Evaluation of Flow Stress using Geometric Conditions of Ball Indentation Test

압입 시험의 기하학적 조건과 유동 응력 선도와의 관계에 관한 연구

Ball indentation tests have been used to estimate the mechanical properties of materials by some investigators. In this study, load-depth curves from ball indentation tests have been analysed using the geometric conditions of ball indentation. Series of numerical calculations and experimental results showed that those curves could be simplified by linear functions. After linearizing the indentation curves, the estimation process of the flow properties became straight forward and the scatter of results could be drastically reduced.