t3501-s08-003 - CGN 3501 TEST NO. 3 NAME _ 4/2/08 1. The...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
CGN 3501 TEST NO. 3 NAME _____________________________ 4 / 2 / 0 8 1. The stress-strain diagram of a structural material in a flexure test is given below. Find the following: (A) Elastic modulus. (B) Johnson’s Apparent Elastic Limit. (C) Yield Strength at 0.1% offset. (D) Modulus of Toughness. PLEASE SHOW YOUR WORK and UNITS CLEARLY TO RECEIVE PROPER CREDITS. (20 pts.) 0 1 2 3 4 5 6 7 8 9 10 STRAIN (10 -3 ) 50 40 30 20 10 0 STRESS (Mpa) 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2. The S-N diagram of a material is shown below. (A) A structural member made of this material is to be subjected to 1,000,000 cycles of cyclic stress of 15 ksi during its design life. What is the maximum magnitude of an additional steady stress that can be put on top of the cyclic load without fracture during its design life? Use Soderberg's theory for this problem. (20 pts.) σ yield = 60 ksi σ ultimate = 80 ksi 2
Background image of page 2
3. A steel bar is connected to an aluminum bar as shown below. At 15 ° C, the stresses in the steel and the aluminum bars are zero.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

t3501-s08-003 - CGN 3501 TEST NO. 3 NAME _ 4/2/08 1. The...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online