Tensile Testing (Leaving Cert Engineering): Flashcards

Most important destructive test in materials science

Max force material withstands before breaking

Universal testing machine

Dogbone design

Creates narrow gauge section for controlled failure

$\frac{\text{Force}}{\text{Cross-sectional Area}}$

$\frac{\text{Extension}}{\text{Original Length}}$

$\text{N/mm}^2$ or $\text{kN/mm}^2$

Material springs back to original length when force removed

Permanent deformation, won't return to original length

Transition from elastic to plastic deformation

Material becomes thinner at weak spot before fracture

Ductile material fracture pattern