industry news, news 20/08/2026 0
The test setup must be prepared under strictly controlled pre-test conditions to eliminate external factors that could distort rebound deformation data. All test specimens are cut to identical free length and held in a constant temperature and humidity environment for a set period before testing, so their internal stress distribution stabilizes to a consistent baseline state. The test platform is adjusted to a level, vibration-free position, and all loading and displacement components are calibrated against metrology-grade reference standards to ensure no systematic offset exists in the readings. Inspectors also confirm that every specimen selected for comparison shares the same prior processing history, including forming parameters and heat treatment cycles, to guarantee the test results reflect only the variables being studied.
The loading and unloading sequence follows a standardized, repeatable procedure to capture accurate elastic rebound behavior across different specimen groups. Each specimen is secured in a low-clamp-force fixture that prevents slippage without introducing extra constraint stress that would alter natural deformation. A controlled, incremental load is applied at a steady, slow rate until the predefined maximum displacement point is reached, and this load is held for a short fixed duration before being released at the same consistent speed. Displacement data is recorded at regular, predefined intervals throughout the full loading, holding, and unloading cycle, with every data point timestamped to preserve the exact relationship between applied force and deformation change.
Post-test data processing and comparative analysis are carried out to isolate and quantify differences in elastic rebound deformation between test groups. Raw displacement readings are corrected for minor system drift that may occur during the test cycle, to remove any non-specimen related deviation from the final dataset. The total deformation value at maximum load is compared directly against the residual deformation value recorded after full load release, to calculate the exact elastic rebound magnitude for each individual specimen. Comparative data sets are grouped by the controlled test variables, and inspectors document consistent patterns in rebound performance that correspond to different specimen characteristics, laying a clear, traceable foundation for subsequent production process optimization.