do fast A hypothetical metal alloy has a grain diameter of 2.4 x 102 mm. After a heat treatment at 575°C for 500 min, the grain diameter hasincreased to 4.6 x 10-2 mm. Compute the time required for a specimen of this same material (i.e., do = 2.4 x 10-2 mm) to achieve a graindiameter of 5.5 × 10-2 mm while being heated at 575°C. Assume the n grain diameter exponent has a value of 2.2.imin

Answered: A hypothetical metal alloy has a grain…

Understanding Business

12th Edition

ISBN:9781259929434

Author:William Nickels

Publisher:William Nickels

Chapter1: Taking Risks And Making Profits Within The Dynamic Business Environment

Section: Chapter Questions

Problem 1CE

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Consider 2.5 kg of austenite containing 0.65 wt% C, cooled to 726 ° C a)Is the steel hypereutectoid or hypoeutectoid b)What is the primary microconstituent (proeutectoid)phase? c)How many kilograms of total ferrite and cementite form? d)How many kilograms each of pearlite and the proeutectoid phase form? Weight percent carbon
T = -25°C A 0.5 m × 1 m double paned window is made of two silica glass panes 1 cm thick, with air in between. Under steady conditions, linear (constant gradient) Outdoors temperature profiles are found in both silica panes, as well as the air. If the room (and the inner surface of h=18Wm²K the inner glass pane) is at a temperature of 25°C, while outdoors it is -25°C with a convection coefficient of 18 W m² K-1, what is the rate of heat loss through the window? What is the rate of heat loss if the room temperature is decreased to 20°C? Finally, what is the rate of heat loss for a room temperature of 25°C, but with one of the panes (and the air) removed? 1 cm 1 cm Room Temperature, 25° C or 20º C 0.5 mm Air, k=0.024 W m¹ K¹ Silica glass, k = 0.90 W m³ K
Pressurized steam at 4 4 0 K flows through a long, thin-walled pipe of 0.64 m diameter. The pipe is enclosed in a concrete casing that is of square cross section and 1.45m on a side. The axis of the pipe is centered in the casing, and the outer surfaces of the casing are maintained at 340 K . What is the rate of heat loss per unit length of pipe?
The specifications for a gasket that installs between two engine parts calls for a thickness of 6.0 mm ± .2 mm. The standard deviation of the process is estimated to be 0.05 mm. The process is known to operate at a mean thickness of 6.1 mm What are the upper and lower specification limits for the gasket? What are the Cp and Cpk values for this process? Is this process capable of producing the desired part?
Please do not give solution in image formate thanku. The specification for a plastic liner for concrete highway projects calls for a thickness of 6.0 mm ± 0.1 mm. The standard deviation of the process is estimated to be 0.02 mm. The process is known to operate at a mean thickness of 6.03 mm. What is the Cp and Cpk for this process? Determine whether this process meet 3-sigma requirements, 6-sigma requirements, or doesn’t meet any requirements.
At Webster Chemical Company, lumps in the caulking compound could cause difficulties in dispensing a smooth bead from the tube. Even when the process is in control, an average of four lumps per tube of caulk will remain. Testing for the presence of lumps destroys the product, so an analyst takes random samples. The following results are obtained: Tube No. Lumps Tube No. Lumps Tube No. Lumps 1 6 5 6 9 5 2 5 6 4 10 0 3 0 7 1 11 9 4 4 8 6 12 2 Determine the c-chart two-sigma upper and lower control limits for this process. Is the process in statistical control?
do fast
3/4 roller chain is to transmit power from a 17-tooth drive sprocket to 34-tooth sprocket. Centers of the sprockets are 13 inches apart. Estimate the number of teeth in contact with the chain for the larger sprocket.
A part at Belleh Fontem Manufacturing requiresholes of size .5 ± 0.0 I inches. The drill bit has a s tated size of.5 ± 0.005 inches and wears at the rate of .00017 inches perhole drilled. Give the most and least number of holes that can bedrilled with one drill bit before it has to be replaced.
3. Meena Chavan Corp.’s computer chip production process yields DRAM chips with an average life of 1,800 hours and σ=100 hours. The tolerance upper and lower specification limits are 2,400 hours and 1,600 hours, respectively. Is this process capable of producing DRAM chips to specification?
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 Ohms each. To set up the machine and to create a control chart to be used throughout the run, 15 samples and their measured values are as follows: Sample Number Readings (in Ohms) 1 1010 991 985 986 2 995 996 1009 994 3 990 1003 1015 1008 4 1015 1020 1009 998 5 1013 1019 1005 993 6 994 1001 994 1005 7 989 992 982 1020 8 1001 986 996 996 9 1006 989 1005 1007 10 992 1007 1006 979 11 996 1006 997 989 12 1019 996 991 1011 13 981 991 989 1003 14 999 993 988 984 15 1013 1002 1005 992 Develop three-sigma appropriate control chart(s) from the chart(s) what comments can you make about the process? Explain and show work
While analyzing their annual sales data (liters of wine sold per year) for the past 30 years, a vineyard found that after taking four successive differences, the resulting data had a mean of 2458 liters and looked like a stationary process (e.g. white noise). If the actual data for the past four years were 2018 - 2134 liters, 2017 - 2403 liters, 2016 - 2076 liters, and 2015 - 2290 liters. What would be a reasonable forecast for sales in 2019? Explain.

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