Testing & Quality Control
Knits fail biaxially, so a single-direction tensile figure never predicts burst on its own.
— kPa
Thin-walled sphere approximation
The sphere model assumes uniform biaxial loading and ignores the bending stiffness of the fabric, so treat it as a design estimate and confirm on a diaphragm tester.
Knitted Fabric Bursting Strength Modeler — free, with the formula and a worked example, at Textile School.