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Week 14 - Conclusion

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As a conclusion , there are few recommendations for future work on development of eddy current as sensor to detect metal crack. There is some point that need to be improve and upgrade incase the simulation work perfectly as a mention above.   Additional research needs to be done on different types of metals which will make the simulation be more perfected which can change depends on materials use. Since there some flaws with my project, which I can’t detect the value of current with or without crack. Maybe there are need some research with COMSOL Multiphysics or need to add more study which consist of frequency domain and coil geometry analysis. When the simulation is perfected, then we can move to the next step which hardware implementation.  To meet the specification of what industry needed, hardware implementation needs to be done with accurate data result with while testing to inspect the metal flaws or any metal crack that occur on most industrial sector. There will ...
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Week 13 - Presentation Video of Project

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  On this week , I presented about my project which I develop since BDP 1.
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Week 12-Finalize work

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On this last week , I complete the modelling drawing and do some simulation about magnetic vector potential which will put in the report.This is to potray the image of magnetic flux against the eddy current in the simulation.                                  Figure 1:Magnetic Vector Potential                                                 Figure 2:The power dissipation of plate with no crack. The redline on plate is shown that the heat trap on plate which resulted crack will happen due to heat trap.
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Week 11-Rebuild

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            After several attempt and re-do of the simulation , finally , I able to display the output with generate magnetic flux and power dissipated in plate, the solution I try recenter the edge current which it's in the middle with boundary condition.The problem may occur because of there is no gap between boundary condition outer layer and plate.Since by default is set by 0.5mm which mean there gap between must not closer than 0.5mm.After changing the placement of plate , I able to generate the output. Power dissipation on different types of crack. Figure 1 :Straight Line Figure 2:Zig-Zag Figure 3:Parallel lines          
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Week 10-Troubleshoot [No graph display]

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       On this week , I try to re-do the simulation by changing materials that may affected result which generate no output.I also try change the size of minimum element size since I assume the minimum value of mesh may be affected of no magnetic flux numb. Figure 1:Plate mesh size changing to 0.1 , default is infinite.                                  Figure 2:Boundary condition mesh size change to 0.2, default is infinite.                                                                     Figure 3:Error found due to limitation geometry sizes.
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Week 9 - Reduce quality of mesh

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          So on this week , I do some troubleshoot which I try to reduce quality of mesh.By reducing the number of mesh into maximum element size by 0.8mm for size plate mesh.Since at first , I set 0.5mm which result to error because of too much mesh quality because of the size of mesh is decrease.The size of maximum element size is actually important because it will affected the quality mesh. Figure 1:Mesh size for plate                                                                    Figure 2:Mesh size for boundary condition      Since the size play big role for mesh quality , so I decided to increase the size so it will generate the boundaries more smaller compare to older mesh.This will decrease the time to complete of computation.After the...
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Week 8 - Updating version COMSOL.

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          So on this week , I do some troubleshoot with my simulation that can't generate the result which happen because of lack of LU factorization, I do research on website and found that try use another version of COMSOL which may be help , So below the result that I get.                                                                                                                                                                        Figure 1:Mesh quality ...
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