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We performed this test with a .080" steel pin using a 2" wide (effective) piece of Carbinge™.
We were pleasantly surprised to find a limit load of 1,000 lbs. for this hinge sample. The hinge did not fail at this load, but the pin distorted very slightly. We have computed a new load rating based on this test. Carbinge™ is now rated at 3,000 lbs. per foot with a 100% safety factor. This is an increase of 300% over the former rating of 1,000 lbs. per foot.
| Cycles (in millions) |
CPM | Results | |
|---|---|---|---|
| Accelerated Wear | 1.5 | 2400 | no wear or breakdown detected |
| Extended Wear* | 1.5 | 128 | no wear or breakdown detected |
| End Bearing Wear test** | 1.25 | 64 | <0.0125" wear; no other sign of breakdown |
* Vibration was added to the extended wear test to simulate flutter.
** The End Bearing Wear test included torsional (twisting) stress along the length of the hinge material.
Photo of Test Sample at commencement of test. » View larger photo.
Photo of Sample after testing to 1,000 lbs. Sample is attached to aluminum 'ears' with Hysol 9330 adhesive. This bond also survived the 1,000 lb test. » View larger photo.
