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Questions and Answers
What is the internal force of a substance that opposes or resists deformation?
What is the internal force of a substance that opposes or resists deformation?
Which stress resists a force that tends to pull apart?
Which stress resists a force that tends to pull apart?
What is the deformation of a material or substance?
What is the deformation of a material or substance?
Which stress tends to shorten or squeeze aircraft parts?
Which stress tends to shorten or squeeze aircraft parts?
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What is the resistance to twisting or torque?
What is the resistance to twisting or torque?
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Which stress resists the force tending to cause one layer of a material to slide over an adjacent layer?
Which stress resists the force tending to cause one layer of a material to slide over an adjacent layer?
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How is the tensile strength of a material measured?
How is the tensile strength of a material measured?
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Study Notes
Internal Force and Deformation
- Internal force within a substance that resists deformation is known as stress.
- Stress is crucial in determining how materials behave under different loads and conditions.
Types of Stress
- Tensile stress is the type of stress that resists forces pulling materials apart, impacting structures like beams under load.
- Compressive stress works to shorten or squeeze objects, essential in aircraft parts that handle various aerodynamic forces.
- Shear stress arises when forces cause one layer of material to slide over another, important in multilayered structures and materials.
Measurement and Strength of Materials
- Deformation refers to the change in shape or size of a material when subjected to stress. It is a key factor in assessing material performance.
- Tensile strength is measured by applying tension until failure occurs. It is often quantified in units such as megapascals (MPa) or pounds per square inch (psi).
Resistance to Rotation
- Resistance to twisting or torque in materials is characterized as torsional strength. This property is vital in applications involving rotational forces, such as shafts in machinery.
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Description
Test your knowledge about the five major stresses to which all aircraft are subjected: tension, compression, torsion, shear, and bending stress. Learn about stress and strain within aircraft structures.
