Publication de 4 numéros par an
ISSN Imprimer: 2152-2057
ISSN En ligne: 2152-2073
Indexed in
NONCIRCULAR CFRP BICYCLE'S CHAINRING, PART I: STATIC AND LOW-VELOCITY IMPACT ANALYSIS
RÉSUMÉ
The paper presents an experimental analysis to determine the teeth failure of noncircular composite chainring. A noncircular carbon/epoxy chainring with a specific stacking of 11 plies is studied. In a first step, a quasi-static tensile test is realized on the chain and on the chainring to determine their strength. As the damage of composites is a major concern, as a second step the low-velocity/low-energy impact drop tests are performed. Five levels of impact energy are investigated in order to study the energy effect on the teeth damage, and the damage localization is analyzed using C-Scan. Quasi-static results show that the metallic chain fails first. Experimental impact results reveal that teeth damage is presented only for an impact higher than 1.6 J. Finally, the total teeth failure appears for an energy close to 2.5 J.