A jewel case for a compact disc is made from polycarbonate ($2.20 per lb) by a thermoplastic molding process. Each CD case uses 20 grams of plastic. The parts will be made in a 10-cavity mold that makes 1400 parts per hour at an operating cost of $20 per hour. Manufacturing ovehead is 40%. Since the parts ae sold in large lots, the G&A expenses are a low 15%. Profit is 10%. What is the estimated selling price for each CD case?
Solutions:
jewel case = 20 gram ($ 2.20/lb)
OH = 40%
G&A = 15%
Profit = 10%
1 lb = 454 gram
1 gram = 2.2x10^-3...
20131222
20131221
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Assignment
17.4 Manufacturing Cost and Selling Price for a Turbine
A manufacturer of a small hydraulic turbine has the annual cost data
given. Calculate the manufacturing cost and the selling price for the turbine.
Raw material and components costs $2,150,000
Direct labor ...
Posted on 09:53 by DD4U
20131220
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Solution:
Adjustment for the cost of the different size or capacity of the cyclone dust collector need to be purchased can not be calculated directly. Note that while the new units has 10 times the capacity as the unit purchased in 1985 will cost 10X more, because of economy of scale. However, the purchase cost will have increased because of inflation in the 27 years since it was purchased in 1985. Assuming cost inflation or 5 % per year, the original cost of $35,000 is now equivalent to
new cost for the 100 ft^3/min = [$35,000 x 5%] + $35,000...
Posted on 21:04 by DD4U
20131218
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Which material property would be selected as guide in material selection if the chief performance characteristics of the component was:
PERFORMANCE CHARACTERISTICS
MATERIAL PROPERTY
Strength
in Bending
Tensile
Strength
Resistance
to Twisting
Hardness
The
Ability of a Sheet Material to be Stretched into a Complex Curvature
Ductility
Ability
to Resist Fracture from Cracks at Low Temperatures
Malleability
Ability
to Resist Shattering if Dropped On the Floor
Toughness
...
Posted on 18:27 by DD4U
20131216
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Failure
Mode and Effects Analysis (FMEA)
Failure mode and effects
analysis (FMEA) is a team – based methodology for identifying potential
problems with the new or existing designs. It is the first step of a system
reliability study. FMEA is the core task in reliability engineering, safety
engineering, and quality engineering. FMEA involves reviewing as many
components, assemblies, and subsystem as possible to identify failure modes,
and their causes...
Posted on 04:41 by DD4U
20131215
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Normal or conventional fingernail clipper is consisting with the supporting shaft, upper and lower steel plate, and pressurizing bar. However, for some modification the design had been improvised for more aesthetic value. Casing and magnifying glass had been the additional parts into the new design of fingernail clipper. The casing is purposely...
Posted on 22:48 by DD4U
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