22 Questions
What is the unit of the given hardness number in Vickers Hardness test?
HV
Which of the following hardness tests uses a spherical or sphero-conical indenter?
Rockwell Hardness test
What is the ability of a material to withstand shock loading?
Impact Strength
Which of the following hardness tests is used for most metals and uses a 10 mm steel or WC ball indenter?
Brinnell Hardness test
What is the formula for notch impact energy in Charpy Impact Test?
𝑲𝑽 = 𝒎𝒈(𝑯 − 𝒉)
What is the first step in the Rockwell Hardness test?
Apply the minor load
What is the approximate tensile stiffness of steel?
200 GPa
Which type of fracture occurs in materials that resist deformation?
Brittle fracture
What is the term for the ability of a material to absorb energy and deform plastically without fracturing?
Toughness
What is the purpose of hardness testing in material science?
To provide an approximate value of ultimate tensile strength
What is the name of the scale used to characterize the hardness of polymers?
Shore hardness scale
Which of the following materials is used as a reference mineral in the Mohs hardness scale?
Talc
What is the relationship between the ultimate tensile strength (UTS) of a material and its Brinell hardness number (BHN)?
UTS = 3.4 × BHN
What is the term for the deformation of a material under tension, resulting in a localized reduction in cross-sectional area?
Necking
What does a tensile test primarily measure?
Resistance to tensile load
Which of the following is a characteristic of plastic deformation?
It is partially recoverable
What is the modulus of elasticity (Young's modulus) equivalent to in a stress-strain curve?
The ratio of stress to strain
Which property measures a material's resistance to elastic deformation?
Stiffness
In the stress-strain curve, what does the symbol $\sigma_{0.2%}$ represent?
Proof strength
How is ductility commonly measured from the stress-strain curve?
Percentage elongation
What does the ultimate tensile strength ($\sigma_{UTS}$) signify?
Maximum stress a material can withstand before failing
What type of test is a visual test (VT) considered as?
Nondestructive
Material testing methods, including destructive and non-destructive tests, such as tensile, compression, and hardness tests, are discussed in this quiz.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
