What Is a Bending Tester?
A bending tester is a type of strength test for materials in which a load is applied to a specimen from above to measure its strength against bending force.
There are two types of bending tester: a three-point test in which a load is applied to the center of the specimen by supporting both ends of the specimen. There is also a four-point test in which a load of the same magnitude is applied at the same distance from the fulcrum at both ends of the specimen.
In the bending tester, the amount of deflection of the specimen is measured when a load is applied to the specimen, and the curve plotting the load versus the amount of deflection is run through analysis software to obtain a bending stress-strain diagram. The maximum stress obtained from the stress-strain diagram is the bending strength of the specimen.