Experimental research on electromagnetic heating effects to stop crack propagation in metal components

摘要: Heating by an electromagnetic field is effective method for stopping internal crack propagation in metal components, thus extending their service life improving safety and reliability. Experimental surveys show that a small spherical crater can be formed near the tip using concentrated current which melts at desired point. Experiments also sharp point around rounded, decreases stress concentration forms compressive area. These structure refined obviously. At same time, white-bright layer under influence of precipitous temperature gradient. Thermal compression stresses phase transformation stresses, together with super-fine microstructure, promote ability metals to withstand intense wear. From experiments we find many factors have effect on efficiency arresting.© (2002) COPYRIGHT SPIE--The International Society Optical Engineering. Downloading abstract permitted personal use only.