Abstract: A novel method for quantitative characterization of stress
concentration based on the tangential component of metal magnetic memory (MMM)
signal, H_{p}(x), was studied via fatigue testing and MMM
testing of notched plate samples. In this research, the changing regularity of
H_{p}(x) signals is found out. A method to calculate stress
concentration factor from H_{p}(x) signals is established,
and a new conception of magnetic stress concentration factor
K_{H},
H_{p}(x)_{max}/H_{p}(x)_{ave}, is
put forward to quantitatively characterize stress concentration in mechanical
components. The research provides the potential possibility of quantitative
inspection for metal magnetic memory testing.
Keywords: Stress concentration, metal magnetic memory, quantitative characterization, magnetic stress concentration factor
