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Aerospace Materials And Properties

Subject : engineering
  • Answer 21 questions in 15 minutes.
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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Change in the length of an object in some direction per unit.

2. The geometric center of an area.

3. A force with its resultant passing through the centroid of a particular section and being perpendicular to the plane of the section. A force in a direction parallel to the long axis of the structure.

4. Temporary loss of strength and energy resulting from hard physical or mental work

5. The ability of a material to resist deflection or stretching.

6. A material made of multiple layers of fibers held together with a matrix.

7. Something made up of interdependent parts in a definite pattern of organization - such as trusses - frames - or machines.

8. Any alteration of shape or dimensions of a body caused by stresses - thermal expansion or contraction - chemical or metallurgical transformations - or shrinkage and expansions due to moisture change.

9. The amount of plasticity that procedes failure.

10. The way a material responds to specific machining techniques.

11. A surface or shape exposed by making a straight cut through something at right angles to the axis.

12. A mechanical property of a material that shows how effective the material is absorbing mechanical energy without sustaining any permanent damage.

13. Mechanical property of a material that indicates the ability of the material to handle overloading before it fractures.

14. The force acting across a unit area in a solid material resisting the seperation - compacting - or sliding that tends to be induced by external force.

15. Condition caused by collapse - break - or bending - so that a structure or structural element can no longer fulfill its purpose.

16. A condition where there are no net external forces acting upon a particle or rigid body and the body remains at rest or continues at a constant velocity.

17. A mathematical property of a cross section that is concerned with a surface area and how that area is distributed about a centroidal axis.

18. The ratio of the increment of some specified form of stress to the increment of some specified form of strain - such as Young's modulus - the bulk modulus - or the shear modulus. Also known as coefficient of elasticity - elasticity modulus - elastic

19. When a material is reduced in volume by the application of pressure; the reciprocal of the bulk modulus.

20. The condition of a string - wire - or rod that is stretched between two points.

21. A projection used for strength or for attaching to another object