The three-point bending test (3PB) covers the
determination of flexural properties of a material by
measuring the deflection of a sample under applied load.
Figure 9 shows a typical stress-strain curve for the
samples under investigation, diglycidyl ether of bisphenol
A surface-treated silica composites and the neat
epoxy. Table 2 lists the corresponding material proportions
obtained with the 3PB test: elastic modulus (E),
maximum tensile strength (UTS) and elongation at break.