Mechanical Properties Of Materials

Question 0

Compressive strength

Answer 0

The maximum stress a material can withstand before compressive failure

Question 1

List of mechanical properties

Answer 1

Compressive strength, ductility, fatigue limit, flexural modulus, flexural strength, fractural toughness, hardness, plasticity, Poisson’s ratio, shear modulus, shear strain, shear strength, specific modulus, specific strength, specific weight, tensile strength, yeild strength, Young’s modulus, standard coefficient of friction, coefficient of restitution

Question 2

Ductility

Answer 2

Ability for a material to deform under tensile load (given as a percentage)

Question 3

Fatigue limit

Answer 3

Maximum stress a material can withstand under repeated loading

Question 4

Flexural Modulus

Answer 4

The stress to strain ratio of a given material in flexural deformation
The tendency for a material to bend

Question 5

Flexural strength

Answer 5

Ability for a heterogeneous material to resist deformation under a load
Different from tensile strength (in which the material is homogeneous)
Measured in stress

Question 6

Tensile strength

Answer 6

Ability for a homogenous material to resist deformation under a load

Question 7

Fracture toughness

Answer 7

Energy absorbed per unit of material before a fracture occurs
Given as (J/m^2)

Question 8

Hardness

Answer 8

Ability to withstand surface indentation

Question 9

Plasticity

Answer 9

Ability for a material to undergo irreversible deformations

Always negative

Question 10

Poisson’s ratio

Answer 10

Ratio of lateral strain to axial strain

Question 11

Shear Modulus

Answer 11

Ratio of shear stress to shear strain

Question 12

Shear strain

Answer 12

The ability of a substance to change the angle on either side when in a strait beam

Question 13

Shear strength

Answer 13

The maximum shear stress a material can withstand

Question 14

Specific modulus

Answer 14

Modulus per volume unit

Pa/m^3

Question 15

Specific strength

Answer 15

Strength per density unit

Nm/Kg

Question 16

Specific weight

Answer 16

Weight per unit of volume

N/m^3

Question 17

Yeild strength

Answer 17

Point of stress at which a material begins to yeild

Question 18

Young’s modulus

Answer 18

Ratio of lineal stress to linear strain

Question 19

Coefficient of friction

Answer 19

The ratio of the friction force on a specific surface to the normal force of that surface

Question 20

Coefficient of restitution

Answer 20

Ratio of (Relative speed after collision)/(Relative speed before collision)