Compression testing of materials
A compression test to determine the stress-strain curve of a material under uniaxial loading. It provides important information about strength and ductility.
Physical-Chemical Mechanism of Action
A compression test is performed by applying a constant stress to a material while measuring its length. This shows the relationship between the applied force and the material's deformation.
Metallurgical Relevance & Risks in Welding
The compression test provides important data on strength (e.g., yield strength, ultimate tensile strength) and ductility of a material. Incorrect interpretation or inaccurate measurements can lead to faulty material selection, posing risks to safety and component life.
Workshop Practice & Instructions
For the compression test (actually tension test), a tensile testing machine is used. The material is slowly stretched while its length and the applied force are measured. It is important to maintain a constant speed and perform precise measurements. The results should be compared with the specific requirements of the component.