1) a) Explain why metals are ductile and ceramics are brittle, in terms of their dislocation motion. b) Draw 2 pictures to sequentially show an edge dislocation gliding through a crystal, using dots to represent the atoms. c) Draw 2 pictures to show how a dislocation can climb by capturing a vacancy. d) What factors limit dislocation mobility? e) What positive and negative effects does limiting dislocation mobility have on mechanical properties?

## 1) a) Explain why metals are ductile and ceramics are brittle, in terms of their dislocation motion. b) Draw 2 pictures to sequentially show an edge dislocation gliding through a crystal, using dots to represent the atoms. c) Draw 2 pictures to show how a dislocation can climb by capturing a vacancy. d) What factors limit dislocation mobility? e) What positive and negative effects does limiting dislocation mobility have on mechanical properties?

1)    a) Explain why metals are ductile and ceramics are … Read More...

How will this affect its mechanical properties (strength, ductility)? Hint: think about how the motion of dislocations is blocked by grain boundaries.

## How will this affect its mechanical properties (strength, ductility)? Hint: think about how the motion of dislocations is blocked by grain boundaries.

info@checkyourstudy.com Also, during recrystallization, the mechanical properties that were changed … Read More...

2. The failure density distribution for mechanical component is given by: fT(t) = (ct)* exp(-.5*c*t^2) where ‘c’ is a parameter of the distribution. Determine: • Cumulative distribution of the failures (5 points) • Reliability of the components (5 points) • Hazard rate for the components (5 points) • Mean, standard deviation of the failure distribution and reliability of components at the end of 2 years, when c=0.0025 (5 points) • Plot the Failure rate density function, Failure time distribution function, Reliability function and Hard Rate function for the given distribution when c=0.0025 (5 points)

## 2. The failure density distribution for mechanical component is given by: fT(t) = (ct)* exp(-.5*c*t^2) where ‘c’ is a parameter of the distribution. Determine: • Cumulative distribution of the failures (5 points) • Reliability of the components (5 points) • Hazard rate for the components (5 points) • Mean, standard deviation of the failure distribution and reliability of components at the end of 2 years, when c=0.0025 (5 points) • Plot the Failure rate density function, Failure time distribution function, Reliability function and Hard Rate function for the given distribution when c=0.0025 (5 points)

info@checkyourstudy.com 2.    The failure density distribution for  mechanical component is … Read More...

8) A heavy steel ball is attached to a light rod to make a pendulum. The pendulum begins at rest at instant A, as shown. The ball is then pulled to one side and held at rest. At instant B, the pendulum is released from rest. It swings down and passes its original height at instant C, as shown. The total mechanical energy of the pendulum is greatest at: a) Point B b) Point C c) Equal at both instants d) Since the mass of the ball and the height it is raised to before it is released is not given it is impossible to determine.

## 8) A heavy steel ball is attached to a light rod to make a pendulum. The pendulum begins at rest at instant A, as shown. The ball is then pulled to one side and held at rest. At instant B, the pendulum is released from rest. It swings down and passes its original height at instant C, as shown. The total mechanical energy of the pendulum is greatest at: a) Point B b) Point C c) Equal at both instants d) Since the mass of the ball and the height it is raised to before it is released is not given it is impossible to determine.

8) A heavy steel ball is attached to a light … Read More...
What is meant by the term viscoelasticity

## What is meant by the term viscoelasticity

In actuality all materials depart from Hooke’s law in numerous … Read More...