Dynamic adhesive strength of fiber-polymer systems

A new device for studying the dynamic adhesive strength tau is created. A p rocedure for determining the dynamic adhesive strength in fiber-polymer sys tems under impact loading ("pull-out" technique) is developed The adhesive strength of the interface of polymer-steel wire joints formed bq polymers o f different chemical nature (epoxy resin, polysulfone, and polypropylene) i s examined. It is shown that the dynamic adhesive strength grows as the loa ding rate increases for all the systems under investigation and that the re lationship between the adhesive strength and the loading rate, tau-log (tau ) over dot over a wide range of rates can be described by two straight line s corresponding to the quasi-static and impact loading, respectively. When passing from the quasi-static to dynamic loading the character of scale rel ations of the adhesive strength does not change.