Tensile Testing (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
15 questions from this quiz
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Practise the questions
15 questions from this quiz
What is tensile testing primarily used to determine?
What is tensile testing primarily used to determine?
Ultimate tensile strength
What type of machine is used to perform tensile tests?
What type of machine is used to perform tensile tests?
Universal testing machine
Why is the 'dogbone' design used for tensile test specimens?
Why is the 'dogbone' design used for tensile test specimens?
Ensures controlled failure location
What two measurements are recorded during a tensile test?
What two measurements are recorded during a tensile test?
Applied force (kN) and extension (mm)
Why can't load-extension graphs be used to compare different materials?
Why can't load-extension graphs be used to compare different materials?
They are specimen-specific
What advantage do stress-strain graphs have over load-extension graphs?
What advantage do stress-strain graphs have over load-extension graphs?
Allow standardised material comparisons
How is stress calculated in a tensile test?
How is stress calculated in a tensile test?
What are the units of strain?
What are the units of strain?
No units
What happens during elastic deformation?
What happens during elastic deformation?
Material springs back if force removed
What is the yield point?
What is the yield point?
Transition from elastic to plastic
What characterises plastic deformation?
What characterises plastic deformation?
Permanent deformation
What does the highest point on a stress-strain graph represent?
What does the highest point on a stress-strain graph represent?
Ultimate tensile strength
What is necking in a tensile test?
What is necking in a tensile test?
Material becomes thinner at weak spot
What type of fracture do ductile materials typically show?
What type of fracture do ductile materials typically show?
Cup and cone fracture
What characterises brittle fracture?
What characterises brittle fracture?
Clean, flat fracture surfaces