A cylindrical sample of a biological product (10. mm in diameter and 18 mm in height) was exposed to a constant strain test. Assume that the stress in the sample can be described using Standard linear model. The axial load applied to the sample at time zero was 80. N and then after the infinitely long time the force equilibrated 20. N. The viscosity coefficient of the viscous element in the Maxwell arm is 7.50 x103 kPas, and the modulus of elasticity of the elastic element in the Maxwell arm is 15 kPa. Determine after what time the compression force will decrease to 36% of its original value and the modulus of elasticity of the elastic element in the equilibrium arm.

A cylindrical sample of a biological product (10. mm in diameter and 18 mm in height) was exposed to a constant strain test. Assume that the stress in the sample can be described using Standard linear model. The axial load applied to the sample at time zero was 80. N and then after the infinitely long time the force equilibrated 20. N. The viscosity coefficient of the viscous element in the Maxwell arm is 7.50 x103 kPas, and the modulus of elasticity of the elastic element in the Maxwell arm is 15 kPa. Determine after what time the compression force will decrease to 36% of its original value and the modulus of elasticity of the elastic element in the equilibrium arm.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A- Womersley number (a) of a human aorta is 20 and for the rabbit aorta is 17, the blood density is approximately the same across the species. The values of viscosity were 0.0035 Ns/m² for the human and 0.0040 Ns/m² for the rabbit. The diameter of the aorta is 2.0 cm for the man, and 0.7 cm for the rabbit, estimate the heart rate beats per minute (bpm) for both species
1. A capillary tube is being used to measure the viscosity of a Newtonian liquid. The tube has a 4-cm diameter and a length of 20 cm. Estimate the viscosity coefficient for the liquid if a pressure of 2.5 kPa is required to maintain a flow rate of 1 kg/s. The liquid density is 998 kg/m3 2. Calculate the viscosity of a fluid that would allow a pressure drop of 35 kPa over a 5 – m length of 3.4 in. stainless steel sanitary pipe if the fluid is flowing at 0.12 m3/hr and has a density of 1010 kg/m3. Assume laminar flow. 3. At 2 cm diameter, 5 cm long capillary-tube viscometer is being used to measure viscosity of 10 – Pa.s liquid food. Determine the pressure required for measurement when a flow rate of 1 kg/min is desired and ρ= 1000 kg/m3.
A linear (laminar) averagewall shear stress resistance of the form τ ≈ 8 μ V/D , whereμ is the fl uid viscosity. Find the differential equation fordV / dt and then solve for V ( t ), assuming an initial displacementz = z 0 , V = 0 at t = 0. The result should be a dampedoscillation tending toward z = 0.
Casson model often used to describe the shear stress vs. shear rate relationship in colloidal suspensions where particle aggregation might cause the measured viscosity to increase at low shear rates. shear stress τ and the appliedshear rate S were fitted to the Casson model as written as
For vane shear testing we may assume uniform, triangular or parabolic distribution of the shear stress along the vane ends. Assume the case of (i) Uniform, (ii) Triangular, and (iii) parabolic stress distributions and drive the equations relating the undrained shear strength Su to the applied torque T.
A pipe of diameter 2.5 m is required to transport an oil of sp.gr. 0.86 & viscosity 3×10- 2 poise at 3750 li/s. Tests were conducted on a 20cm diameter pipe using water at 20oC Find the velocity and rate of flow in the model. Viscosity of water at 20 m= 0.01poise.
Please help and answer completely, i will surely give a good feedback. Thank you. Refer to the picture attached. The following pressure, temperature and specific humidity measurementswere made from radiosonde soundings on day 11 of the Wangara PBLexperiment: A. Characterize the various layers on the basis of local and nonlocal stability and discuss the differences between the two. B. Estimate the height of the inversion base (zi), as well as the PBL height (h). Discuss the sensitivity of the latter to the near-surface temperature. Answer in the format of Given, Required, & Solution.
Alplas Plastics uses an extruder in which the barrel diameter = 0.4 m and length = 6.0 m. The extruder screw rotates at 65 rev/min; it has channel depth = 0.02 m and flight angle = 16°. The plastic melt has a shear viscosity = 85 Pa-s. Determine: (a) Qmax and pmax; (b) the shape factor Ks for a circular die opening in which Dd = 0.009 m and Ld = 0.03 m; and (c) the values of Q and p at the operating point
i. If you know that any strain gauge has a sensitivity towards temperature.In other words, any change in the temperature could also affect theresistance value. How can we get a correct reading from strain gaugesand get rid of the temperature effect?ii. In an AC LVDT system, measuring the output voltage alone gives anindication of the displacement from the center, but not the direction ofdisplacement. Explain why, and also explain a method for solving thisproblem.iii. In a vortex flow meter, there are many methods that could be used tomeasure the effect of vortices and measure the flow rate. Explain howvortices could occur in this flow meter, and explain three methods thatcould be used for measuring the effects of vortices in a vortex flowmeter.iv. Explain in details how can we use a capacitor to indicate the lever ofwater in a tank (use drawings and electrical diagram to elaborate on yourexplanation).Page 5 of 63v. Bimetallic strip could be used as a temperature detector. Explain…
Cell culture media is flowing through a cylindrical tube at a volumetric flow rate of 12 ml/s. The tube has a diameter of 0.8 cm and length of 12cm. Assume the viscosity of the media is 1.2 cP (0.0012 Pa s). a. What is the shear rate at the wall of the tube ? b. What is the shear rate at the centerline of the tube ? c. What is the shear stress at the wall of the tube ?
With free body diagram please thank you. Clear and complete solution please. 2. Benzene at 20 deg * C has a viscosity of 0.000651 Pa-s. What shear stress is required to deform this fluid at a strain rate of 4900 s-¹?
A tentative rule was given about tipping in Testing Experiment Table 8.4, where if a vertical line passing through the object's center of mass is within the object's area of support the object does not tip. According to the rule, the full box of crackers in the following experiment, which has a width of 13 cm and a height of 20 cm, was seen to tip at an angle of: θc=tan−1(13 cm/20 cm)=33∘θ According to the rule, at what angle will a box with the left half filled with crackers begin to tip? Assume the box is light-weight and that the contents remain in the configuration in