<div class="htmlview paragraph">Due to recent environmental problems as well as requirements for better quality for automobiles, research for high performance asbestos-free friction materials on the brake system was conducted.</div> <div class="htmlview paragraph">The mechanism of brake noise and causes for brake judder have been analyzed.</div> <div class="htmlview paragraph">As a result of research, non-asbestos, non-steel friction material with main fibers of carbon and aramid was developed.</div> <div class="htmlview paragraph">The newly developed friction material showed superior features of higher friction coefficient along with stability, brake noise, brake judder, and wear resistance compared with conventional non-abestos materials.</div> <div class="htmlview paragraph">Also, a new testing method to evaluate friction materials were applied.</div>