Answer:
Therefore, the options a)-to transfer stress to the other phases b)- to protect phases from environment, are both correct.
Explanation:
A composite material is made by mixing two or more materials of different physical and chemical properties. The characteristics of the resulting composite material is different from the properties of the constituting materials.
The two main constituting phases of a composite material is the binder or the matrix and the dispersed phase (reinforcement).
The main function of matrix in a composite is to protect the fibers from any environmental damage and transfer stress to the other reinforcement phase.
Answer:
<em>The normal stress is 0.7821 MPa</em>
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Explanation:
The external diameter D = 160 mm
The thickness t = 3.8 mm = 3.8 x 10^-3 m
gauge pressure P = 78 kPa = 78 x 10^3 Pa
The maximum shear stress τmax = ?
The external radius of the shell from the external surface R = D/2 = 160/2 = 80 mm
The internal radius of the shell r = R - t
==> 80 - 3.8 = 76.2 mm
Therefore the internal diameter d = 2r = 2 x 76.2 = 152.4 mm
==> d = 152.4 x 10^-3 m
The normal stress σ = = = 782052.63 Pa
==> σ = <em>0.7821 MPa</em>
Answer: Aerosol Cans
Explanation: I just did the quiz
Answer:
The pump operates satisfactorily.
Explanation:
According to the NPSH available definition:
Where:
The absolute pressure is the barometric pressure Pb minus the losses: Suction Lift PLift and pipe friction loss Ploss:
To convert the losses in head to pressure:
So:
The absolute pressure:
replacing on the NPSH available equiation:
As the NPSH availiable is higher than de required the pump should operate satisfactorily.
Answer:
Explained
Explanation:
This situation can occur because of various factors such as:
- Gradual deterioration of lubrication and coolant.
- change of environmental condition such as temperature, humidity, moisture, etc.
- Change in the properties of incoming raw material
- An increase or decrease in the temperature of the heat treating operation
- Debris interfering with the manufacturing process.