LAJU PERAMBATAN RETAK PADA CANTILEVER BEAM

Sari

This paper discuss about the Crack Growth Rate (CGR) at the cantilever beam which its propagation is perpendicular against longitudinal axiz of the bear, and the beam subjected periodicall force at its free end. The stress generated by the bending moment at the selected point at the beam is proportional to the bending moment it self and iversely against to the area moment of inertia of the cross section at this point. If initially crack presence at this selected point, the crack will growdue to the periodicall stress. Since the crack propagation increases the area moment of inertia decreases. Thus, the peridicall stress increases and the CGR increases.