In a ready-mix plant, cylindrical samples are prepared and tested periodically to detect any mix problem and ensure that the compressive strength is higher than the lowest specification limit. The minimum target value was set at 4000 psi. The following compressive strength were collected in below Table. Sample Comp. No 1 2 3 4 +36769 Strength (psi) 4914 4732 5670 4310 6110 4316 5240 4950 5230 Sample No 10 II 12 13 14 15 16 17 18 Comp. Strength (psi) 4190 5770 4524 4056 5772 4270 5096 4670 5174 Sample No 19 20 21 22 23 24 25 Comp. Strength (psi) 5434 3692 4510 3680 4100 3680 3910 a) Calculate the mean and the standard deviation of the data. b) Using a spreadsheet program create a chart (strength-sample) for these data showing à target value and the lower specification limit. Is the plant production meet the specification requirement, and explain the reason from the chart?

In a ready-mix plant, cylindrical samples are prepared and tested periodically to detect any mix problem and ensure that the compressive strength is higher than the lowest specification limit. The minimum target value was set at 4000 psi. The following compressive strength were collected in below Table. Sample Comp. No 1 2 3 4 +36769 Strength (psi) 4914 4732 5670 4310 6110 4316 5240 4950 5230 Sample No 10 II 12 13 14 15 16 17 18 Comp. Strength (psi) 4190 5770 4524 4056 5772 4270 5096 4670 5174 Sample No 19 20 21 22 23 24 25 Comp. Strength (psi) 5434 3692 4510 3680 4100 3680 3910 a) Calculate the mean and the standard deviation of the data. b) Using a spreadsheet program create a chart (strength-sample) for these data showing à target value and the lower specification limit. Is the plant production meet the specification requirement, and explain the reason from the chart?

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter11: Fracture And Fatigue

Section: Chapter Questions

Problem 11.4P

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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.
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 compressive strength data shown in Table were collected. 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 lower specification limit. Is the plant production meeting the specification requirement? If not, comment on possible reasons. Comment on the data scatter.
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.
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@) .
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 27.6 MPa. The compressive strength data shown in Table P7.48 were collected. Use one system of units only as specified by the instructor. 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 reasons. Comment on the data scatter.
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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)
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Show complete process. 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, 41.6 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 Devi ation.
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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?