2008 GSW Proceedings最新文献_第8页

Repair of Stiction Failed MEMS Using Structural Vibrations 利用结构振动修复粘滞故障的MEMS

2008 GSW Proceedings Pub Date : 1900-01-01 DOI: 10.1115/IMECE2007-43622

D. Goettler, Amit Savkar, K. D. Murphy, Z. Leseman

{"title":"Repair of Stiction Failed MEMS Using Structural Vibrations","authors":"D. Goettler, Amit Savkar, K. D. Murphy, Z. Leseman","doi":"10.1115/IMECE2007-43622","DOIUrl":"https://doi.org/10.1115/IMECE2007-43622","url":null,"abstract":"It has been shown in recent times that the use of structural vibrations is a viable approach in repairing stiction failed MEMS cantilever beams. It has also been observed that such a technique is sensitive to various parametric values associated with the de-sticking of these beams. In the current paper we present experimental results which characterize the ideal cantilever beam. An analytical model of stiction failed MEMS cantilever beams under electrostatic actuation is presented. Physical parameters such as stiffness, bending rigidity, damping, excitation voltage, etc. are incorporated in terms of Mathieu parameters to study the stability of the system. An experimental characterization of natural frequency, Young’s Modulus, and damping ratio, which form important components of the analysis, is presented. Accompanying these results is a description of the experimental set up used for finding these parameters. Experiments were performed at both atmospheric and vacuum pressures. An interferometric microscope mounted above the glass window of the vacuum chamber was used to determine the crack length of each beam and observe the profiles of the arrays of microcantilevers in-situ. A Laser Doppler Vibrometer was used for determination of characterization parameters. The microcantilevers were fabricated using the SUMMiT IV process of Sandia National Laboratories. Structural vibrations were induced by placing an alternating voltage on a cofabricated actuation pad located under the microcantilevers near their anchor point. Theoretical modeling shows the dependence of physical parameters that lead to stiction repair.Copyright © 2007 by ASME","PeriodicalId":315415,"journal":{"name":"2008 GSW Proceedings","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127124737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Homework or Quiz? 家庭作业还是小测验?

2008 GSW Proceedings Pub Date : 1900-01-01 DOI: 10.18260/1-2-370-38567

R. Bannerot

引用次数: 0

Indentation Analysis of Metal-Ceramic Multilayered Composites 金属-陶瓷多层复合材料压痕分析

2008 GSW Proceedings Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38588

G. Tang, Yu‐Lin Shen

引用次数: 0

Cooperative Learning: An Integral Part of Mechanical Engineering Technology Curriculum 合作学习:机械工程技术课程的重要组成部分

2008 GSW Proceedings Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38560

J. Mayrose, D. Kukulka

引用次数: 0

The Evolution of a Senior Capstone Course in the Context of a Research-Based University Quality Enhancement Plan 研究型大学质量提升计划背景下高级顶点课程的演变

2008 GSW Proceedings Pub Date : 1900-01-01 DOI: 10.18260/1-2-370-38544

F. Attarzadeh, E. Barbieri, M. Ramos

引用次数: 2

Ethical Challenges Affecting Engineers and Engineering Education 影响工程师和工程教育的伦理挑战

2008 GSW Proceedings Pub Date : 1900-01-01 DOI: 10.18260/1-2-370-38563

P. Bhattacharya, Jiecai Luo

{"title":"Ethical Challenges Affecting Engineers and Engineering Education","authors":"P. Bhattacharya, Jiecai Luo","doi":"10.18260/1-2-370-38563","DOIUrl":"https://doi.org/10.18260/1-2-370-38563","url":null,"abstract":"Engineering is a creative field produced by an intelligent mixing of science, practice and policy (or ethics). Engineers design, create and test products and processes to enhance safety, improve health and welfare of the public in performance of their professional duties. We are making these changes to stay on the cutting edge of technologies and markets that are of crucial importance to our stakeholders – engineers, students and industries that support engineering applications. Challenges to ethically drive innovations to produce connectivity between people, systems and their performance in most circumstances have started affecting engineering education. This paper will map future ethical challenges affecting engineering education. The knowledge base, economy and globalization continue to challenge the basic industrial and hi-tech era assumptions upon which most public schools, curricula and evaluation mechanisms are based. After the start of digital divide period, new interactive digital media are diffusing in rapidly, even in low income groups, inculcating a youth-media culture that is gate crashing into schools and educators like a huge tsunami, producing inconsistent student performance across the U.S. making engineering education lag behind those of other countries. On an ethical level an American engineer is intimately involved in growing global US relations – and in reaching agreements between U.S. and other countries producing enormous outsourcing contracts. It is a good question, as to how do one feel that these challenges have to be answered in the right perspective to accomplish amicable results for the society in the time of economic downturn. Though training in ethics, in recent years has achieved widespread and enthusiastic acceptance throughout the engineering community, yet a lot needs to be done to teach ethical principals in every engineering subject. This paper is an introduction to all points of interest in university-industry and student relations to evolve a road map to a rewarding engineering career","PeriodicalId":315415,"journal":{"name":"2008 GSW Proceedings","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132345907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Automated Control of Chicken Environment and Egg Production 鸡环境与产蛋的自动化控制

2008 GSW Proceedings Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38587

Titilope Z. Alagun, Dr. Shahryar Darayan

{"title":"Automated Control of Chicken Environment and Egg Production","authors":"Titilope Z. Alagun, Dr. Shahryar Darayan","doi":"10.18260/1-2-620-38587","DOIUrl":"https://doi.org/10.18260/1-2-620-38587","url":null,"abstract":"This paper will discuss the design of a Fully-Automated Prototype Chicken Farm. The project has been completed and tested to work properly. The aim of this project is to utilize a computer to control the living environment of chickens and transport the chicken eggs from the nest to the separator unit where the eggs would be separated based on their height using relay switches. The units controlled by the relay ports connected to the computer include the Light Unit, Food Supply Unit, Water Supply Unit, and Fan Unit. The software for this program is written in C language. The egg separation unit will be powered from a dc power supply and consists of three main parts which are Egg Conveyor unit, Egg Separator, and controlling unit. The Egg Conveyor transports the eggs from the nest to the conveyor. The Egg Separator unit is made of a ramp which inclines for the big size eggs and remains flat for the small size eggs. The Controlling unit will adjust the level of Egg Separator Unit based on the height of the egg. The automated chicken farm unit also has a Solar Unit that extracts and converts energy from the sun to electrical energy. This energy is used to power the chicken farm and also used to charge a battery for future use. This project would benefit both small and large scale chicken farms by reducing cost of operation, manual labor, and increasing productivity.","PeriodicalId":315415,"journal":{"name":"2008 GSW Proceedings","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123152988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the Professional Science Masters (PSM) Degree for Mechanical Engineering Technology Programs 机械工程技术专业科学硕士(PSM)学位评估

2008 GSW Proceedings Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38555

D. Kukulka, J. Mayrose

引用次数: 0

Determination of Thermal Expansion Coefficients of High Temperature Materials 高温材料热膨胀系数的测定

2008 GSW Proceedings Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38583

Nana-Kwaku Danquah, P. Mensah, S. Ibekwe, Guoqiang Li

引用次数: 0

Postsurgical Finite Element Analysis of Mandibular Fracture Fixation 下颌骨折术后固定的有限元分析

2008 GSW Proceedings Pub Date : 1900-01-01 DOI: 10.18260/1-2-620-38586

Scott T. Lovald, T. Khraishi, J. Wagner, B. Baack

引用次数: 0