Pick a material, fly a life — read the fatigue. Build a surrogate from a material and a life mission, fly it through a simulated service life, and see where it cracks. No personal data. The model runs the same fatigue stack used on real structures: rainflow → Walker S-N → Palmgren-Miner.
Predict, then verify. This is the surrogate model — it predicts where you'd crack, before you commit. The matching full-scale test is the Hindsight 80/20 fatigue analysis, run on your own logged history. Analysis predicts; the test confirms it. They pair — they never overlap.
Your seven Mind My Material archetypes — the material families. Each chip carries a specific real material (shown on the chip) with its own S-N curve, endurance limit (or none), and the way it hides or shows damage. Metals lets you choose the specific metal.
A life path, read as a load spectrum. There's no best material — only the right load path for each one.
Each mission is four rainflow bins — stress amplitude and mean as a fraction of the material’s UTS, with a yearly cycle count. The dashed line is UTS; only the Sailplane / Monk block stays well clear of it, while Transport rides near it on a high mean and the Aerobatic shock spike crosses it. Pick a mission above to highlight its spectrum.
A season is usually a blend: 60% Transport, 25% Fighter, 15% Depot. Allocate yours — the sliders normalize to 100% — and fly the blended spectrum. In Hindsight Daily you can declare the same mix and check it against the spectrum you actually flew.
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| Rainflow bin | Sa (ksi) | Sm (ksi) | Sar (ksi) | Ni (cyc) | ni/yr | ni/Ni |
|---|---|---|---|---|---|---|
| Σ damage per year — Palmgren-Miner | — | |||||
Every material, every mission, at a glance. Some paths are optimized to the material — and every material thrives somewhere.
Mismatched is not weakness. It's the wrong load path for that material — put the same specimen on its mission and it thrives. The grid reads fit, not worth.
How the fatigue model works — the anchor S-N curve, the five-stage pipeline, the load spectra, and where “not ideal” really comes from. Four pages, PDF.
The four profiles this test reads — Fighter, Sailplane, Transport, Aerobatic — now power the Mission tab in Hindsight Daily — and as of v2.2 every one of the eight flies HERE too, including a blended mission mix. The other four: Trainer (become someone new), Rescue (fly toward someone in trouble), Test bed (prototype a life change), and Depot (deliberate ground time — refit is a mission too). Pick the spectrum you're flying, name the mission in your own words, and one tap a day tracks whether the days build it.
Take this test first and the Daily app stars the spectra your material typically flies well — the material's strong applications, translated to missions. A mirror, not a verdict.
This test flies your material through a mission. The free body diagram reads the forces on you right now — lift, weight, thrust, drag, wind, and the gust — and tells you whether today’s balance is a climb, a cruise, or a descent nobody declared.
Open the free body diagram — i5.2.2iSight Laboratories has built and proven out a tracking program for human wellness — Hindsight 80/20. To begin capturing your life’s flight data today, join the fleet-tracking iSIP program.
Open the fatigue sheet
