Tensile Testing (Leaving Cert Engineering): Flashcards

Most important destructive test in materials science to determine UTS

Maximum force a material can withstand before breaking

Universal testing machine

Ensures material fails in controlled gauge section in middle

Relationship between applied force and material stretch

Specimen-specific, cannot directly compare different materials

$\text{Stress} = \frac{\text{Force}}{\text{Area}}$

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

Material returns to original length when force removed

Permanent deformation, material doesn't return to original length

Transition point from elastic to plastic deformation

Material becomes thinner at weak spot before fracture

Cup and cone fracture

Brittle fracture with clean, flat surfaces