A specimen of a 4340 steel alloy with a plane strain fracture toughness of 54.8 MPa (50 ksi ) is exposed to a stress of 2431 MPa (352600 psi). Assume that the parameter Y has a value of 0.94. (a) If the largest surface crack is 0.2 mm (0.007874 in.) long, determine the critical stress . Enter your answer in accordance to the question statement MPa (b) Will this specimen experience fracture

a) 2325.98 MPa

b) The specimen will not experience fracture because critical stress calculated in ( a ) 2325.98 MPa < 2431 MPa

Explanation:

Strain fracture toughness = 54.8 MPa

stress = 2431 MPa

Parameter Y = 0.94

a) Determine critical stress

Given that largest surface crack = 0.2 mm

Critical stress = 2325.98 MPa

attached below is the solution

b) The specimen will not experience fracture because critical stress calculated in ( a ) 2325.98 MPa < 2431 MPa

answer:

truck

explanation:

its a truck maybe cause a rv is like a truck and yea but plz mark brainlest!