Carbon fiber composite material is composed of carbon fiber and resin matrix. It has low density, high strength, impact resistance, low thermal expansion coefficient, and strong designability. It can replace other materials to make structural parts, so carbon fiber structural parts and other material structural parts What are the differences in performance?
1.Specific strength and specific modulus:
At present, carbon fiber resin-based composite materials are mostly used on the market. The most notable feature of this material is its light weight and high strength. Its density is 1.6g/cm, and its specific strength is 5 times that of steel. , 4 times that of aluminum alloy; and the specific modulus is 4 times higher than that of aluminum alloy and steel. Such excellent mechanical properties can make carbon fiber composite materials have better application space in structural parts and other components.
2.Fatigue resistance:
The fatigue strength limit of traditional metal materials is 30%~50% of its tensile strength, while the fatigue strength limit of carbon fiber composite materials is 70%~80% of its own tensile strength, which can make carbon fiber structural parts in It maintains good mechanical properties under long-term load changes, and its service life is much higher than that of traditional material structures.
3.Damping and shock absorption:
In addition to being related to the shape, the natural vibration frequency of the stressed structure is also proportional to the square root of the specific modulus star of the structural material, which can be known from the analysis of the comparative modulus. Carbon fiber composites have higher natural vibration frequencies than metals, and their interface has a greater ability to absorb vibration, so the material has higher damping, these characteristics are conducive to improving the seismic performance of the composite structure.
4.Damage safety:
In actual situations, the damage of carbon fiber composites needs to go through a series of processes such as matrix damage, cracking, interfacial debonding, and fiber fracture. After a few carbon fibers are broken, the load will be transmitted through the matrix. Disperse to other intact fibers Up, there will be no sudden rupture of structural parts, and the safety is better. However, the damage of metal materials continues to increase after rupture, and the load cannot be evenly distributed.
We have other carbon fiber composite tubes, for example, roll wrapped carbon fiber tubes,among them we have customize CFRP tubes Pultruded carbon fiber tubes.
