Question

please answer both the questions

Question 2 A titanium tube 200mm diameter and 5mm wall thickness is subjected to an internal pressure of 13.5MPa. The tube contains a longitudinal crack along its full length. Assuming that the tube can be approximated by a single edge notched plate subjected to a tensile stress equal to the hoop stress in the tube determine the crack length to cause failure. You may assume that the material fracture toughness is 55 MPavm. Please provide your answer in mm Enter answer Question 3 For the above question if the crack is found to be 1mm deep to what pressure must the tube be subjected to cause failure? Please provide your answer in MPa

Answer 1

DEOmm Pd 13. SX200 at tongtin failuer is ac CrRek ongsh e 70 O O132 Mm This is criHcal cyack lenth to failuer.

Craek alepth Imm internial presg ure Craee Eloepl- T- P= 2tx T4 mm Yeilding in titenium 70 MPa P 10.8 MPa