Warnick James Module4 Questions with Answers-Student.docx

Warnick James Module4 Questions with Answers-Student.docx -...

This preview shows page 1 out of 3 pages.

SFTY 335 – Module 4 1. Why are components made from steel or aluminum alloy used on aircraft? (up to 4 points) Steel is used in components that will receive high impact forces and need to withstand loads at high temperatures due to its high modulus of elasticity and its tendency to retain strength at high temperatures. Aluminum is used for its higher strength-to-weight ratio, corrosion resistance, high conductivity, and high strength in colder conditions. 2. For each of the following suggest a part on an aircraft that needs that particular material property: hardness, strength, elasticity, placidity, ductility, toughness, and brittleness. (up to 7 points – one point for each answer.) Hardness: Composite flight control surfaces Strength: Steel engine mounts Elasticity Steel landing gear Placidity: Copper wiring Ductility: Steel flap joints Toughness: Aluminum wing joints Brittleness: Aluminum outer skin 3. Explain in why exceeding the yield point causes permeant stain, and how that is measured and calculated. (up to 5 points) The yield point of a material is the point on the stress-strain curve where plastic deformation begins, and the crystalline structure begins to break down. In tensile testing stress is applied to the material and gauges measure for material deformation. The resulting force is measured in Giga Pascals (GPa). 4. What do the temperatures on 1 & 2 of the iron– Carbon phase diagram indicate, shown in the presentation? What is the difference between 3 & 5? Four (4) represents the melted region; will the composition of the alloy be the same?
Image of page 1
You've reached the end of this preview.
  • Summer '14
  • Tensile strength

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern