Calculate KI for a rectangular bar containing an edge crack loaded in three-point bending where P=35.0 kN, W=50.8 mm, B=25 mm, a/W=0.2, L=203 mm. (hint: use fracture testing handout)

Explanation:

given data

Load P = 35 kN

Width of bar W = 50.8 mm

Breadth of bar B = 25 mm

Ratio of crack length to width α = a/W = 0.2

solution

we get here KI for a rectangular bar that is express as

  ................................1

here Y is the geometrical function

so

Y =

Y =  

Y =  

Y = 0.9878

so put here value in equation 1

= 5210.45 × 10³    

= 5.21 MPa

this is true

explanation:

i looked it up