Structural strength testing refers to the process of evaluating the load-bearing capacity and deformation behavior of building materials or structural components under applied forces. The main purpose of structural strength testing is to assess the mechanical properties of the test object, including key indicators such as tensile strength, yield strength, compressive strength, flexural strength, and toughness. These test results are essential for verifying the stability, load-bearing capacity, and durability of structures, and are a critical step in ensuring structural safety and extending service life.
Structural strength testing is mainly applied in the following fields: aircraft (components, shells, engines, etc.), rail transit, ships, buildings, bridges, and more. Common types of structural strength tests include static loading tests, strain and vibration measurements, structural fatigue tests, thermal strength tests, and destructive tests on test specimens.

The main signal types involved in structural strength testing include: force/load, displacement, strain, and temperature.