Answer :
A Foley catheter is an indwelling urinary catheter that has an inflatable mechanism to keep it inside the bladder. The catheter consists of two sections: the tubing section and the balloon section.
a) For the tubing section of the inflatable mechanism, the question asks us to calculate the maximum stress, σθθ, with an inflation pressure of 1KPa. To calculate this, we need to use the formula for stress, which is defined as the force divided by the cross-sectional area. The cross-sectional area of the tubing section can be calculated using the formula for the area of a hollow cylinder: A = π(r^2 - R^2), where r is the outer radius and R is the inner radius. In this case, the outer diameter of the tubing section is given as 2 mm, so the outer radius is 1 mm.
Again, we can use the formula for the area of a hollow cylinder to calculate the cross-sectional area. c) Finally, the question asks us to calculate the strain, εθθ, in the balloon section assuming LEHI material properties with E=50 MRa and ν=0.33. To calculate the strain, we can use the formula ε = σ/E, where σ is the stress and E is the modulus of elasticity. In summary, the question asks us to calculate the maximum stress, σθθ, in the tubing section and the balloon section of a Foley catheter, as well as the strain, εθθ, in the balloon section.
Learn more about indwelling urinary catheter here:https://brainly.com/question/27961078
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