Analysis of relative uncertainty in impact experiment for three typical aluminum alloy materials

By verifying the physical properties of composite materials in aircraft parts, it offers technical support and guarantee for the material selection of various parts of the aircraft and mitigates the significant influence of various uncertainties on the judgment of test results. In this paper, three typical composite materials are subjected to impact tests, and the uncertainty of the impact performance of three types of aircraft metal structures in low-energy impact tests is quantitatively analyzed. The causes of uncertainty are examined, and measures are formulated to effectively reduce the impact of uncertainty factors on the test results.