Study on the stop crack growth for shaft by using drilling hole

الملخص EN

The aim of this search is study the effect of the hole for control on crack growth for the rotation shaft, provide rotating shaft in which test work is applied, provide the electrical drill for drilling, the shaft at crack tip.

the test of rotating solid shaft for five months, whine the measure the length and depth hole thickness of the crake within time ,The purport of the hole in the crack tip is distribution the in eternal stresses constrictions for decrease, The applied force on the crack The applied force (F) at the crack tip is convert into two components angel (45) normal and tangential force (F1&F2), The normal force is less than, the applied force, in this case prevent the shaft form failure by using the suitable diameter and depth of the hole for stop of crack growth and kept the continues work.