Beschreibung:
<jats:title>Abstract</jats:title><jats:p>A servo‐hydraulic testing system which can simultaneously produce high loads and rapid response is described. This system allows the testing of relatively large plastic specimens, which makes it possible to perform dynamic‐mechanical and transient experiments on high modulus materials, specimens routinely molded for tensile testing, and specimens removed from actual processed articles. Such large specimens also permit the use of extensometers directly attached on the gage section, providing important data for the accurate calculations of material properties. Dynamic‐mechanical data on poly(methyl methacrylate), glass‐filled nylon, and talc filled polypropylene specimens removed from an injection‐molded dishwasher tub were obtained to demonstrate the capability of the system. Stress relaxation experiments in the nonlinear range were performed on polycarbonate to illustrate the transient testing capability of the system.</jats:p>