Hariharan V S
Indian Institute of Technology (IIT), Chennai
Hariharan V S has created this Calculator and 25+ more calculators!

## < 1 Other formulas that you can solve using the same Inputs

Longitudinal strength of discontinuous fiber-reinforced composite ( less than critical length)
Longitudinal strength of composite(discontinous fiber less than lc)=(Volume fraction of fiber*Fiber length*Critical shear stress/Fiber diameter)+Stress in matrix*(1-Volume fraction of fiber) GO

### Critical fiber length Formula

Critical fiber length=Tensile strength*Fiber diameter/(2*Critical shear stress)
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## Continuous and discontinuous fibers

Fibers that have length greater than 15 times the critical fiber length are called continuous fibers and fibers with smaller length are called discontinuous fibers.

## How to Calculate Critical fiber length?

Critical fiber length calculator uses Critical fiber length=Tensile strength*Fiber diameter/(2*Critical shear stress) to calculate the Critical fiber length, Critical fiber length is necessary for effective strengthening and stiffening of the composite material. Critical fiber length and is denoted by lc symbol.

How to calculate Critical fiber length using this online calculator? To use this online calculator for Critical fiber length, enter Tensile strength (TS), Fiber diameter (d) and Critical shear stress c) and hit the calculate button. Here is how the Critical fiber length calculation can be explained with given input values -> 0.00625 = 100000000*1E-05/(2*80000000).

### FAQ

What is Critical fiber length?
Critical fiber length is necessary for effective strengthening and stiffening of the composite material and is represented as lc=TS*d/(2*τc) or Critical fiber length=Tensile strength*Fiber diameter/(2*Critical shear stress). Tensile strength is the stress at the maximum on the engineering stress–strain curve. The tensile strength is in MegaPascals, Fiber diameter in the fiber-reinforced composites and Critical shear stress is either the fiber-matrix bond strength or the shear yield stress of matrix, whichever is lower.
How to calculate Critical fiber length?
Critical fiber length is necessary for effective strengthening and stiffening of the composite material is calculated using Critical fiber length=Tensile strength*Fiber diameter/(2*Critical shear stress). To calculate Critical fiber length, you need Tensile strength (TS), Fiber diameter (d) and Critical shear stress c). With our tool, you need to enter the respective value for Tensile strength, Fiber diameter and Critical shear stress and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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