Astructural component in the form of a wide plate is to be fabricated from a steel alloy that has a plane strain fracture toughness of 102 () and a yield strength of 830 mpa (60190 psi). the flaw size resolution limit of the flaw detection apparatus is 5 mm (0.1969 (a) if the design stress is one-half of the yield strength and the value of y is 1.11, what is the critical flaw length?

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false