MS 워드 
소개글
차량용 쿨랜트에 쓰여지는 O-ring에서 발생하는 문제를 분석 및 문제 해결을 위한 대책 제시(Material class, 소재공학용 리포트)
목차
TABLE OF CONTENTS1. Introduction
2. Background and Theory
2.1 Operation of Component
2.2 Theory of Failure
3. Failure Analysis
3.1 Theorization of Failure
3.2 Thermal Expansion of Monolithic Material
3.3 Quantification of Thermal Expansion
3.4 Quantification of Thermal Expansion
4. Recommendations
5. Conclusion
6. References
본문내용
Our group was able to obtain a failed BMW coolant temperature sensor located within the radiator assembly of the vehicle engine as shown in Figure 1.1, Figure 1.2, and Figure 1.3. The element, shown in Figure 1.4 and Figure 1.5, was used to alert the main electrical computer to power the radiator fan and prevent the car engine from overheating. The Hydrogenated Nitrile Butadiene Rubber (HNBR) O-ring employed to seal the connection between the sensor and the radiator assembly partially displaced from its original configuration and overlapped the principal sending unit. With this overlap, the O-ring no was longer “seated” within its designed cavity and therefore was allowing fluid to escape from the coolant vessel, thus transmitting distorted data to the central computer and the radiator fan. Our group further analyzed the failure of the O-ring of the temperature sensor and therefore provides recommendations to mend the examined dilemma.참고 자료
"2003 BMW M5 Dinan S3 1/4 Mile Drag Racing Timeslip Specs 0-60." DragTimes.com. Web. 01 Mar. 2010. <http://www.dragtimes.com/BMW-M5-Timeslip-13570.html >."Car Radiator Tips." RadiatorInfo.com. Web. 01 Mar. 2010. <http://www.radiatorinfo.com/radtip.html>.
"Coolant Temperature Sensor." About.com. Web. 01 Mar. 2010. <http://autorepair.about.com/>.
"E39 M5 and E52 Z8 Discussion 1998-2003." M5board.com. Web. 01 Mar. 2010. <http://www.m5board.com/vbulletin/e39-m5-e52-z8-discussion/33085-hartge-z4-short-summary-pics-video.html >.
Elert, Glenn. "Thermal Expansion." The Physics Hypertextbook. 1998. Web. 06 Mar. 2010. <http://physics.info/expansion/>.
"Engine Coolant Temperature Sensor Troubleshooting." AutoInc. Web. 01 Mar. 2010. <http://www.asashop.org/>.
"Fluid Compatibility Guide." Marco Rubber. Web. 01 Mar. 2010. <http://www.marcorubber.com/compatibility.htm>.
"Heating Controller “thinks” It’s Too Warm and Brings Cold Air." Bimmerforums.com. 30 Apr. 2009. Web. 01 Mar. 2010 <http://forums.bimmerforums.com/forum/showthread.
php?t=1222685 >.
"Hydrogenated Nitrile Butadiene Rubber (HNBR): Properties and Applications of Hydrogenated Nitrile Butadiene Rubber." AZO Materials. International Institute of Synthetic Rubber Producers, 13 Nov. 2002. Web. 06 Mar. 2010. <http://www.azom.com/details.asp?ArticleID=1724>.
"Identifying O-Ring Failure." Daemar, Inc. Daemar, Inc. Web.0 6 Mar. 2010.
"NORSOK M710 CERTIFIED N4007-90 (HNBR)." Parker. Web. 01 Mar. 2010. <http://www.parker.com/literature/Literature%20Files/packing/cat/english/5207.pdf>
"Properties of Virgin PTFE." Maryland Metrics. Web. 01 Mar. 2010. <http://mdmetric.com/or/proprigb.htm>.
"PTFE (polytetrafluoroethylene)." Curbell Plastics. Web. 01 Mar. 2010. <http://www.curbellplastics.com/technical-resources/pdf/ptfe-datasheet-curbell.pdf>.
"PTFE Specifications." Boedeker.com. Web. 01 Mar. 2010. <http://www.boedeker.com/ptfe_p.htm>.
Richardson, M.O.W. Polymer Engineering Composites. Essex, England: Applied Science Publishers Ltd., 1977. Print.
"Rubber Material Selection Guide HNBR or Highly Saturated Nitrile Halogenated Acryonitrile Butadiene." Robinson Rubber Products Company, Inc. Web. 01 Mar. 2010. <http://www.robinsonrubber.com/pdfs/HNBRRubber.pdf>.
"Temperature Sensors." Autoshop101. Web. 01 Mar. 2010. <http://www.autoshop101.com/forms/h32.p>.
