1) Based on fracture toughness, an aluminum frame member (made of 7075-T651 Al) is capable of supporting an applied stress of 500 N/mm with a Imm internal crack present

1) Based on fracture toughness, an aluminum frame member (made of 7075-T651 Al) is capable of supporting an applied stress of 500 N/mm with a Imm internal crack present. Using a portable ultrasound detector, inspectors notice a 2 mm internal crack present and recommend reducing the applied load to 400 N/mm. Will this frame member fail under the new guidelines? The geometry factor Y is 1.2.

2) Given that one-half of an electrochemical cell consists of pure aluminum in a 0.5 M solution of Alt ions and the other half consists of pure chromium in a 0.1 M solution of Cr+3 ions. The solutions are held at a temperature of 47C. What is the cell potential, AV? Which electrode will experience the anodic reaction and why?