Stress and strain

Question 1

What is the Stress Formula

Question 2

What is the Strain formula

Question 3

What is the Factor of Safety?

Answer 3

the load-carrying capacity of a system beyond what the system actually supports

FOS is a ratio of yield stress divided by the allowable working stress of the design.

Question 4

What is the FOS formula?

Question 5

LABEL THE GRAPH (stress/strain)

Question 6

LABEL THE GRAPH (Materials)

Question 7

What is the resultant force?

Answer 7

The total amount of force acting on the object or body along with the direction of the body

Question 8

What are the reaction forces acting on the Roller?

Question 9

What are the reaction forces acting on the pin?

Question 10

Label the free body diagram (with pins and rollers)

Question 11

What is young’s modulus?

Answer 11

ration of tensile stress strain (rise/run)

Question 12

What is yield strength?

Answer 12

The max stress before deformation

Question 13

What is ultimate tensile stength?

Answer 13

max stress the material can withstand while being pulled or stressed before breaking/fracturing

Question 14

What is fracture strength?

Answer 14

the strength at which a material fails by fracturing or breaking.

Question 15

What is ductility?

Answer 15

Ductility is a physical property of a material that describes its ability to be stretched, pulled, or drawn into a thin wire or thread without breaking

Ductile materials: metal, copper, gold.

Question 16

What is malleability?

Answer 16

Malleability is the physical property of a solid to bend or be hammered into another shape without breaking

Malleable materials: gold, silver, alumininum, and copper

Question 17

What is toughness?

Answer 17

Toughness is the ability to withstand shock loading without fracture.

Tough materials: steel or aluminium

Question 18

What is brittleness?

Answer 18

Brittleness identifies material easily broken, damaged, disrupted, cracked, and/or snapped.

brittle materials: glass, ceramic, graphite, and some alloys with extremely low plasticity

Question 19

What is the relationship between the ductility of steel vs the carbon conetent?

Answer 19

Carbon greatly influences the mechanical properties of carbon steel, including its mechanical strength, hardness, and ductility. Increasing the carbon content increases the mechanical strength and hardness but decreases the ductility and weldability of carbon steel.