Abstract
The tool life caused by brittle failure in interrupted cutting is analyzed by the application of the fracture mechanics theory. Fatigue crack propagation characteristics which are required in the analysis are determined for cemented carbide P 20 using the single notched beam specimen in threepoint bend test. Fractographic examinations suggest that the mechanism of brittle failure in interrupted cutting is substantially similar to that in fatigue crack propagation process. The linear relationship on logarithmic scales is obtained between the rate of the fatigue crack propagation and the stress intensity factor range. The analytical results show that the tool life increases with the increase in the ratio of vertical component to horizontal component in cutting force, and also increase in the wedge angle and the rake angle of the cutting tool.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Japan Society of Precision Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
