In a ready-mix plant, cylindrical samples are prepared and tested periodically to detect an
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- In a ready-mix plant, cylindrical samples are prepared and tested periodically to detect any mix problem and to ensure that the compressive strength is higher than the lower specification limit. The minimum target value was at 42.0 MPa. The following compressive strength data were collected:All in Mega-Pascal (MPa)38.3, 42.5, 39.6, 41.8, 42.5, 39.3, 41.2, 40.9, 39.8, 41.642.9, 43.4, 39.9, 44.7, 45.1, 43.9, 42.4, 41.7, 41.1, 42.1Calculate the Arithmetic Mean, Median, and Standard Deviation.A Brinell test is performed on a steel using a 1.31 in. diameter indenter with a load of 67275 lbs. A 0.75 in. Determine in indentation was measured on the surface of the steel. Determine: a) HBN (psi); b) tensile strength (psi)In a ready-mix plant, cylindrical samples are prepared and tested periodically to detect any mix problem and to ensure that the compressive strength is higher than the lower specification limit. The minimum target value was at 42.0 MPa. The following compressive strength data were collected: All in Mega-Pascal (MPa) 41.8, 38.3, 42.5, 39.6, 42.5, 39.3, 41.2, 40.9, 39.8, 41.6 42.9, 43.4, 39.9, 44.7, 45.1, 43.9, 42.4, 41.7, 41.1, 42.1 Calculate the Arithmetic Mean, Median, and Standard Deviation. (Non-anonymous question@) .
- The compound bar, composed of the three segments shown, is initially stress-free. Compute the stress in each material if the temperature drops 25°C. Assume that the walls do not yield and use the following data: 10. A (mm?) a (°C) E (GPa) Bronze segment 2000 19.0 x 10-6 83 Aluminum segment 1400 23.0 x 10-6 70 Steel segment 800 11.7x 10-6 200 SUMMARY OF ANSWERS Овronze MPa 800 mm -500 mm- 400 mm- Oalum MPa Osteel MPa Aluminum Steel Bronze10. The compound bar, composed of the three segments shown, is initially stress-free. Compute the stress in each material if the temperature drops 25°C. Assume that the walls do not yield and use the following data: A (mm²) a (FC) E (GPa) Bronze segment 2000 19.0 x 10- 83 Aluminum segment 1400 23.0 x 10 70 Steel segment 11.7x 10 SUMMARY OF ANSWERS s00 200 OBranze MPa - 800 mm - -500 mm- +400 mm→ MPa Oalum Osteel MPa Bronze Aluminum SteelA 150mm diameter cylindrical concrete specimen was tested for splitting tensile strength. The splitting tensile stress at failure is 4.14 MPa, what is the applied force in kN? The sample length is 300mm
- 1.40 In a ready-mix plant, cylindrical samples are prepared and tested periodically to detect any mix problem and to ensure that the compressive strength is higher than the lower specification limit. The minimum target value was set at 5,000 psi. The following compressive strength data were collected. Compressive Strength (psi) Compressive Strength (psi) Sample No. Sample No. 1 5595 11 6695 2 5139 12 5449 6359 13 5278 4 5192 14 6697 5 5188 15 5195 6. 5241 16 6021 7 5964 17 5320 5875 18 5657 6155 19 6595 10 5115 20 5235 a. Calculate the mean, standard deviation, and the coefficient of variation of the data. b. Using a spreadsheet program, create a control chart for these data showing the target value and the lower specification limit. Is the plant production meeting the specification requirement? If not, comment on possible rea- sons. Comment on the data scatter.Situation 3 A compressive strength test were conducted to the following cylinder; Cylinder 1 3015 psi Cylinder 2 2950 psi Cylinder 3 3253 psi Cylinder 4 3004 psi Cylinder 5 3031 psi It is observed that the size of the cylinder is 6% in x 12" which is much bigger that the standard cylinder specimen. 1. What would be the reported compressive strength for each cylinder. 2. What is the average compressive strength? 3. If the target compressive strength at: 3 days is 3000 psi, What can you say about the test result?What is unconfined compressive strength test, which triaxial compression test is similar to shows? If the maximum compressive stress value obtained from this test is qu, this test Show the shear strength of the specimen using the Mohr tensile circle. Also, short Why is the unconfined compressive strength of the Comment on its use. I will understand better if you type the answers with the keyboard thank you.
- A center point loading is used to test concrete for flexure. The sample is 150mm x 150mm and has a clear span of 600mm. The sample failed when the load applied is 100,000N. What is the flexure stress at failure in MPa?The breaking strength of a 15.0 mm diameter bar was 540 MPa and the cross-sectional diameter after rupture was measured as 12.3 mm. Calculate the ductility in percent shrinkage and the actual stress at break.A cylindrical brass specimen having a diameter of 1.10 cm and initial gage length of 4.04 cm is subjected to tensile strength test. The load-deformation values are given in the below table. The final length and final diameter of the specimen were measured as 4.33 cm and 0.92 cm, respectively. Complete the below table and plot true stress-true strain diagram and determine. Yield strength at 0.2 % off-set method. Poisson’s ratio of the material at 135 kN load (assume that there is no volume change) If the material were unloaded from 175 kN, what would be its final length? 1 nm=1*10-9 m, 1 0A=10-10 m