美国留学申请：PS范文(机械工程专业)

2010-09-27 17:14:20 来源：留学E路通 字号：大 | 中 | 小 范文1：

Mechanical engineering is the foundation of industry. It plays a key role in the national economy. It’s broad field including general engineering, aeronautical, chemical and nuclear engineering, etc. Provides a sufficient room of choices for me to realize the dream of becoming a scientist or a mechanical engineer. It was with this fact in mind that I decided to choose mechanical engineering as the major field of study for both undergraduate and graduate career at Tsinghua University.

During nearly eight years of study at Tsinghua University, I completed a total of 47 courses in undergraduate study, 14 courses in graduate study. The major courses that interested me most included: Theoretical Mechanics, Strength of Materials, Elasticity and Plasticity Mechanical Analysis of Plastic Deformation Processes, Theory of Metal Forming, Computer Language and Programming, Mechanical Design, etc? After graduation, I entered the First Heaby Machinery Works (in northeast of China). During this period, I became familiar with the design and manufacturing of some heavy machines, thus furthering my interest in mechanical engineering. At the same time, I found that many good ideas of design could not be put into existence because of the backwardness in raw material quality and processing techniques. This fact impelled the related areas and me to concentrate my research interest on materials science and processing. Through careful survey, I selected a subject about the quality control of heavy disc forging and took it as my research subject for master degree. After over tow years of investigation, I finally made a great innovation in the forging process, making the end product rate increase from 50% to 90%. In the course of investigation and my later working after graduate study, I also found some problems that are common in mechanical industry. For example, how do cracks in products during hot metal working generate and

develop? How to avoid cracks? How do non-metallic inclusions affect the properties of materials? How to control the content, shape and distribution of inclusions in final products? Solution to these problems will improve the quality of many kinds of products. But they are often difficult to be solved because they include knowledge of many disciplines and require many new research methods. I feel that what I have learned is far from sufficient to tackle all the problems. Thus I have decided to continue my education by pursuing a doctoral degree in mechanical engineering in a highly industrialized country like the United States. I plan to complete my degree objective I 3 to 5 year and hope that I will be able to further my knowledge I areas including Solid Mechanics, Materials Science and Processes, CAD/CAM, etc? After completing my graduate study, I will return to contribute my learning to my country. I plan to work as a researcher of a teacher at an institute or a university. 范文2：

An experienced engineer of security printing with China’s Central Bank, I now would like to scale higher intellectual heights by pursuing Ph. D. studies in mechanical engineering at your university. I believe that my strong background in CAD has adequately prepared me to embark(从事) on this endeavor(努力).

I have been wonk（用功的学生） of China, a Chinese version of the Federal Reserve, at its unique research institute of security printing, with the responsibility of designing the Chinese currency and the machinery to produce it. By engaging me in a variety of projects, the job afforded me ample exposure to cutting-edge developments in computer technologies, particularly in CAD software. I have, for example, recently redeveloped a purchased CAD (Computer Aided Design) software to make it more suitable for our own purposes. By adding our own part/subassembly to the database and make our own drawing criteria, we have achieved dramatically better efficiency.

My job performance, which has won me professional respect from all of my colleagues, was achieved thanks to the strong background I acquired

as a student in computer science. My undergraduate GPA ranked first among the 63 students of classmates in mechanical department, for which I was awarded first-class and second-class prizes many times. My graduate GPA ranked among the top 4% of the 105 students in my year, which won me the “San Hao” scholarship every year during the three years of my graduate studies.

Unlike many other Chinese students, who are content with performing well in exams, I made a point of learning through my own hands-on experiences. In the Master’s program at the Beijing Institute of Printing, I gained an in-depth understanding of artificial intelligence, including expert system and genetic algorithm, especially in neural network. For my thesis, I programmed a multi-level BP neural network with C language to analyze my mathematical model, and applied much of my knowledge in optimization. I thus became able to program with a host of different computer languages, especially C++, with which I helped my graduate advisor to design a paper-cutting machine. To analyze the mechanism statically and dynamically, I programmed a software system to analyze and emulate it on screen. In undergraduate studies, I had often programmed with Fortran77 and the Basic language.

Upon the completion of my Master’s studies, I easily passed the doctoral record examination in CAD/CAM of Beijing University, one f the top universities in China. But I gave up the opportunity in order to gain more practical experience in the industry. The decision proved to be right, as it guaranteed me better access to sophisticated facilities, such as state-of-the-art personal computers. With the People’s Bank of China, I have thus accumulated solid expertise in many kinds of operating and application software systems, particularly in CAD. I now have a firm grip on the latest developments in computer science in China.

The challenges I met and the successes I achieved at the People’s Bank have not only endowed me with confidence but also fired off my desire to further improve myself. I have enjoyed high-quality and efficient production with the use of a kind of PC-based CAD software, MDT, developed