About Tensile Strain & Poisson Ratio Calculator
Calculate engineering tensile strain (ε = ΔL / L), percentage deformation, and microstrain (με) readouts matching foil strain gauges. Computes transverse lateral contraction via Poisson's ratio (ν) for structural materials.
Key Capabilities & Features
- Calculates dimensionless engineering strain (ε), microstrain (με), and percentage elongation
- Computes lateral transverse contraction using material-specific Poisson's ratios
- Built-in material properties for steels, aluminum alloys, titanium, and carbon fiber
- Accurate conversion from physical elongation measurements to strain gauge readouts
- Compatible with Hooke's Law linear elastic deformation calculations
How to Use Tensile Strain & Poisson Ratio Calculator
Select Material
Choose your alloy or composite to set the characteristic Poisson's ratio.
Input Specimen Dimensions
Enter original gauge length (mm) and measured extension/elongation (mm).
Review Strain Metrics
Read out microstrain for instrument calibration and inspect transverse shrinkage.
Privacy & In-Browser Execution Guarantee
100% client-side strain analysis.
Frequently Asked Questions
What is the difference between strain and stress?
Stress (σ) is the internal resistive force per unit area within a loaded body (measured in MPa). Strain (ε) is the resulting normalized physical deformation or elongation (dimensionless ratio).
What is Poisson's ratio?
Poisson's ratio (ν) is the negative ratio of transverse (lateral) strain to axial (longitudinal) strain. When stretched, most materials contract laterally, with ν typically between 0.25 and 0.35 for metals.