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Percent elongation Formula

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Percent elongation is the percentage of plastic strain at fracture. Check FAQs

%EL = (l f - L 0) \cdot \frac{100}{L 0}

%EL - Percent elongation?l_f - Fracture Length?L₀ - Original Length?

Percent elongation Example

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Here is how the Percent elongation equation looks like with Values.

Here is how the Percent elongation equation looks like with Units.

Here is how the Percent elongation equation looks like.

-99.7 = (1.5 - 5000) \cdot \frac{100}{5000}

-99.7 = (1.5cm - 5000mm) \cdot \frac{100}{5000mm}

-99.7 = (1.5 - 5000) \cdot \frac{100}{5000}

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Percent elongation Solution

Follow our step by step solution on how to calculate Percent elongation?

FIRST Step Consider the formula

%EL = (l f - L 0) \cdot \frac{100}{L 0}

Next Step Substitute values of Variables

∴

%EL = (1.5cm - 5000mm) \cdot \frac{100}{5000mm}

Next Step Convert Units

∴

%EL = (0.015m - 5m) \cdot \frac{100}{5m}

Next Step Prepare to Evaluate

∴

%EL = (0.015 - 5) \cdot \frac{100}{5}

LAST Step Evaluate

∴

%EL = -99.7

Percent elongation Formula Elements

Variables

Percent elongation

Percent elongation is the percentage of plastic strain at fracture.

Symbol: %EL

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Percent elongation

Fracture Length

Fracture length is the length measured subsequent to fracture and after the two broken ends have been repositioned back together.

Symbol: l_f

Measurement: LengthUnit: cm

Note: Value should be greater than 0.

Formulas to find Fracture Length

Original Length

The Original Length refers to the material refers to its initial size or dimension before any external forces are applied.

Symbol: L₀

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Original Length

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σ c = \sqrt{2 \cdot E \cdot \frac{γ s}{π \cdot a}}

Go Stress concentration factor

k = 2 \cdot \sqrt{\frac{a}{𝜌 t}}

How to Evaluate Percent elongation?

Percent elongation evaluator uses Percent elongation = (Fracture Length-Original Length)*100/Original Length to evaluate the Percent elongation, Percent elongation is the percentage of plastic strain at the fracture. Percent elongation is denoted by %EL symbol.

How to evaluate Percent elongation using this online evaluator? To use this online evaluator for Percent elongation, enter Fracture Length (l_f) & Original Length (L₀) and hit the calculate button.

FAQs on Percent elongation

What is the formula to find Percent elongation?

The formula of Percent elongation is expressed as Percent elongation = (Fracture Length-Original Length)*100/Original Length. Here is an example- -99.7 = (0.015-5)*100/5.

How to calculate Percent elongation?

With Fracture Length (l_f) & Original Length (L₀) we can find Percent elongation using the formula - Percent elongation = (Fracture Length-Original Length)*100/Original Length.

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Percent elongation Formula

Percent elongation Example

Percent elongation Solution

Percent elongation Formula Elements

Other formulas in Failure Testing in Materials category

How to Evaluate Percent elongation?

FAQs on Percent elongation

Variable Name