confusing FRP with Metal Matrix Composites (MMC) or Ceramic Matrix Composites (CMC).
Correct answer: C) Fibers embedded in a polymer matrix