Fibre‑reinforced polymer (FRP) is the broad class of composite materials in which high‑strength fibres — most commonly glass, but also basalt or carbon — are embedded in a polymer matrix. The matrix, typically a thermosetting resin such as polyester, vinyl ester, or epoxy, transfers stress between the fibres and protects them from the environment. The resulting material is lightweight, corrosion‑resistant, and can be engineered to deliver tensile strengths from 200 MPa to well over 1 000 MPa depending on the fibre type and architecture.
The term FRP appears across structural engineering, chemical processing, and infrastructure rehabilitation. For formal definitions and scope boundaries, refer to the dedicated definition pages:
- What is FRP – Full definition and classification
- What is FRP Grating – Definition and structural context
Material‑level property data is maintained separately:
- FRP Composite Material Characteristics – Physical and mechanical properties
- GFRP Material Data – E‑glass‑specific values
Standardisation and industry guidance are available from technical committees such as ASTM D20 (Plastics) and the American Composites Manufacturers Association. The core Wikipedia entry provides a neutral, citation‑rich overview of the material class.