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Gelneren [198K]
3 years ago
5

On a piece of paper, sketch the x-y stress state and the properly oriented principal stress state. Use the resulting sketch to a

nswer the questions in the subsequent parts of this GO exercise.(a) The angle -4.45° locates a principal stress plane. Give the stress value including sign if any.(b) The angle 85.6° locates the other in-plane principal stress plane. Give the stress value including sign if any.(c) What stress or stresses occur on a plane at 40.6°? Give the stress value or values including sign if any.

Engineering
1 answer:
stealth61 [152]3 years ago
6 0

Answer:

See explaination

Explanation:

Please kindly check attachment for the step by step and very detailed solution of the given problem

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mina [271]

Answer:

fracture will occur as the value is less than E/10 (= 22.5)

Explanation:

If the maximum strength at tip Is greater than theoretical fracture strength value then fracture will occur and if the maximum strength is lower than theoretical fracture strength then no fracture will occur.

\sigma_m = 2\sigma_o [\frac{a}{\rho_t}]^{1/2}

=  2\times 750 (\frac{\frac{0.2mm}{2}}{0.001 mm}})^{1/2}

                 = 15 GPa

fracture will occur as the value is less than E/10 = 22.5

7 0
3 years ago
t is desired to produce aligned carbon fiber-epoxy matric composite having a longitudinal tensile strength of 800 MPa. Given (a)
Nesterboy [21]

Answer:

The value of critical length = 3.46 mm

The value of volume of fraction of fibers = 0.43

Explanation:

Given data

\sigma_{T} =  800 M pa

D = 0.017 mm

L = 2.3 mm

\sigma_{f} = 5500 M pa

\sigma_{m} = 18 M pa

\sigma_c = 13.5 M pa

(a) Critical fiber length is given by

L_{c} = \sigma_{f} (\frac{D}{2 \sigma_{c} } )

Put all the values in above equation we get

L_{c} =5500 (\frac{0.017}{(2) (13.5)} )

L_{c} = 3.46 mm

This is the value of critical length.

(b).Since this  critical length is greater than fiber length Than the volume fraction of fibers is given by

V_{f} = \frac{\sigma_T - \sigma_m}{\frac{L\sigma_c}{D} - \sigma_m }

Put all the values in above formula we get

V_{f} = \frac{800-18}{\frac{(2.3)(13.5)}{0.017} - 18 }

V_{f} = 0.43

This is the value of volume of fraction of fibers.

3 0
3 years ago
What information does the api symbol or donut provide?.
kondor19780726 [428]

Answer:

The API "Donut" identifies oils that meet current API engine oil standards.

Explanation:

hope this helps :)

7 0
2 years ago
A client wants Mila’s team to maximize the energy efficiency of their new office building. The client is interested in acquiring
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Answer:

Persuade the client to renovate their existing building both aesthetically and in terms of efficiency and utility of function.

Explanation:

Just would not make sense to tear the building down just to rebuild it when it can be restored.

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2 years ago
Pedro is conducting an experiment to investigate how temperature affects chemical change. He has three pieces of bread. He puts
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Answer: The piece of bread in the toaster had the most amount of chemical change due to exposure to heat

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