3. Define the K_IEAC for Titanium alloy Beta 218 (Ti-13%Mo) exposed to 1.5% NaCl, pH 3 solution, in a cantilever beam apparatus, if a minimum load of 70 lbs at a maximum crack length of 1.0 inch causes failure when it is applied to a momentum arm of 5 ft. Assume the width to be (B and Bn) 1.0 inch, and specimen depth 2 inches.