Please list and discuss 5 translational opportunities based on the research in designing football helmets to be safe and minimal brain impact injury.

What are some ways that professional collaborations can be managed to reduce the possibility of research misconduct?

Determine the critical resolved shear stress for an iron crystal which deforms by simultaneous slip on (110) [111], (110) [111], (110)[111], and (110) [111] when the tensile stress along [010] is 95.2 MPa. {Manual calculations perfectly OK. But it would be good to do this on a spreadsheet.}

One method in which gear tooth interference can be avoided is to lengthen the pinion teeth and shorten the gear teeth. A 12 tooth pinion with a diametral pitch of 2 teeth/in and a pressure angle of (φ = 20°) is to be meshed with a 60 tooth gear at a center distance of 18 inches. Calculate the maximum addendum length of the gear teeth if there is to be no interference. Then calculate the addendum length of the pinion which will give a contact ratio of 1.6 if the maximum addendum length of the gear is used.

Fluid Mechanics question:

Describe the processes in a wind turbine from a) the perspective of a system and b) from the perspective of a control system

What does Lean Manufacturing try to accomplish? How? Why? Where? When? What message don’t we want Lean to represent, Why? Why is visual management so important? Provide 3 examples from your personal experiences and what would occur if they did not exist?

Things never seem to slow down, particularly on your existing subsea project. While all this activity is going on with the new oil zones, SIT issues, you and your team have to keep up with the design, procurement, fabrication, testing and installation scope for the rest of the subsea project.

The latest problem involves the subsea connectors used throughout your project. Before you hired on, decisions were made to use an older model so-called legacy connection system, which had been used successfully in the past in this area by your company. This particular connection system had not been used in a long time by anyone, and although this connection system load capacities were known, there has been a change to the API Standards that require connector load capacities be re-calculated using different methods and factors. And while your new order for the old design connection system was progressing for your project, the revised design calculations were made, and they are sitting on your desk for review. As your luck would have it, to general surprise the calculations using the current methods proved the connector load capacities to be much smaller than previously shown in the legacy project documentation, which was all that your company had when the decision was made to use this system. Changing the connector system to a different design is a last resort, as it would delay the project by more than a year. You have been asked to investigate this and recommend an action plan.

Question 1. What are the minimum ten key concerns here, and what are your recommendations for how to approach this?

Develop a transient numerical model for the Trombe wall,

Strain gauges are placed at two locations on a wing that is being tested in a wind tunnel. The first gauge is near the fixed base of the wing and the other gauge is near the free wing tip. Two tests are performed: (a) the wing vibration is recorded for low velocity laminar flow and (b) for high velocity turbulent flow. For each of these tests, discuss the following: (i) Describe and compare the time histories you would expect to see recorded by each strain gauge; (ii) Discuss the type of cross-correlation you would expect between X 1 and X 2, the locations of the gauges.

1. A premixed stoichiometric methane-air flame has a laminar flame speed of 0.33 m/s and a temperature of 2200 K. The reactants are initially at 300 K and 1 atm. Find the velocity of the combustion products relative to the flame front and the pressure change across the flame. Assume that the reaction goes to completion and there is no dissociation.

2. Repeat Problem 1 for a premixed stoichiometric methanol-air flame. The flame speed is 0.48 m/s and the flame temperature is 2000 K.

3. For methane, the maximum laminar flame speed in pure oxygen is 11 m/s, whereas in air the maximum flame speed is 0.45 m/s. Explain what causes this increase in the flame speed.

Need help please.

1. A premixed stoichiometric methane-air flame has a laminar flame speed of 0.33 m/s and a temperature of 2200 K. The reactants are initially at 300 K and 1 atm. Find the velocity of the combustion products relative to the flame front and the pressure change across the flame. Assume that the reaction goes to completion and there is no dissociation.

2. Repeat Problem 1 for a premixed stoichiometric methanol-air flame. The flame speed is 0.48 m/s and the flame temperature is 2000 K.

3. For methane, the maximum laminar flame speed in pure oxygen is 11 m/s, whereas in air the maximum flame speed is 0.45 m/s. Explain what causes this increase in the flame speed.

Need help please.

1. The material removal rate of EDM process increases with (select all that apply):

a.Decrease in the melting temperature of the workpiece material, T_m

b.Increase in the discharge current, I

c.Voltage

d.Increase in the melting temperature of the workpiece material, T_m

e.Decrease in the discharge current, I

2. The volume between teeth in saws and broaches is called:

a.Relief

b.Kerf

c.Pitch

d.Gullet

3. Final dimensions of machined features are not the same as dimensions of the tool (or mask) in the following process/processes (select all that apply):

a. Electrical discharge machining (EDM)

b.Photochemical machining (PCM)

c.Electrochemical machining (ECM)

4. What is called a tooth set in saws?
a.The shape of the cutting teeth (their profile).

b.Orientation of the blade (teeth): vertical, horizontal, angled.

c.The way the insert teeth are seated and fixed in the blade.

d.The way in which the teeth are offset from the centerline in order to make the cut be wider than the thickness of the back of the saw blade (or gage)

5.What must be taken into account when using electrochemical machining for parts that need good dynamic strength and fatigue resistance? Select all choices that apply.

a.Chemicals may etch material around grain boundaries at a higher rate. These small cracks represent stress concentrators so additional treatment is needed to remove them, or special care should be taken to avoid grain boundary attack during ECM.

b.There are no negative aspects of ECM on fatigue strength.

c.Splatters that occur at edges.

d.Absence of residual stresses. Subsequent treatment is needed to introduce compressive residual stresses.

6. When using push broaches, one should pay attention to what?

a.velocity at the end of the cut

b. chipping

c. nothing special compared to broaches

d. buckling

e. alignment

7. Which machining operations are capable of making rectangular-shaped keyseats in hubs (holes)?

a. Boring

b.Broaching

c.Turning

d.Shaping

e.Milling

8. In general, nontraditional machining (NTM) technologies have these advantages over traditional machining (select all that apply):

a. Materials that are otherwise difficult to machine do not represent special difficulty for NTM processes.

b.Dimensional accuracy of machined parts is better.

c. Surface finish of machined features is better.

d. It is possible to drill holes with extremely small diameter and very high depth-to-diameter aspect ratio.

e. Residual stresses are smaller or absent.

9. What is used to degrease the pull (or push) force in broaches and/or help easier chip breaking? Select all that apply.

a. Progressive teeth design for flat broaches

b.Push/pull force cannot be reduced in broaches

c.Notched teeth

d.None of the above

e.Rotor or jump teeth

What is Standard Work? What are the benefits of a one-piece flow versus batch manufacturing? What examples have you seen which are either good or bad examples of Standard Work? If bad, what could have made it better? What is the key Lean Tool to have a successful Standard Work Kaizen?

What is Standard Work? What are the benefits of a one-piece flow versus batch manufacturing? What examples have you seen which are either good or bad examples of Standard Work? If bad, what could have made it better? What is the key Lean Tool to have a successful Standard Work Kaizen?