Abstract

This paper examines the phenomenology of the large strain, post-yield behavior of the three thermoplastics—polycarbonate, polybutylene terephthalate and polyetherimide—from the point of view of the sheet forming process. A photographic technique is utilized to measure the large nonhomogeneous strains observed in polymers. This technique makes possible the mapping of the strain field for flat specimens in the form of strain contours. Amorphous polymers polycarbonate and polyetherimide are shown to behave differently from semicrystalline polybutylene terephthalate. All three polymers are shown to neck in a stable manner, with the necked regions undergoing very large strains. The mechanical properties of the necked/drawn polymer are shown to be substantially different from the properties of the virgin polymer.

Full Text
Paper version not known

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 call

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.