Properties of Materials Flashcards
It is the ratio of the mass of the material and its volume
Density
It is the ratio of volume of pores to the volume of the material
Porosity
Property of a material which is to withsand against the combined action of atmospheric and others factors
Durability
It is equal to the product of density of material and standard gravity due to acceleration
Specific Weight
It is the ratio of the density of a substance to the density of a reference substance
Specific Gravity
The capacity of a material to absorb and retain water
Water Absorption
The ability of a material to permit water through
Water Permeability
The ability to withstand fire without changing its shape and other properties
Fire Resistance
It is the property of a material to withstand agains all atmospheric actions without losing its strength and shape
Weathering Ressistance
__________ are slowly applied such that no shock or vibration is generated in the structure.
Static Loads
Loads that remain in place for an extended period
Dead Load/s
Loads that generate a shock or vibraion in the structure
Dynamic Load/s
Types of Dynamic Loads
Periodic, Random and Transient
Harmonic or Sinusoidal Load, repeats itself with time
Periodic
The load patttern never repeats
Random
An impulse load that is applied over a short time interval
Transient
Relationship between the amount of force applied to a member and its deformation
Linear Relationship
Materials deform in response to loads or forces. In 1678, Robert Hooke published the first findings that documented a linear relationship between the amount of force applied to a member and its deformation. The amount of deformation is proportionɛal to the properties of the material and its dimensions. The effect of the dimensions can be normalized. Dividing the force by the cross-sectional area of the specimen normalizes the effect of the loaded
What year did Robert Hooke published the first findings that documented a linear relationship between the amount of force applied to a member and its deformation
1678
Who published the first findings that documented a linear relationship between the amount of force applied to a member and its deformation
Robert Hooke
It is a property of a material wherein when the load is removed the material must return to its original shape
Elastic Behavior
Ratio of the lateral strain to the axial strain
Poisson’s Ratio
Stress-Strain relations follows a straight line
Linear Material
Return to its original shape when load is removed and reacts instantenously to changes in load
Elastic Material
The slope of the tangent of the stress- strain curve at the origin
Initial Tangent Modulus
The slope of the tangent at a point on the stress-strain curve
Tangent Modulus
The slope of a chord drawn between the origin and an arbitrary point on the stress-strain curve
Secant Modulus
The slope of a chord drawn between the origin and an arbitrary point on the stress-strain curve
Chord Modulus
Type of material behavior that combines both elastic and plastic properties. When a material is subjected to a force, it first undergoes elastic deformation, which means that it deforms temporarily and will return to its original shape once the force is removed. However, if the force is large enough, the material will undergo plastic deformation, which means that it deforms permanently even after the force is removed.
Elastoplastic Behavior
Type of material behavior that combines both viscous (fluid-like) and elastic (solid-like) properties. When a viscoelastic material is subjected to a force, it exhibits a time-dependent response. This means that the material will deform under the applied force and will continue to deform over time, even if the force is removed.
ViscoElastic Behavior
