• Avinash Gopal Patil
• Dr. S. Singh

Premature failure is the major problem encountered in the operation of brake discs of the high performance motorbike. Because of road conditions, harsh braking and uneven cooling cycles motorbike brake disc are subjected to cyclic temperature & mechanical loading. Thermo-Mechanical fatigue cracks can often be found on the friction surface of brake discs used in vehicles after a period of usage and include crackle, radial and circumferential patterns. These cracks typically exhibit different initiation and propagation behavior under different braking conditions. In this study, the effect of clamping pressure and thermal stresses on fatigue crack evolution is analyzed by using numerical simulations. A FEA analysis was performed using ANSYS Workbench 18 to determine the temperature & stress allocation in disc during braking. It also gives a good prediction of Crack evolution, crack shape prediction. Kinetics of propagation shows that crack in the specimen propagates circumferentially outward through the surface edge having maximum SIF.

Fatigue Fracture, Crack initiation, Thermal and Mechanical Loading, temperature Gradient, Stress Intensity Factor, FEA.

"INVESTIGATION OF STRESS, DEFORMATION, AND CRACKS IN AISI 4140H-A BRAKE DISC OF USING FINITE ELEMENT METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.604-611, August 2018, Available :http://www.jetir.org/papers/JETIR1808990.pdf

"INVESTIGATION OF STRESS, DEFORMATION, AND CRACKS IN AISI 4140H-A BRAKE DISC OF USING FINITE ELEMENT METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp604-611, August 2018, Available at : http://www.jetir.org/papers/JETIR1808990.pdf