EXPERIMENTAL PROCEDURE The experiments were performed according to the Box-Behnken design which is a kind of response surface methodology. It is well known that response surface methodology or RSM is a collection of mathematical and statistical techniques useful for the modeling and analysis of problems in which a response of interest is influenced by several variables and the objective is to optimize this response. First, the material is cleaned to remove the oil, grease, dust, rust or any substance from the surface of material that would provide good adhesion of the photo resist. PCM process beings from engineering drawing or sketch that defines the precise characteristics of the part. The utilize CAD system and laser plot …show more content…
Response surface methodology method was used to determine optimal machining parameters for maximum material removal rate, etch factor and minimum surface roughness, undercut with less etching time. Response surface methodology (RSM) is a collection of mathematical and statistical techniques for empirical model building. By careful design of experiments, the objective is to optimize a response (output variable) which is influenced by several independent variables (input variables). Response Surface Methodology …show more content…
Originally, RSM was developed to model experimental responses (Box and Draper, 1987), and then migrated into the modeling of numerical experiments. The difference is in the type of error generated by the response. In physical experiments, inaccuracy can be due, for example to measurement errors while in computer experiments numerical noise is a result of incomplete convergence of iterative processes, round-off errors or the discrete representation of continuous physical phenomena. In RSM, the errors are assumed to be random. The response can be represented graphically, either in the three-dimensional space or as contour plots that help visualize the shape of the response surface. Contours are curves of constant response drawn in the xi, xj plane keeping all other variables fixed. Each contour corresponds to a particular height of the response surface. With this technique, the effect of two or more factors on quality criteria can be investigated and optimum values are obtained. In RSM design there should be at least three levels for each factor. The design expert (DE 9) software was used to develop the experiment plan for RSM. Table2. Shows the level of input
Career Episode One Introduction C.E 1.1 I completed this collective project in the optoelectronic information laboratory of University of Shanghai for Science and Technology from July to October 2011 when learning the photoelectric detection technology. As the team leader, I completed the project design, team organization, actual operation and other core work. Background C.E 1.2 Upon completion of the basic course research in the freshman and sophomore year, my teacher Ling Chen believed that he should enhanced our practical ability, so he provided us with the topic of the research on lubricating oil film thickness precision detection technology of the sliding bearing based on the principle of the optical fiber displacement sensor. Our research object was water film thickness detection.
For this experiment we utilized varying forms of Ohm’s law (V=IR), rules for resistors in series (Rtotal=R1+R2+…) and parallels (1/Rt=1/R1+1/R2+⋯), and Kirchhoff’s Junction Rule (ΣIi=0). For these models we assumed that the DMM’s produced accurate readings
[26]. The insulation resistance is measured using a mega ohm bridge or a mega ohm meter. An applied DC voltage is used to measure the insulation resistance of the connectors in kΩ, MΩ, or GΩ. If the connector is going to operate at special conditions, then the environmental requirements needs to be incorporated. The electrical insulation begins to age as soon as it is installed, this deterioration can affect the performance. It is used as quality control during production of the connector, preventive maintenance tasks and as a troubleshooting
In Figs. (\ref{fig:NC3Mont.eps}-\ref{fig:NC6Mont.eps}), the results of the Monte Carlo analysis is presented along with the result obtained for the central values of the parameter. It is observed that for the form factors $C_3^{N \Delta}(Q^2)$, $C_4^{N \Delta}(Q^2)$ and $C_6^{N \Delta}(Q^2)$, Monte Carlo analysis and the prediction for the central values agree at large values of $Q^2$, but deviate from each other for small values of
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Will you be using a between-subjects or within-subjects design? If you have more than one IV, you need to answer this question separately for each IV. I will be using within subjects design. The participants will be given the same treatment during the experiment.
U6: Establishing audiences Quantitative: Quantitative research is a form of research where people are asked something with a simple answer that can be quantified afterwards to represent a larger group. This type of research has simpler answers (yes or no) than qualitative which has more complicated answer (such as a paragraph of text) that can not be quantified but tells a lot more information with 1 answer. Quantitative research is quicker and easier to gather result. Quantitative research can be used for things such as seeing how much of the population in the UK like corn flakes. They would do this by making a survey with a simple answers for the person being surveyed to choose from, the people doing the survey would be people chosen at random
Record the amount of absorbance by converting transmittance every 5 minutes for a total of 20 minutes. Repeat all of these steps for the cantaloupe, banana, replacing the blank each time to recalibrate the spectrophotometer. After recording all the percent transmittance value, the data was then converted into absorbance value by using the absorbance conversion table. The information was placed on a plotted graph
To establish the projects successfulness a set of tests were conducted, these tests observe and analyse every part of the prototype setup. The results to these tests are compared against the project aim and consequently are used to formulate a conclusion top the project. As set out in chapters 2 and 3 both the electrical/electronic and mechanical systems must meet a set of requirements; these requirements are based on the project objectives and deliverables. The tests conducted measure the prototypes adherence to these requirements, the tests provide data that can be formulated and examined to establish the functionality of each system. There are three types of tests carried out within this project, preliminary testing, functional testing and characterisation testing; each of type of tests examines the system in a greater depth than the preceding test type with characterisation testing being the most in-depth.
Give details so I know you understand the type of research design. a. The research design that seems best fit would be an experimental
In this lab there were five different stations. For the first station we had to determine an unknown mass and the percent difference. To find the unknown mass we set up the equation Fleft*dleft = Fright*dright. We then substituted in the values (26.05 N * 41cm = 34cm * x N) and solved for Fright to get (320.5g). To determine the percent difference we used the formula Abs[((Value 1 - Value 2) / average of 1 & 2) * 100], substituted the values (Abs[((320.5 - 315.8) /
This detailed design should be easily converted to programming logic. It is at this stage the technology specifications for implementing the solution, logical structure of the application, design of WebPages, database designs etc are finalized. Test plans and test cases for the application are devised at this stage. Implementation phase – 5 weeks This stage involves implementing the design documentation using the technologies and platforms decided .For
Use your results in Data Table 2 to support your answer.
Utilizing the method that the experimenters have come up with, the procedure isolates the variable being tested, which is the paper towel brand. By not changing other aspects of the procedure, other factors have a lower chance of affecting the accurate results of the answer to the main question. Additionally, the method is a quick and simple experiment, causing no use of excessive time than the provided duration. Within the first minutes of the experiment, the experimenters and the advisor realized that the method did not really provide accurate results due to merely estimating the numbers without the use of a graduated cylinder. Changing that aspect of the procedure by using a graduated cylinder to measure the amounts of water instead helped
In Laurie Ann Guerrero’s “Ode To My Boots” it is clear that the poet is addressing how she relates to her boots. The poet details how her boots give her a sense of courage, power, strength, and the ability to be acknowledged. Throughout the poem, the author praises the boots that she wears because it makes her feel empowered. Almost to the point as if she is having a conversation with them. Hence, this unique quality distinguishes and enables the poets’ ability to be able to compare herself to the power of boots.