https://github.com/bezborodow/stress-strain

Instron Stress-strain Plot with GNU Octave (MATLAB-compatible.)
https://github.com/bezborodow/stress-strain

engineering-physics gnu-octave instron material-science matlab stress-strain stress-strain-curves stress-strain-diagram young-modulus

Last synced: 9 days ago
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Instron Stress-strain Plot with GNU Octave (MATLAB-compatible.)

• Host: GitHub
• URL: https://github.com/bezborodow/stress-strain
• Owner: bezborodow
• License: other
• Created: 2023-01-07T17:05:43.000Z (almost 2 years ago)
• Default Branch: master
• Last Pushed: 2024-03-05T09:08:37.000Z (10 months ago)
• Last Synced: 2024-10-26T21:36:30.545Z (about 2 months ago)
• Topics: engineering-physics, gnu-octave, instron, material-science, matlab, stress-strain, stress-strain-curves, stress-strain-diagram, young-modulus
• Language: MATLAB
• Homepage:
• Size: 7.07 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Stress-strain Plotter

This utility will graph a stress-strain plot with [GNU Octave](https://octave.org/). [MATLAB](https://www.mathworks.com/products/matlab.html)-compatible.

## Prerequisites

```

sudo apt install octave-statistics octave-matgeom

```

## Usage

An example plot will give the following output.

```

$ octave-cli stress.m examples/St1594.csv

St1594

E = 159.5514e+009

y =

     4.0547e-03   327.8306e+00

UTS = 497.0183e+000

Ur = 336.7970e+003

Ut = 176.4531e+006

UrA = 976.8397e+003

Ury = 664.6275e+003

```

**E** = modulus of elasticity, **y** = yield point, **UTS** = ultimate tensile strength (MPa), **Ur** = resilience, **Ut** = toughness, **UrA** = resilience calculated by area using [`trapz`](https://au.mathworks.com/help/matlab/ref/trapz.html), **Ury**, resilience calculated by yield point.

A stress strain curve will be plotted:

![St1594 stress-strain](/examples/St1594.svg)

Additionally, a subplot of the linear region will provide greater detail of the elastic properties of the material:

![St1594 stress-strain (linear region)](/examples/St1594_1.svg)

The data in these examples were obtained from an [Instron universal testing machine](https://www.instron.com/en/resources/test-types/tensile-test).

![St1594 stress-strain (linear region)](/examples/IMG_20220908_114042.jpg)

## Author

2022 Damien Bezborodov

This software is in the public domain "AS-IS," without warranty and without liability.