Your company is designing a part that will see a cyclically applied load, before calculating the number of cycles till failure you need to determine the endurance limit. Determine the endurance limit on the given loading, geometry, and material.
Given Data:
Sut = 800 MPa
Sy = 310 MPa
Operating temperature = 120 degrees C
Surface Finish: Hot-Rolled
Specimen Rotating? Yes
Cross-section: Solid Circle
d = 20 mm
Reliability = 75%
| Stresses | Min(MPa) | Max(MPa) | Mean(MPa) | Amp(MPa) |
| Axial | -43 | 82 | 19.5 | 62.5 |
| Bending | -20 | 10 | -5 | 15 |
| Torsion | -10 | 10 | 0 | 10 |
| Von Mises | 65.34 | 93.62 | 14.5 | 79.41 |
In: Mechanical Engineering
| Sun Gear | Planet Gear | Ring Gear | |
| Quantity | 1 | 3 | 1 |
|
Module |
2 | 2 | 2 |
| Teeth | 22 | ||
| Pressure Angle | 20 degrees | 20 degrees | 20 degrees |
| Pitch Diameter |
Complete the table above and show solution if possible
Additional specifications:
-Unit is in metric (mm)
-the ring gear is stationary
-the ratio is 10:1 (meaning the sun gear must complete 10 revolutions for each revolution of the output carrier)
In: Mechanical Engineering
What is the ISO/IEC FDIS17025 INTERNATIONAL STANDARD and what is used for becaus our professor wants us to know what we understand from the offical draft paper General requirements for the competence of testing and calibration laboratories
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Refined crude oil has been used to lubricate moving parts in a wide variety of machines and engines. These petroleum-based lubricants are extracted from natural crude oil, and must be refined, desalted, dewaxed, and distilled from crude feedstock. However, recently, engineers are moving towards non-petroleum based lubricants or known as synthetic lubricants. Obtain information about non-petroleum based lubricants and summarize your findings in a brief report by following the format given below. The report should contain minimum 1500 words (excluding figure and table title and content, references)
|
Section 1: Introduction |
|
Section 2: Categories and types of available petroleum based lubricants |
|
Section 3: Categories and types of available non petroleum based lubricants |
|
Section 4: Difference between petroleum based and non-petroleum based lubricants |
|
Section 5: Issues and challenges with petroleum based lubricants |
|
Section 6: References (website url, date assessed AND/OR name of journal/ book, author) Minimum 3 references |
In: Mechanical Engineering
Please describe your life philosophy, focused on your formative years.* (0/1600)
In: Mechanical Engineering
List five FAA maintenance related regulations. How can you as an aviation maintenance manager create success from those regulations?
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State what you understands on the following questions: 1. What is ABNORMAL EVENTS? 2. What is MODIFICATIONS? 3. What is CERTIFICATE OF RELEASE TO SERVICE? 4. Who is TYPE DESIGN ORGANIZATION? GIVE SAMPLE 5. What is the difference between CONFIGURATION DEVIATION LIST and MINIMUM EQUIPMENT list? can you write by computer not hand please
In: Mechanical Engineering
If the voltage amplitude across an 8.50-nF capacitor is equal to
12.0 V when the current
amplitude through it is 3.33 mA, the frequency is closest to:
A) 32.6 MHz
B) 5.20 MHz
C) 32.6 kHz
D) 5.20 kHz
E) 32.6 Hz
In: Mechanical Engineering
Question
(a) Derive linear density expression for FCC [100] direction
and
(b) planar density expression for BCC (100) plane in terms of the
atomic radius R.
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At the beginning of the compression process of an air-standard dual cycle with a compression ratio of 18, the temperature is 300K and the pressure is 0.1 MPa. The pressure ratio for the constant volume part of the heating process is 1:5:1. The volume ratio for the constant pressure part of the heating process is 1:2:1. Determine:
(a.) The temperature and pressure at the end of each process of the cycle.
(b.) The thermal efficiency.
(c.) The mean effective pressure.
In: Mechanical Engineering
Steady, laminar flow in an annulus (flow between two stationary concentric cylinders)
Obtain an expression for the developed velocity
Distribution and the volumetric flow rate for a laminar,
steady, incompressible, fully developed flow in an
annulus.
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Starting from the general expression of the Navier-Stokes equations in cylindrical coordinates, provide the form of the equations for an axisymmetric, steady flow. Explicitly write down the continuity equation as well as the momentum equation in all relevant directions in terms of partial derivatives. (Hint: How much is uθ for this flow? Explain why. How much is ∂/∂θ ?
IMPORTANT NOTE: Please have the answer complete, clear and computer generated!!
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A closed rectangular tank 1.2 m high, 2.4 m long and 1.5 m wide is two-thirds full of gasoline (specic gravity 0.8). Calculate the acceleration which may be imparted to the tank so that the bottom front end of the tank is just exposed. Also calculate the total forces on each end of the tank and show that the dierence between these forces equals the unbalanced force necessary to accelerate the liquid mass in the tank.
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A rectangular tank 1.5 m wide, 3 m long and 1.8 m deep contains water to a depth of 1.2 m. Find the horizontal acceleration that may be imparted to the tank in the direction of its length so that
1. the water is just about to spill
2. the front bottom corner of the tank is just exposed.
3. the bottom of the tank is exposed to its midpoint.
For (2) and (3) above, compute the volume of the water that would spill out from the tank. Also compute the total forces on each end of the tank in each of the cases and show that the dierence between these forces equals the unbalanced force necessary to accelerate the liquid mass in the tank.
In: Mechanical Engineering
In: Mechanical Engineering