Hardness Testing (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does hardness testing measure?
What does hardness testing measure?
Resistance to scratching/deformation
What size indentation do harder materials produce?
What size indentation do harder materials produce?
Smaller marks
What is the hard object pressed into the material surface called?
What is the hard object pressed into the material surface called?
Indenter
What is the small test piece positioned on the machine table called?
What is the small test piece positioned on the machine table called?
Widget
What material property must the indenter have?
What material property must the indenter have?
Extremely hard
What shape is the Vickers method indenter?
What shape is the Vickers method indenter?
Diamond pyramid
What does the Vickers method measure on the indentation?
What does the Vickers method measure on the indentation?
Both diagonals of square
What does VHN stand for in the Vickers method?
What does VHN stand for in the Vickers method?
Vickers Hardness Number
What indenter does the Brinell method use?
What indenter does the Brinell method use?
Hardened steel sphere
What does the Brinell method measure?
What does the Brinell method measure?
Diameter of circular indentation
Which method works across wider hardness ranges?
Which method works across wider hardness ranges?
Vickers
What basic principle do both Vickers and Brinell methods share?
What basic principle do both Vickers and Brinell methods share?
Relating load to indentation size