kip per square inch root inch
Fracture toughnessexact by definition
One kip per square inch root inch, equal to 1.098843 MPa·√m. It is the fracture toughness unit of North American aerospace and pressure-vessel practice.
Watch out: The conversion factor is close enough to one that the two units are casually treated as equivalent. They are not. Nine percent on a toughness becomes nineteen percent on a critical crack length, because crack size goes as the square of toughness.
| 1 | 1.0988435 |
One kip per square inch root inch in every fracture toughness unit
| 1,098,840 | pascal root meter (Pa·√m) | |
| 1.09884 | megapascal root meter (MPa·√m) | |
| 1 | kip per square inch root inch (ksi·√in)this unit | |
| 1,000 | pound per square inch root inch (psi·√in) |
Solvers that use fracture toughness