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"Elastic Deformation" in relation to aircraft structures is a shape change that…

  • A
    is temporary and is reversed after the force is removed.
  • B
    is permanent and is caused by bending loads.
  • C
    will cause visible cracks to appear in the aircraft`s skin.
  • D
    will cause irreversible buckling of the aircraft`s skin.
Deformation refers to the change in size or shape of an object.
Aircraft components are subjected to stresses and these will tend to elongate, compress, bend, shear or twist the component.
  • Providing the resulting deformation is within the elastic limit of the material, the component will return to its original dimension once the deforming load has been removed => Elastic deformation
  • If any load takes the structure beyond the elastic limit the deformation will be permanent => Plastic deformation.

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