Abstract
Experimental results are presented for the mechanical properties of Poly Ether Keetone Keetone (PEKK) in compression at high strain rates ranging from 534 s1 to 1927 s1 . Results of quasi- static tests are also presented. All the tests were conducted at room temperature. High strain rate tests were conducted using a Split Hopkinson Pressure Bar (SHPB) and the quasi static tests were conducted in an Instron machine. The material exhibits elastic - plastic behaviour at strain rates below and around 950 s1, above which the behaviour is typical of that of a ductile material with upper and lower yield points and an ultimate strength slightly higher than the upper yield strength. The yield stress, yield strain and modulus of elasticity are presented for different strain rates. The data from the 22 dynamic tests and 8 quasi static tests are statistically analyzed . The dynamic test results are represented by equations and compared to the static test results. Significant increase in compressive yield strength and decrease in yield strain are observed at high strain rates compared to those of the material at quasi static tests.
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 callDisclaimer: 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.
