Technical Round Materials-Materials Science and Engineering-Free Download
Question 1. What Is The Difference Between The Isotropic And An
If a material exhibits same mechanical properties regardless of loading
direction, it is isotropic.
homogeneous cast materials. Materials lacking this property are
? Question 2. What Are Orthotropic Materials?
Orthotropic materials are a special class of isotropic materials which can
be described by giving their properties in three perpendicular directions
Question 3. A Plain Carbon Steel Has Brinell Hardness Number (bhn) Of
180. What Are The Values Of Rc, Vhn And Ultimate Strength?
Rc = BHN/10 = 18, VHN = BHN = 180
Ultimate strength = 3.48 × BHN MPa = 620 MPa.
Question 4. What Properties Are Needed To Be Considered For Application
Calling For Following Requirements?
Ii) Strength Of No Plastic Deformation Under Static Load.
Iii) Strength To Withstand Overload Without Fracture.
i) Reliability – elastic modulus and yield strength.
ii) Strength (for no plastic deformation under static
loading) – yield point.
iii) Strength (overload) – Toughness and impact
iv) Wear resistance – Hardness.
v) Reliability and safety – Endurance limit and yield.
Question 5. Explain The Effects Of Alloying Chromium And Nickel In
The addition of nickel and chromium increases the tensile strength and
increase in resistance to corrosion takes place.
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