Introduction to Fiber Reinforced Composites: An Overview
1. INTRODUCTION TO FIBER REINFORCED
COMPOSITES
AN OVERVIEW
.
M.S.Santhosh
Junior Research Fellow
Department of mechanical engineering
Selvam College of Technology
Namakkal, Tamilnadu, India.
2. PRESENTATION OVERVIEW
❖Introduction.
❖Classification of FRC.
❖Fundamentals of FRC Manufacturing
❖Processing of PMC’s.
❖Curing Processes.
❖Defects in Fiber Reinforced Composites.
❖Tensile Properties of FRC
❖Flexural Properties.
❖Shear Properties
❖Impact Properties
❖Applications of FRP’S
❖References
3. INTRODUCTION
❖Fiber-reinforced polymer (FRP), also Fiber reinforced plastic, is a
composite material made of a polymer matrix reinforced with fibers.
The fibers are usually glass, carbon, or aramid, although other fibers
such as paper or wood or asbestos have been sometimes used.
❖The polymer is usually an epoxy, vinyl ester or polyester
thermosetting plastic, and phenol formaldehyde resins are still in
use.
❖FRPs are commonly used in the aerospace, automotive, marine,
and construction industries.
.
24. TENSILE PROPERTIES OF PMC’S
Tensile properties, such as tensile strength, tensile
modulus, and Poisson’s ratio of flat composite
laminates, are determined by static tension tests in
accordance with ASTM D3039.
28. FLEXURAL PROPERTIES
Flexural properties, such as flexural strength and
modulus, are determined by ASTM test method
D790.
The flexural strength in a three-point flexural test is
given by,
31. IOSIPESCU SHEAR TEST
(a) test fixture
(b) schematic
representation,
(c) free body,
(d) shear force, and
(e) Bending moment
distribution.
32. TWO-RAIL AND THREE-RAIL SHEAR TESTS.
•
Test configuration for (a) two-rail and (b) three-rail shear tests.
33. FATIGUE PROPERTIES
The fatigue properties of a material represent its
response to cyclic loading, which is a common
occurrence in many applications.
Stress vs. time diagram in a fatigue test.
34. IMPACT PROPERTIES
A variety of standard impact test methods are
available for metals (ASTM E23) and unreinforced
polymers (ASTM D256).
Charpy Test