Fracture surface

Fracture surface

Curious to know what your thoughts are on this fracture surface, in terms of crack origin in particular. Material is 7075-T73 and this is part of a helicopter primary structure

u/Wolf9455 — 1 month ago
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This model aircraft uses spinning cylinders to fly via the Magnus effect instead of traditional wings.

u/IrisGlenda — 1 month ago
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a V-22 osprey aircraft performs an aileron roll during testing

u/Wolf9455 — 2 months ago
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In 1984, NASA and the FAA deliberately crashed a remotely controlled Boeing 720 to test technologies that might help passengers and crew survive

u/Wolf9455 — 2 months ago
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Man with immaculate calligraphy skills writing on the back of the truck

u/Wolf9455 — 2 months ago
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This is what happens when Iron is heated above its Curie Point (770°C).

Iron is ferromagnetic and by heating you distort the arrangement of electron spins that make it magnetic, and it regains magnetism upon cooling.

u/Wolf9455 — 2 months ago
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Welded rail delivery train showing incredible flexibility during transit - Indian Railways [India]

The 500-meter-long rails rest on a rack of rollers and are rigidly secured ONLY at the center tie-down car, allowing the ends to slide freely and negotiate curves.

u/GeorgeRobertVitkos — 2 months ago
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Alumina aerogel vs 2 blowtorches (1000°C / 1832°F): back stays at 39°C (102°F)

u/Wolf9455 — 2 months ago