Artificial Composites and Matrix Composite Examples Quiz
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Questions and Answers

What is the stress experienced by a steel bar with a cross-sectional area of 3 cm² subjected to a tensile force of 30 kN?

  • 20 MPa
  • 10 MPa
  • 15 MPa (correct)
  • 5 MPa
  • If a steel bar experiences an elongation of 0.5 mm under a tensile force, what would be the strain?

  • 0.0005
  • 0.0002
  • 0.005
  • 0.002 (correct)
  • For a material with a Young's modulus of 80 GPa, what is the stress when the strain is 0.0004?

  • 40 MPa (correct)
  • 320 MPa
  • 10 MPa
  • 20 MPa
  • In a material with a yield strength of 200 MPa and a tensile strength of 250 MPa, what force is needed to break a rod with a cross-sectional area of 2 cm²?

    <p>350 kN</p> Signup and view all the answers

    Which property of a material determines if it will break after plastic deformation or at the yield point?

    <p>Modulus of Elasticity</p> Signup and view all the answers

    Which mechanical property measures the resistance to pulling forces?

    <p>Tensile strength</p> Signup and view all the answers

    What property of a material quantifies its stiffness?

    <p>Young's modulus</p> Signup and view all the answers

    Which property of a material measures its ability to deform permanently without breaking?

    <p>Plasticity</p> Signup and view all the answers

    What property of a material is a combination of strength and ductility/malleability?

    <p>Toughness</p> Signup and view all the answers

    Which mechanical property refers to the slow, time-dependent deformation of a material under constant stress?

    <p>Creep</p> Signup and view all the answers

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