m112521 / fatigue-machine

Fatigue strength testing machine

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Fatigue strength testing machine

TBD:

  • start button/tumbler;
  • better/faster stop mechanism;
  • replace wire hell with custom PCB shield;
  • bigger motor;
  • better on-shaft fixation;
  • replace kolhoz.

persp

Description

Machine for determining the fatigue strength of samples with different patterns (so-called "living hinge", which makes sample exert flexibility) produced using a laser machine.

Hardware:

  • Amperka Iskra Neo (Leonardo);
  • Amperka Motor Shield;
  • Amperka Troyka Shield;
  • Hall sensor (involved into counting cycles);
  • Amperka Quad Display.

Features:

  • autamatic cycle counting;
  • automatic stop (altough with delay).

Generating samples

Grasshopper definition was designed to make it easier to create different patterns:

def

The process of generating new samples:

gh-sim

Testing samples

If you wait long enough it breaks (either sample or machine):

document_5348505104213357493.mp4

Some broken hearts:

20230629_182247

About

Fatigue strength testing machine

License:MIT License


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