Cite five factors that lead to scatter in measured material properties. Upon what three criteria are factors of safety based? A
1 answer:
Three questions there, let me try to organize them.
a) Cite five factors that lead to scatter in measured material properties.
- Material inhomogeneities and/or compositional differences.
- Variation in specimen fabrication procedure
- Test method
- Apparatus calibration
- Operator bias
b) Upon what three criteria are factors of safety based?
- Accuracy of measurement of mechanical forces and/or material properties
- consequences of failure
- Previous experience
A large tower is to be supported by a series of steel wires. It is estimated the load on each wire will be 15,000 N. Determine the minimum equired wire diameter, assuming a factor of safety = 2.0 and a yield strength of 800 MPa (125,000 psi) for the steel. Reflect by commenting on the meaning of your answer.
Where,
Working stress
Allowable working unit stress
N= Factor of safety
Given the information we have,
Diameter and force are related by,
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Answer:
Pressure- temperature diagram of the fluid is the phase lines that separate all the phases.
Explanation:
Step1
Pressure temperature diagram is the diagram that represents the all the phases of the fluid by separating a line. There is no phase change region in the pressure temperature diagram out of 15 possible diagrams. There are three lines that separate the phase of the fluid. These three lines are fusion, vaporization and sublimation.
Step2
The intersecting point of these lines is triple point of fluid. Out of 15 possible phase diagram, only pressure temperature diagram has triple point as a point. In other diagrams phase change region is present and triple point is not a point. Critical point is the point in all possible property diagrams.
Pressure temperature diagram is shown below:
