10 Questions
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?
15 MPa
If a steel bar experiences an elongation of 0.5 mm under a tensile force, what would be the strain?
0.002
For a material with a Young's modulus of 80 GPa, what is the stress when the strain is 0.0004?
40 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?
350 kN
Which property of a material determines if it will break after plastic deformation or at the yield point?
Modulus of Elasticity
Which mechanical property measures the resistance to pulling forces?
Tensile strength
What property of a material quantifies its stiffness?
Young's modulus
Which property of a material measures its ability to deform permanently without breaking?
Plasticity
What property of a material is a combination of strength and ductility/malleability?
Toughness
Which mechanical property refers to the slow, time-dependent deformation of a material under constant stress?
Creep
Test your knowledge on artificial composites and matrix composite examples such as fibreglass, carbon-fibre reinforced polymers, filled polymers, and cermets. Explore the various types of reinforcements used in composites like wood, leather, cotton, wool, silk, and bone. Identify different materials like nano-materials, MEMS, and biocomposites.
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