Flexural strength testing has become increasingly important for plastics—especially composite and carbon fiber-reinforced plastics—as structural parts in the aerospace industry are made from these newer materials.
Even for non-structural plastic parts used in electrical insulating materials, printed circuit boards and other products, flexural testing is important to determine support loads and to prove that rigid plastics can withstand deformation without flexing or bending. It’s key to understand the highest flexural stress these materials can experience in order to manufacture durable goods and materials.