As shown from the below graph: For surface cracks : K=1.10(Qa)1/2 and for embedded cracks : a) the hydraulic test was examined and it was observed that the problem of the rocket engine fatigue in case of 1260MPa application stress with the size of an interior elliptical crack with dimensions (4 mm length, 1.6mm width) was otained before the fracture occurs. After applying heat treatment to the material, the fracture toughness was obtained as KIC =60MPa, and application stress was uyg=1645 MPa. Calculate the uyg stress which is caused by the KCalibration curve shown below. b) There are an elliptical surface and elliptical embedded cracks in the pressure vessel, which is made up of A517-F steel, at the same time. It has been mentioned that the crack length a=10mm,t= 50mm, and 2c=40mm in the system, which is described below. The stresses in the cracked area are properly distributed and subjected to a 300MPa stress. sy is 150MPa and parallel to the crack plane. According to this, calculate the safety factor against fracture cracking. fracture occurs. After applying heat treatment to the material, the fracture toughness was obtained as KIC =60MPa, and application stress was uyg=1645 MPa. Calculate the uyg stress which is caused by the KCalibration curve shown below. b) There are an elliptical surface and elliptical embedded cracks in the pressure vessel, which is made up of A517-F steel, at the same time. It has been mentioned that the crack length a=10mm,t= 50mm, and 2c=40mm in the system, which is described below. The stresses in the cracked area are properly distributed and subjected to a 300MPa stress. sy is 150MPa and parallel to the crack plane. According to this, calculate the safety factor against fracture cracking. Question : Search and Discuss your results with 3 related papers topics deal with surface an or an embedded elliptic cracks. Please Add the related papers to the project and report