Tensile Testing of Carbon Fiber Reinforced Plastic CFRP Laminate Strips

1
Tensile Testing of Carbon Fiber Reinforced
Plastic (CFRP) Laminate Strips
2
Presentation Outline

• Project objective
• Testing procedure
• Data Analysis
• Test Conclusions
• Pros and Cons of CRFP
• Other applications of CRFP
• Presentation conclusions

3
Project

• Objective
• Test the tensile strength of Carbon Fiber
  Reinforced Plastic (CFRP) laminate strips

4
Testing Procedure

• Specimens measured
• Specimens prepared with aluminum fittings and
  epoxy adhesive
• Specimens affixed with strain gauges
• Specimens loaded into the Universal SATEC machine
  and tested for tensile strength

5
Observations

• Preparation
• Difficult to apply epoxy adhesive
• Some difficulty applying strain gauges
• During test
• Specimens showed very little deformation
• Popping sounds due to the individual fibers
• Strip came apart with a loud pop, sending fiber
  shards everywhere

6
Observations Cont.

• After test
• Individual fibers separated and each specimen is
  held together only by the aluminum grips and the
  epoxy adhesive

7
Data Analysis

• Equations used
• Stress
• s F/A
• Cross-sectional Area
• A bt
• Modulus of Elasticity
• s Ee

8
Data Analysis Cont.
9
Testing Results
10
Test Conclusions

• High tensile strength
• Low modulus of elasticity
• Fourth Specimen

11
Pros and Cons of CFRP

• Pros
• High tensile strength
• Resistant to corrosion
• Lightweight
• Easy installation
• Low volume
• Low maintenance costs
• Able to support loads after structural failure

12
Pros and Cons Cont.

• Cons
• Weak in Shear
• Expensive cue to costs of carbon fiber

13
Other Applications

• Sporting applications
• Tennis rackets
• Bike rims
• Ski equipment
• Mechanical applications
• Gears
• Military applications
• Tanks
• Airplanes
• Medical Applications
• X-ray machines
• MRI machines
• Recreational
• Boats

14
In Conclusion

• Thank you Prof. Xiao