Constant Deflection Static Force

The Constant Deflection Static Force instrument determines the loss of indentation force deflection (IFD), loss of thickness and the structural breakdown by visual assessment of polyurethane.

This process will test a polyurethane sample at a 75% uniform, constant deflection, using two parallel plates. Spacer bars are also a part of the machine. Thus, to maintain a constant 75% deflection throughout the test.