Quantifying Material Strength through Rebound Height Analysis in a Ball Impact Test

This study explores a non-destructive method to evaluate the strength of materials by analyzing the rebound height of a 20mm steel ball dropped onto a flat material surface.The methodology involves dropping a calibrated steel ball from a fixed height and measuring the rebound height to infer material properties such as hardness and compressive strength.Experiments were conducted on three materials-steel, aluminum, and concrete-with a standardized setup.Rebound heights were correlated with material strength using calibration curves derived from known material properties.Results indicate a strong correlation between rebound height and material hardness, with steel exhibiting the highest rebound (85% of drop height) and concrete the lowest (45%).The proposed method offers a costeffective, portable alternative to traditional destructive testing, with potential applications in quality control and structural assessment.Limitations include surface condition variability and the need for material-specific calibration.