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Extending the performance of net sha...

Buckley, Richard Theodore.

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Extending the performance of net shape molded fiber reinforced polymer composite valves for use in internal combustion engines.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Extending the performance of net shape molded fiber reinforced polymer composite valves for use in internal combustion engines./
Author:	Buckley, Richard Theodore.
Description:	332 p.
Notes:	Adviser: Rudolf Stanglmaier.
Contained By:	Dissertation Abstracts International68-08B.
Subject:	Engineering, Automotive. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3281638
ISBN:	9780549203315

Extending the performance of net shape molded fiber reinforced polymer composite valves for use in internal combustion engines.
Buckley, Richard Theodore.

Extending the performance of net shape molded fiber reinforced polymer composite valves for use in internal combustion engines. - 332 p.

Adviser: Rudolf Stanglmaier.

Thesis (Ph.D.)--Colorado State University, 2007.

Fiber Reinforced Composite (FRC) materials offer the possibility of reduced mass and increased structural performance over conventional metals. When used in reciprocating components of internal combustion engines, this may enable increased power and mechanical efficiency. Previously published work on FRC engine valves has both shown structural and thermal limitations.

ISBN: 9780549203315Subjects--Topical Terms:

1018477
Engineering, Automotive.

Extending the performance of net shape molded fiber reinforced polymer composite valves for use in internal combustion engines.
LDR:03342nam 2200313 a 45 001 958766
005 20110704
008 110704s2007 ||||||||||||||||| ||eng d
020 $a 9780549203315
035 $a (UMI)AAI3281638
035 $a AAI3281638
040 $a UMI $c UMI
100 1 $a Buckley, Richard Theodore. $3 1282223
245 1 0 $a Extending the performance of net shape molded fiber reinforced polymer composite valves for use in internal combustion engines.
300 $a 332 p.
500 $a Adviser: Rudolf Stanglmaier.
500 $a Source: Dissertation Abstracts International, Volume: 68-08, Section: B, page: 5511.
502 $a Thesis (Ph.D.)--Colorado State University, 2007.
520 $a Fiber Reinforced Composite (FRC) materials offer the possibility of reduced mass and increased structural performance over conventional metals. When used in reciprocating components of internal combustion engines, this may enable increased power and mechanical efficiency. Previously published work on FRC engine valves has both shown structural and thermal limitations.
520 $a A net-shape resin transfer molded intake valve has been developed, using a single-piece carbon fiber preform and the high temperature polymer PETI-RFI. Structural design issues have been overcome. Performance has been validated through static testing and dynamic testing. Testing culminated with an intake valve operating for four hundred continuous minutes in an engine without failure.
520 $a High engine load conditions resulted in thermal failure of FRC valves. Extensive thermal modeling was conducted to simulate the effect of fiber orientation and coating combinations on transient thermal performance of FRCs. One dimensional modeling has predicted FRC valve surface temperatures to be 120°C higher than that of a steel valve. Simply re-orienting conductive fiber along the heat path may reduce the temperature rise to below that of steel.
520 $a Two dimensional transient FRC and coatings thermal analysis has resulted in a novel method of evaluating thermal performance. Using the unitless ratio of thermal resistance at the coating surface and at the interface boundary, designed Bb, an accurate prediction of the interface temperature can be obtained. From this, relative temperature gradients in both the coating and core materials can also be estimated. Analysis shows that the values of Bb<1, interface temperature is high and heat is transmitted to the core. For values of Bb>1, interface temperature is lower, a large temperature gradient exists in the coating, and the core material is more thermally isolated. Testing of coupon samples in the cylinder head of a running engine has verified the trends shown. Using this methodology a fiber and coating structure is proposed that reduces FRC core temperature by 80%. It has been shown through analysis and experimentation that careful selection of fiber orientation and coating materials can enable a polymer matrix composite material to withstand the structural and thermal environment of an IC engine combustion chamber.
590 $a School code: 0053.
650 4 $a Engineering, Automotive. $3 1018477
650 4 $a Engineering, Mechanical. $3 783786
690 $a 0540
690 $a 0548
710 2 $a Colorado State University. $3 675646
773 0 $t Dissertation Abstracts International $g 68-08B.
790 $a 0053
790 1 0 $a Stanglmaier, Rudolf, $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3281638