Question

The purpose of the tensile test is _______.
  
1. To collect and understand the % reduction in area
2. To classify if a material is ductile or brittle
3. To determine and measure how flexible a material is
4. To collect and understand the % elongation data

(Select one or more)

Answer 1

All the options are correct.

in tensile testing tensile load is applied and we get data of load vs deformation of work piece.we plot load vs deformation graph from there we can get many information like ductility,toughness,yield point,percentage deformation in area or length,fracture point etc.

this is a example image of tensile image from load vs deformation curve we can find out stress vs strain curve also.

1-we collect data of load vs deformation in length so from there we can find %area reduction also by taking volume constant.

2-for ductile material percentage elongation before fracture should be more than 5% other wise the material will be considered brittle. as from tensile testing we can find percentage elongation at different points so we can say a material is ductile or brittle.

3-flexibilty depends on toughness. area under load vs deformation up to fracture point gives toughness.hence we can say tensile test give info about flexibility also.

4-we already discussed that tensile test gives elongation data from there we can find % elongation data.