metal specimen having an original diameter of 10.07 mm and gauge length of 46.0 mm is pulled in tension until fracture occurs. The diameter at the point of fracture is 7.17 mm, and the fractured gauge length is 68.9 mm. Calculate the ductility in terms of (a) percent reduction in area (percent RA), and (b) percent elongation (percen

39)A tensile test specimen has a gage length=3.0 inches and a diameter=  .75 inches. Yielding occurs at a load of 38000lbs. The corresponding gage length=3.0103 inches (neglect the .0.2% yield point). The maximum load of 54000lbs is reached at a gage length =3.453 inches. If fracture occurs at a gage length of 3.873inches, determine the percent elongation at fracture (Round to the nearest whole %)

A tension test was conducted for a cylindrical specimen of stain-less steel having an initial diameter (D) of 10.85 mm. Calculate the percentage reduction in area if the fracture diameter of the specimen (d) is 6.15 mm. Select one: O a. 68.87% O b. 69.87% c. 66.87% O d. 67.87%

A structural component in the form of a wide plate is to be made of a steel alloy that has a fracture toughness of 77 MPa.m ¹/2 and a yield stress of 1400 MPa. Inspection of the plate has identified an internal through the thickness crack of length 7.7 mm. Assume a value of Y=1. What is the maximum stress the component should be subjected to in order to not undergo rapid fracture.