Tensile test
Definition: The tensile test is a destructive mechanical testing method for determining the deformation and strength behaviour of a material under uniaxial tensile loading. A standardised specimen is elongated until fracture while force and change in length are recorded continuously. For metallic materials, the method is governed by DIN EN ISO 6892-1.
Practical relevance: The characteristic values determined include yield strength (ReH or Rp0.2), tensile strength (Rm), elongation at fracture (A) and modulus of elasticity (E). The stress-strain curve provides information on elastic and plastic behaviour. The tensile test is the basis for material approvals, procedure qualifications (e.g. welding procedure qualification) and static component design.
Decision-making perspectives:
- Technical decision-makers: Assessment of the load-bearing capacity and safety margins of a material.
- Purchasing/project management: Definition of minimum characteristic values in material specifications.
- Science: Analysis of the plastic deformation behaviour and material model.
- Insurance/law: Verification of mechanical properties in cases of failure or liability.
Typical testing or verification methods: Tensile test on a universal testing machine, extensometer measurement, evaluation of the stress-strain curve.
FAQ:
- Why is the tensile test so important?
- It provides key mechanical characteristic values that are required for design, standard compliance and safety assessment.
