Abstract
The author presents the following expression as a new proposition for indentation hardness ; i.e. [numerical formula] in which HN represents the new hardness number, σ the compressive stress, ε the total and εp the permanent strain. He investigated theoretically the relation between this new hardness number and the wide-spread indentation hardnesses which would be obtained by using any one of the indenting tools suchas a ball, a cone, or a prism, etc., and deduced an expression which gives a relation between hardnesses. As an example, he carried out both the compression and hardness tests for copper, mild steel and special steel specimens and compared those results with the above formula. Let HB be a hardness number obtained by ball compression and Hp that due to a prismatic indenting tool, then the formula connecting these hardnesses will be expressed as [numerical formula] where [numerical formula] and λ, λ' are constant depending on one or both of characteristic of materials and angle of prismatic indenting 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: Transactions of the Japan Society of Mechanical Engineers
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.
