CIVIL ENGINEERING, PHYSIC

Part $1$: Tension Testing: Steel Rebars in $$the Diameter of$10$mm $$and $12$mm

$1.$Draw Stress$-$Strain diagrams separately for each specimen according to $$crosshead readings.

$2.$Show their yield stresses for each one and explain how to $$find yield stress from a stress strain diagram.

$3.$Show ultimate stress and fracture stress.

$*$Explain why ultimate stress has a higher value than fracture stress.

$4.$Show elastic region, strain hardening and necking part.

$*$Explain when the specimen undergoes neck$-$down section.

$5.$Calculate and show percent elongation on $$diagram$.$

$*$Express why we $$need percent elongation.

$6.$Calculate toughness.

$*$Mention the relation between toughness, strength and ductility terms with each other.

$7.$Research about what an $$extensometer is$.$Which properties would be $$easier to $$find with an $$extensometer for tension testing?

$8.$Draw only elastic region.

$9.$Calculate Modulus of $$Elasticity from the diagram showing only elastic region.

$*$Survey the Modulus of $$Elasticity of $$each steel rebar.

$*$Compare the results you calculate and the value you search. Make the discussion.

$10.$Draw Stress$-$Strain diagrams by $$using each specimen in $$a graph. Compare the properties on $$which you study.

$-$NAME of $$the EXPERIMENT: Tension Testing

$-$AIM of $$the EXPERIMENT:

$-$PROPERTIES of $$the MATERIALS:

$-$DESCRIPTION of $$the EXPERIMENTAL PARAMETERS:

$-$EXPERIMENTAL METHOD:

RESULTS AND DISCUSSION: