Open Access Theses and Dissertations

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You searched for +publisher:"NSYSU" +contributor:("CHChien"). Showing records 1 – 3 of 3 total matches.

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NSYSU

1. Hu, Chun-Chi. Research of the relation between the parameter of LGP injection and the ripple phenomena.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2008, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108108-173515 

Recently, the ripple phenomena of liquid crystal display module were occurred frequently after burning machine test. The phenomena were mainly caused by the non-uniformity of the flatness of light guide plate. But, it is difficult to detect the ripple phenomena when the light guide plate is in a free state. It is usually can be detected until the burning machine test of liquid crystal display module was finished. But it will cost massive manpower and the physical resource wasting in this process. In this study, the through analyses of flatness variations of light guide plate in its free state, in the back light module, and in the liquid crystal display module after the burning machine test, respectively, were executed. Also, the effects of variations of process factors of a light guide plate on the ripple phenomena were studied. It is hoped to achieve the purpose that one can control the flatness of light guide plate in the initial stage so that the ripple phenomena will no longer occur. Advisors/Committee Members: rhsun (chair), chchien (committee member), taiping (chair).

Subjects/Keywords: Ripple; LGP

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Hu, C. (2008). Research of the relation between the parameter of LGP injection and the ripple phenomena. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108108-173515

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Hu, Chun-Chi. “Research of the relation between the parameter of LGP injection and the ripple phenomena.” 2008. Thesis, NSYSU. Accessed March 04, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108108-173515.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Hu, Chun-Chi. “Research of the relation between the parameter of LGP injection and the ripple phenomena.” 2008. Web. 04 Mar 2021.

Vancouver:

Hu C. Research of the relation between the parameter of LGP injection and the ripple phenomena. [Internet] [Thesis]. NSYSU; 2008. [cited 2021 Mar 04]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108108-173515.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hu C. Research of the relation between the parameter of LGP injection and the ripple phenomena. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108108-173515

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


NSYSU

2. Han Tsai, Cing. The Temperature Effects of Friction Properties Analysis in Single Crystalline and Polycrystalline Metal by Molecular Dynamics Simulation.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2014, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727114-154544 

The use of solving simulations using the finite element method has been developed over a long time, and mature software , such as ANSYS, MSC, Marc, and other packages, is available. Some of the software does not include enough material properties, and especially too few properties that are relate to temperature. Accordingly the results of simulations not close to the reality. The study uses the LAMMPS, which is software for simulating molecular dynamics, to simulate the experiments on the friction. The coefficient of the kinetic friction at high temperature is thus obtained. This work successfully developed a complete calculating package of coefficient of the kinetic friction. The user can change the metal and the temperature. Comparing experimental at room temperature in the literature with the results of the simulation yields a, single crystalline model error of 7.66% and a polycrystalline model error of 8.33%. This investigation discusses the effects of the frictional properties by copper on copper at various friction velocities, depth of ploughing and temperatures. In recent years, a few people have studied the polycrystalline model. In this work, not only a single crystalline model but also polycrystalline model is developed and utilized to describe the real structure of a material. The results obtained herein yield a depth of ploughing of 2.50 nm, a simulated temperature of 293.0 K and an increase in tip velocity from 100.0 m/s to 400.0 m/s. The coefficient of kinetic friction of the single crystalline structure decreased from 2.30 to 1.24 and that of the polycrystalline structure decreased from 1.86 to 1.44. When the tip velocity is 100 m/s, temperature is 293.0 K and the depth of ploughing increased from 1.00 nm to 2.50 nm. The coefficient of kinetic friction of the single crystal structure decreased from 4.30 to 2.30 and that of the polycrystalline structure is decreased from 2.25 to 1.86. Finally, when the tip velocity is 100 m/s, the depth of ploughing is 2.50 nm and temperature increased from 293.0 K to 1000.0 K. The single crystal structure decreased from 2.30 to 1.38 and that of the polycrystalline structure is maintained between 1.77 to 1.90. Advisors/Committee Members: CHChien (committee member), Jung-Hung Sun (chair), Chung-Ting Wang (chair), T. N. Shiau (chair).

Subjects/Keywords: molecular dynamics; temperature effects; polycrystalline structure; coefficient of kinetic friction; single crystal structure

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Han Tsai, C. (2014). The Temperature Effects of Friction Properties Analysis in Single Crystalline and Polycrystalline Metal by Molecular Dynamics Simulation. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727114-154544

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Han Tsai, Cing. “The Temperature Effects of Friction Properties Analysis in Single Crystalline and Polycrystalline Metal by Molecular Dynamics Simulation.” 2014. Thesis, NSYSU. Accessed March 04, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727114-154544.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Han Tsai, Cing. “The Temperature Effects of Friction Properties Analysis in Single Crystalline and Polycrystalline Metal by Molecular Dynamics Simulation.” 2014. Web. 04 Mar 2021.

Vancouver:

Han Tsai C. The Temperature Effects of Friction Properties Analysis in Single Crystalline and Polycrystalline Metal by Molecular Dynamics Simulation. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Mar 04]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727114-154544.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Han Tsai C. The Temperature Effects of Friction Properties Analysis in Single Crystalline and Polycrystalline Metal by Molecular Dynamics Simulation. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727114-154544

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


NSYSU

3. Lee, Yu-jen. Determination of Piezoelectric Parameters from Measured Natural Frequencies of a Piezoelectric Beam.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2004, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0831104-224324 

In this thesis, the feasibility of inverse evaluation of piezoelectric parameters by using piezoelectric beamâs natural frequencies is presented. Generally, all the piezoelectric parameters are not measured simultaneously. In other words, the interactive effects between the piezoelectricity and strain are not all included. The piezoelectric beamâs natural frequencies are analyzed by the inverse evaluation of piezoelectric parameters associated with the optimization algorithm. The dynamic model for piezoelectric beam is proposed by using Hamiltonâs principle in this study. The corresponding eigenvalue problems of different piezoelectric beams are formulated and solved by employing differential quadrature method (DQM). The genetic optimization algorithm is employed to optimize all piezoelectric parameters from the measured natural frequencies. Optimization of piezoelectric parameters of piezoelectric beam under the boundary conditions of fix-fix ends and fix-free ends are investigated. The robustness of program is also demonstrated through several numerical examples. The results demonstrate the method of this study applied to determine piezoelectric parameters by using natural frequencies is feasible and practicable. Advisors/Committee Members: YCTsai (chair), CHChien (chair), DMTsay (chair), JHKuang (committee member), Yung-chuan Chen (chair).

Subjects/Keywords: Optimization; Piezoelectric Parameters

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Lee, Y. (2004). Determination of Piezoelectric Parameters from Measured Natural Frequencies of a Piezoelectric Beam. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0831104-224324

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Lee, Yu-jen. “Determination of Piezoelectric Parameters from Measured Natural Frequencies of a Piezoelectric Beam.” 2004. Thesis, NSYSU. Accessed March 04, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0831104-224324.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Lee, Yu-jen. “Determination of Piezoelectric Parameters from Measured Natural Frequencies of a Piezoelectric Beam.” 2004. Web. 04 Mar 2021.

Vancouver:

Lee Y. Determination of Piezoelectric Parameters from Measured Natural Frequencies of a Piezoelectric Beam. [Internet] [Thesis]. NSYSU; 2004. [cited 2021 Mar 04]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0831104-224324.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lee Y. Determination of Piezoelectric Parameters from Measured Natural Frequencies of a Piezoelectric Beam. [Thesis]. NSYSU; 2004. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0831104-224324

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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