The bending strength test is one of the main mechanical tests used in quality control of the properties of panels, determining the bending strength and modulus of elasticity in bending, required for CE Marking in compliance with the respective European standards (EN 310- test method and EN 13986).
How is the bending test performed?
The test is performed in a universal machine, equipment widely used in several tests where it is necessary to apply a force and measure the displacement/deformation.
The bending test, according to standard NP EN310:2002, consists in applying an increasing load at a certain point of the test specimen, with a determined section and length. The applied load starts at zero and gradually increases with a constant displacement until the test piece ruptures, which identifies its resistance limit. The speed is adjusted in such a way that the breaking load is reached in 60±30 s.
The software of the universal traction machine registers the force and displacement, which are recorded and represented graphically. Through the registered results the Bending Strength (Bending Breaking Stress) and the Elasticity Modulus are calculated.
What is the importance of the Bending test?
The Bending Strength and Elasticity Module allow designers to dimension a part and predict its deformation when it is subjected to an effort that causes it to bend, guaranteeing safety to the breaking and service limit states.