How do I simulate a solder joint?

Open this page and use the live Fatigue (S-N) tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.

Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.

Can I use my own numbers?

Absolutely — every input is adjustable, and with data import you can drive a solder joint from your own measurements.

Use case · powered by Fatigue (S-N)

Fatigue (S-N) for a solder joint

Simulate a solder joint live in your browser. This runs the real Fatigue (S-N) solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.

For:Students Researchers Educators Engineers Hobbyists & Makers K-12 Students First Responders

Fatigue (S-N Curve)Live

failure under cyclic load

Controls

Presets

Ultimate strength (MPa)

Stress amplitude (MPa)

Ferrous (has endurance limit)

Repeated loading well below the ultimate strength can still break a part — metal fatigue. The S-N curve plots stress amplitude against cycles to failure. Steels have an endurance limit: below it they last essentially forever, but aluminum has none and eventually fails at any stress. Cause of many catastrophic aircraft and bridge failures.

▶ Run in Python

Data Inspector

Endurance limit250 MPa

Cycles to failure1.17e+5

Verdictfinite life

Governing equation

N = (\frac{σ _{a}}{σ _{f}^{'}})^{1/ b}, σ_{a} = 300 MPa \Rightarrow N = 1.17 e + 5 cycles

Reading this result: At 300 MPa the part fails after about 1.2e+5 cycles. Drop below the 250 MPa endurance limit to reach infinite life.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

About this simulation

The full Fatigue (S-N) tool models a solder joint with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.

More you can do with Fatigue (S-N)

Fatigue (S-N) for a steel beam Fatigue (S-N) for an aluminum frame Fatigue (S-N) for a concrete mix Fatigue (S-N) for a carbon-fiber panel Fatigue (S-N) for a rubber seal Fatigue (S-N) for a glass pane Fatigue (S-N) for a copper wire Fatigue (S-N) for a titanium implant

Other ways to simulate a solder joint

Stress-Strain Curve for a solder joint Carnot Cycle for a solder joint Otto Cycle for a solder joint Phase Diagram for a solder joint Thermal Expansion for a solder joint Entropy for a solder joint

Frequently asked questions

How do I simulate a solder joint?: Open this page and use the live Fatigue (S-N) tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
Is it free?: Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
Can I use my own numbers?: Absolutely — every input is adjustable, and with data import you can drive a solder joint from your own measurements.