The formula to calculate Longitudinal Strength of Composite is:
σcl=τm(1−Vf)+σfVf
Longitudinal Strength of Composite refers to its strength along the direction of the fibers or reinforcement. The Stress in Matrix is the stress at the failure of the composite, and the Tensile Strength of Fiber is the maximum stress a material can withstand while being stretched or pulled before breaking.
Let's assume the following values:
Using the formula:
σcl=70,100,000(1−0.6)+6,375,000×0.6=31,865,000 Pascal
The Longitudinal Strength of the Composite is 31,865,000 Pascal.
| Stress in Matrix (Pascal) | Volume Fraction of Fiber (%) | Tensile Strength of Fiber (Pascal) | Longitudinal Strength of Composite (Pascal) |
|---|---|---|---|
| 70100000 | 0.5 | 6375000 | 38,237,500.000000000000000 |
| 70100000 | 0.55 | 6375000 | 35,051,250.000000000000000 |
| 70100000 | 0.6 | 6375000 | 31,864,999.999999992549419 |
| 70100000 | 0.65 | 6375000 | 28,678,749.999999988824129 |