Dimensional analysis is routinely used to check the plausibility of derived equations and computations. It is also used to form reasonable hypotheses about complex physical situations that can be tested by experiment or by more developed theories of the phenomena, and to categorize types of physical quantities and units based on their relations to or dependence on other units, or their dimensions if any. In physics and all science, dimensional analysis is the practice of checking relations among physical quantities by identifying their dimensions. The dimension of any physical quantity is the combination of the basic physical dimensions that compose it. Some fundamental physical dimensions are length, mass, time, and electric charge. All other physical quantities can be expressed in terms of these fundamental physical dimensions. Detailed discussion of the dimensional analysis is depicted in the chapter on dimensional analysis.
For the present investigation the various process variables for structural subassembly manufacturing and the corresponding dimensional indices as well as unit of measurement are worked out. Dimensional analysis is carried out to formulate dimensional equations, ensuing relationship between dependent Pie terms and independent Pie terms.
4.11 Formulation of Pie terms for independent variables:
Various independent variables are grouped based on logical thinking by considering the similarities between variables. The groups are then used for formulation of Pie terms. One such identified group of variable belongs to the anthropometric data of operator. It is with alleviate to create the group of parameters such as body dimensions of the operator. So the first Pie term is related to anthropometric data of the o...
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...Length ( mm)
L
In terms of MLT Indices
Π6 = (M0L1T0 x M0L1T0 )
( M0L1T0 x M0L1T0)
Breadth ( mm)
B
Thickness (mm)
T
Part Weight (gm)
Wt
Machinable length
Mc.len
Machine criticality
Mc_criticality
4.12 Formulation of Pie terms for dependent variables:
The factors are arranged in numerator and denominator so as to cancel off the units and make it dimensionless, Pie term related to cycle time required for activity:
Similarly factors are arranged for human energy spent in doing the activity:
Π8 = Pulse ÷ rmvbits
Table 4.15: Description of Pi terms for dependent variables
Pi term related to Cycle time
Cycle time
Machine operation time
Tc
To
In terms of MLT Indices
Π7 = ( M0L0T1 )
( M0L0T1 )
Pi term related to Human energy input
Pulse
rmvbits
Pulse
rmvbits
Π8 = Pulse ÷ rmvbits
In terms of MLT Indices
Π8 = ( M0L0T0 )
( M0L0T0 )
In today’s operational management arena, there are certain expectations from a managerial aspect that must be met in order to be successful. A comprehensive look at the Space Age Furniture Company will show exactly what the Materials Requirement Planning (MRP) calculations are for this company at present time and then take the information given in order to properly suggest ways to improve the sub-assemblies. In addition, there will be an analysis on the trade-offs between the overtime and inventory costs. A calculation will be made on the new MRP that will improve the base MRP. This paper will also compare and contrast the types of production processing to include the job shop, batch, repetitive, or continuous, and determine which the primary mode of operation should be and exactly why. A detailed description on how management can keep track of the job status and location during production will also be addressed. Finally, there will be a recommendation on they type of changes that need to occur that will be beneficial to the company and at the same time add value to the customer. This paper will conclude with summary of the major points.
((Max heart rate - resting heart rate) x Percentage of intensity) + resting heart rate
The purpose of this lab was to determine the density of water and an unknown liquid, along with a rectangular solid and an irregular shaped solid. In this lab, the relative density was calculated and then used to make an educated guess on the substance. Density is the relationship between the mass of a substance and the amount of space taken up. This measurement is influenced by the mass of atoms, the size, and how they are arranged. The density of the four objects was determined by using the mass (g) and volume (mL or c3). Mass is the property of matter that measures its resistance to acceleration. In addition, volume is the amount of space that a substance or object occupies. Finally, the mass (g) was divided by the volume (mL or c3) to find the final density (g/mL or c3).
In additive manufacturing, parts are produced by slicing a CAD model into thin layers and then depositing material one layer at a time to create the 3D part. While current methods are very precise and have high resolutions, I have identified 3 main limitations of additive manufacturing.
* Age of the person exercising * level of fitness and recovery rate * gender of candidate * temperature * amount of recovery time KEY VARIABLE: - The variable that I will be using is the duration of exercise, this is because it is easy to measure against any candidate and get a correct accurate reading from it. If I chose the type of exercise I will get readings that might not be correct because some types of exercises are
This concept is taken from Block 4, Module 11 which is entitled as ‘Assessment of musculoskeletal system’.
The main reason the metric system is known for its simplicity is because there is only unit of measurement or a base unit for each type of measured quantity measured; length mass, weight, etc… There are a few base units in the metric system but the most common ones which are used are the meter, gram and liter. As an example if ...
Kirkpatrick, Larry, and Gerald F. Wheeler. Physics: A World View. 4th ed. Orlando: Harcourt College Publishers, 2001.
Over the third quarter of physical science we have discussed heat, energy, electricity and magnetism. I have decided to do my paper over these four topics. If you have any questions please hold them till the end.
In geometry the three dimensions are known as length, width and height or any three perpendicular directions can act as 3D. The basic three dimensional shapes are listed below. In online students can get the help about three dimensional shapes. Students can get the formulas and example problems in online. In this article we shall see how to calculate the volume and surface area of three dimensional shapes.
2) Fundamentals of Physics Extended: Fifth Edition. David Hanley, Robert Resnick, Jearl Walker. Published by John Wiley & Sons, Inc, New York, Chichester, Brisbane, Toronto, Singapore. 1997.
The biggest question in this whole theory is why a young up-and-coming physicist would risk his career on such an elaborate thought. As all physicists know, a dimension "is an expression for a derived physical quantity in terms of fundamental quantities such as mass, length, or time, raised to the appropriate power (acceleration, for example, having the dimension of length × time -2)"(http://www.merriam-webster.com/). Also, physicists have to know that a universe is "commonly defined as the totality of existence, including planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy"(http://www.merriam-webster.com/). This radical new idea could explain why quantum matter behaves so eradically. The most undiscovered subject of science is quantum level(http://www.howstuffworks.com/).
Kirkpatrick, Larry D. and Gerald F. Wheeler. Physics: A World View, 4th ed. Orlando, FL. Harcourt College Publishers: 2001. p- 365-71
The importance of physics not only lies in the discoveries of the natural world, but in the technology in our modern lives. Today we use many gadgets in our everyday tasks, which act as convenient aids to all of our needs. Some of these little novelties are cell phones, radios, computers, lasers used in eye surgery, fiber optics used in phone lines, calculators, hearing aids, and even global positioning systems.
Computer integrated manufacturing is a relatively new technology arising from the application of many computer science sub disciplines to support the manufacturing enterprise. The technology of CIM emphasizes that all aspects of manufacturing should be not only computerized as much as possible but also linked together via a computer communication network into an integrated whole. In short, CIM has the potential to enable manufacturers to build cheaper, higher-quality products and thus improve their competitiveness.