Answer:
HB=131.69
Explanation:
Given that
Diameter , D= 10 mm
Depth of indentation ,d= 1.55 mm
Load ,P =500 kg
Brinell hardness is given as
Now by putting the values in the above equation we get
HB=131.69
Therefore the hardness of the material will be 131.69 HB.
Metallic glasses are sometimes formed when molten metal is cooled too fast for its atoms to arrange themselves in a structured, crystalline order. "The material can't decide which crystalline structure it wants to converge to, and a metallic glass emerges
Answer: False
Explanation: Sandwich materials are usually in composite material form which has a fabrication of two thin layers which are stiff in nature and have light weighing and thick core .The construction is based on the ratio that is of stiffness to the weight .Therefore, the density of the material in the core is not high and are only connected with the skin layer through adhesive .So the given statement is false that sandwich materials typically use a high density core with non- structural cover plates.
Answer:
T = 438.87 N.m
Explanation:
The power required to raise the 4961 N load in 10 meters for 2 minutes is:
P = Torque × W
T = 438.87 N.m