High Strain Rate Compressive Behavior of Polyurethane Resin and Polyurethane/Al₂O₃ Hollow Sphere Syntactic Foams

Figure 4

(a) Strain signals obtained from the high strain rate testing of the neat resin at a strain rate of 5800 s⁻¹, (b) stress-strain and strain rate-strain plots evaluated from the strain signals, and (c) confirmation of stress equilibrium.

(a)

(b)

(c)