Volume 3, Issue 1

    Multi-rate and Multi-modal Characterization of an Advanced Poly(etherimide): Ultem 1000

    (Received 11 November 2013; accepted 10 February 2014)

    Published Online: 2014

    CODEN: MPCOAD

      Format Pages Price  
    PDF Version 27 $25   ADD TO CART


    Abstract

    The key to the effective implementation of polymers in structural applications is an understanding of the mechanical response under a variety of conditions. In this study, an unreinforced poly(etherimide) (PEI) known as Ultem 1000 was characterized under quasi-static and high-strain-rate loading. Standard tension, compression, and torsion experiments were conducted in order to investigate the multi-regime response of this material. The elastic response of the material to multiple loading conditions was correlated using the Ramberg–Osgood model. The effects of thermal and mechanical rejuvenation processes on the mechanical response were investigated; the upper yield strength of the material was reduced, and the strain softening regime responsible for strain localization was largely eliminated. The fracture toughness of the material was evaluated using a Charpy impact test, and the mechanisms of failure were shown to be brittle. The high-strain-rate response of the material to uniaxial compression was evaluated by means of a miniaturized split Hopkinson pressure bar, and the strain-rate dependence of the material was modeled using the Ree–Eyring equations. Finally, a combination of the Ramberg–Osgood model and a novel model was employed to correlate the elastoplastic response of rejuvenated PEI to quasi-static mechanical loading.


    Author Information:

    Zuanetti, Bryan
    Dept. of Mechanical & Aerospace Engineering, Univ. of Central Florida, Orlando, FL

    Mutter, Nathan
    Dept. of Mechanical & Aerospace Engineering, Univ. of Central Florida, Orlando, FL

    Gordon, Ali P.
    Dept. of Mechanical & Aerospace Engineering, Univ. of Central Florida, Orlando, FL


    Stock #: MPC20130088

    ISSN: 2165-3992

    DOI: 10.1520/MPC20130088

    ASTM International is a member of CrossRef.

    Author
    Title Multi-rate and Multi-modal Characterization of an Advanced Poly(etherimide): Ultem 1000
    Symposium , 0000-00-00
    Committee D20