Answer:
Feedback control of arm movements using Neuro-Muscular Electrical Stimulation (NMES) combined with a lockable, passive exoskeleton for gravity compensation
Answer:
The torque on the section is 563.373 Nm
Explanation:
The torque in the section can be calculated through torsion formula. The torsion formula is given as follows:
Torque = T = τJ/ r
where,
r = maximum radius = 5.5 cm/2 = 2.75 cm = 2.75 x 10^-2 m
τ = maximum shear stress = 22 MPa = 22 x 10^6 Pa
J = Polar moment of inertial = π/2 (ro^4 - ri^4)
J = π/2 (0.0275^4 - 0.01875^4) m^4 = 7.042 x 10^-7 m^4
Therefore:
T = (7.042 x 10^-7 m^4)(22 x 10^6 Pa)/(2.75 x 10^-2 m)
<u>T = 563.373 Nm</u>
Answer:
<em>a) 42 mm</em>
<em>b) 144.4 MPa</em>
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Explanation:
Load P = 200 kN = 200 x 10^3 N
Torque T = 1.5 kN-m = 1.5 x 10^3 N-m
maximum shear stress τ = 100 Mpa = 100 x 10^6 Pa
diameter of shaft d = ?
From T = τ * *
substituting values, we have
1.5 x 10^3 = 100 x 10^6 x x
= 7.638 x 10^-5
d = = 0.042 m = <em>42 mm</em>
b) Normal stress = P/A
where A is the area
A = = = 1.385 x 10^-3
Normal stress = (200 x 10^3)/(1.385 x 10^-3) = 144.4 x 10^6 Pa = <em>144.4 MPa</em>
Explanation:
there are three stages of heat treatment
1.hit the metal slowly to ensure that the metal maintains a uniform temperature
2.soak or hold the metal at a specific temperature for a alloted period of time
3.cool the metal to room temperature
Answer:
Hydraulics is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids. At a very basic level, hydraulics is the liquid counterpart of pneumatics, which concerns gases.