Some international (e.g., ISO) standards become national standards. Give one example, citing the original standard and its national counterpart.

Which is more important to you– model accuracy, or model performance?

Five engineers measure the thickness of a slab using a meter stick and a vernier caliper. One engineer got a thickness of 4.3 cm ± 0.1 cm using a meter stick, the other four engineers measured a thickness of (a) 4.32 cm ± 0.01 cm, (b) 4.31 cm ± 0.01 cm, (c) 4.24 cm ± 0.01 cm, and (d) 4.43 cm ± 0.01 cm respectively using the caliper. Which of these four measurements made by the four engineers agree with the measurement obtained by the engineer that used a meter stick? Only a (b) and (c) (c) and (d) (a), (b), and (c) none of these

State the frameworks of the International Standards, Primary Standards and Secondary Standards of measurement.

25000 bolts are going to be used to fix a certain structure. The bolts have a mean fatigue life of 10000 days with a standard deviation of 2000 days under heavy dynamic loading conditions.What is the probability that a bolt will fail between 8250 and 12500 days of use?

The following data were recorded during the tensile test of a test specimen with a diameter of 12.8 mm. The gage length is 50.8 mm. The given data are as follow; Given: Test specimen material: Aluminum Diameter of test specimen: Do = 12.8 mm Length of test specimen: Lo = 50.8 mm Force and Elongation data for test specimen Assumptions: 1. The given data is accurate and the material is isotropic 2. The direction of applied force is parallel to the length of the cylinder Requirement: To interpret and plot the stress Vs Strain curve for a given specimen DATA: LENGTH, mm STRESS, MPa LOAD, N 0 50.8 7 330 50.851 15 100 50.902 23 100 50.952 30 400 51.003 34 400 51.054 38 400 51.308 41 300 51.816 44 800 52.832 46 200 53.848 47 300 54.864 47 500 55.88 36 100 56.896 44 800 57.658 42 600 58.42 36 400 59.182 STRAIN

Please all steps

Mechanical Engineering xyz= 703 Stress, ksi (log) 72 49 35 28 10³ 8 x 10³1 10¹ 401 X 8't 49 ksi 10 ksi 401 X 9'1 35 ksi 28 ksi 105 Cycles (log) 106 19.8 The provided S-N curve shows the fatigue strength of a ferrous component with unknown geometry. 107 Given the following duty record, how much life is consumed at each stress level? 60 ksi 500 cycles 2000 cycles (600 000 + XYZ*100) cycles (15000 + XYZ) cycles 40000 cycles

8. In developing measuring instruments, the specific questions, scales, and other devices are specified. This is under what process? a. concept development C. selection of indicators b. specification of concept dimensions d. formation of index

Engineering materials