Flashcards in Properties of materials Deck (64):

1

## fundamental requirements of structures (3)

### to enclose a space, withstand forces and transmit them to the ground, load-bearing capacity of soil

2

## types of building loads (4)

### the weight imposed by the building itself, weight of snow or rain, wind loads, weight of occupants and contents

3

## the weight imposed by the building itself, weight of snow or rain, wind loads, weight of occupants and contents are types of...

### building loads

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## to enclose a space, withstand forces and transmit them to the ground, load-bearing capacity of soil are...

### fundamental requirements of structures

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## definition of force

### that which produces a deformation in material

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## that which produces a deformation in material is known as

### force

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## What is Strength

### The ability to resist failure or excessive Plastic deformation under stress

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## The ability to resist failure or excessive Plastic deformation under stress is also Known as

### Strength

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## definition of stress

### intensity of force

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## intensity of force is known as

### stress

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## equation for calculating stress

### stress = force(PSI or MN/M²) / area of which force acts

12

## stress = force(PSI or MN/M²) / area of which force acts

### equation for calculating stress

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## types of stress (3)

###
tensile = tension stress (pulling)

compressive = compression (pushing)

shear = friction/tortion

14

## tensile, compressive and shear are types of...

### stress

15

## bending stresses are...

### dead load on a steel beam. Top half is in compression, bottom half is in tension. Neutral zone is in shear stress.

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## dead load on a steel beam is a...

### bending stress

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## properties of steel (4)

### high strength in tension, compression, shear, bending

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## deformation is...

### consequences of application of force

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## consequences of application of force is known as...

### deformation

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## high strength in tension, compression, shear and bending are properties of...

### steel

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## characteristics of deformation (2)

###
magnitude = amount

type = plastic or elastic

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## plastic, elastic and magnitude are characteristics of what?

### deformation

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## definition of strain

### strain is deformation due to stress

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## Deformation due to stress is known as

### Strain

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## strain is calculated by

### change in dimension / original dimension = strain

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## change in dimension original dimension =

### strain

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## tensile and compressive strain are..

### direct strains

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## examples of direct strains (2)

### tensile and compressive

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## sheer strain is...

### indirect strain

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## indirect strain is known as...

### sheer strain

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## elastic deformation is

### fully recoverable

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## which type of deformation is fully recoverable?

### elastic deformation

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## plastic deformation is

### permanent deformation

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## which type of deformation is permanent?

### plastic deformation

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## within plastic deformation, tension has high...

### ductility

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## tension has high ductility within...

### plastic deformation

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## ductility is...

### a solid material's ability to deform under tensile stress

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## a solid material's ability to deform under tensile stress is known as...

### ductility

39

## What is Stiffness

### Ability of a material to resist elastic deformation under load

40

## Ability of a material to resist elastic deformation under load is Known as

### Stiffness

41

## What is toughness

### The ability of a material to absorb energy by impact or sudden blow

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## The ability of a material to absorb energy by impact or sudden blow is known as

### Toughness

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## The equation used to measure stiffness is...

### Young's Modulus (E)

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## Young's Modulus is used to measure...

### Stiffness.

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## The equation for Young's Modulus is...

### Stress (Tensile or Compressive) / Elastic Strain

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## Stress (Tensile or Compressive) / Elastic Strain is the equation for

### Young's Modulus.

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## Material Stiffness can be referred to as....

### Young's Modulus

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## Young's Modulus can also be referred to as

### Material stiffness.

49

## Component Stiffness...

### is governed by shape of component and distribution of material

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## The shape of a component and the distribution of material leads to...

### Component Stiffness.

51

## Lateral supports e.g.Herringbone Struts prevent...

### twist and shear stress, resulting in a reduced risk for cracked ceilings.

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## The lateral supports which reduce the twists and shear stresses are...

### Herringbone Struts.

53

## The components of a steel I beam are (2)

### Flange (Top & Bottom) Web (Middle)

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## Flange (Top & Bottom) Web (Middle) are components in...

### Steel I beams.

55

## What is Hardness

### Resistance to Indentation under Stress

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## Resistance to Indentation under Stress is known as

### Hardness

57

## What are the long term mechanical properties (2)

### Creep & Fatigue

58

## Creep & Fatigue are characteristics of....

### Long term mechanical properties.

59

## What is Creep

### The effect of long term Stress, leading to additional distortion or failure

60

## The effect of long term Stress, leading to additional distortion or failure is known as

### Creep.

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## What is Fatigue

### The effect of load reversals such as vibrations which lead to failure at relatively low stress.

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## The effect of load reversals such as vibrations which lead to failure at relatively low stress.

### Fatigue

63

## Dimensional changes can by produced by... (2)

### changes in moisture content, changes in temperature.

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