Tensile Testing of Carbon Fiber Reinforced Plastic CFRP Laminate Strips

1
Tensile Testing of Carbon Fiber Reinforced
Plastic (CFRP) Laminate Strips

• Loretta Dyson, Ethel Garcia and
• Christina Randopoulos

2
Introduction

• Definition of CFRP
• Advantages
• Disadvantages
• Applications

3
Objective

• Investigate tensile strength properties of CFRP
  laminate strips
• Compare experimental results with the listed
  mechanical properties of the manufacturer,
  Structural Composites, Inc.
• Compare its tensile strength to that of mild
  steel

4
Experimental Program

• Preparing the 4 black CFRP laminate strips

CFRP Laminate Strip



Aluminum Flat Bar

Top View




228.6 mm




Side View

5
Experimental Program

• Affixing the strain gauges

6
Test Method

• Specimens tested on the SATEC Universal Testing
  Machine

7
Experimental Results
Sample B
Sample A
Samples C and D
8
Experimental Results
Stress vs. Strain Graphs
9
Analysis

• Test Results Published Properties
• 300-400 ksi 360 ksi
• 10-15 Msi gt23 Msi

• Tensile Strength
• Modulus of Elasticity

10
Conclusion

• Tensile strength of CFRP laminate strips were
  within the range of the manufacturers published
  values
• Tensile strength of our samples were higher than
  that of mild steel
• Epoxy proved to be a much better adhesive than
  super glue

11
Acknowledgements

• Dr. Yan Xiao, Professor of Civil Engineering
• Lance Hill , Lab Manager
• Mohamed Al Satari, Teaching Assistant