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Fatigue damage control of structures...

Hull, Charles Anderson.

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Fatigue damage control of structures using surface mounted piezoceramic actuators.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Fatigue damage control of structures using surface mounted piezoceramic actuators./
Author:	Hull, Charles Anderson.
Description:	235 p.
Notes:	Adviser: Kevin C. Craig.
Contained By:	Dissertation Abstracts International60-04B.
Subject:	Applied Mechanics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9925254
ISBN:	0599249153

Fatigue damage control of structures using surface mounted piezoceramic actuators.
Hull, Charles Anderson.

Fatigue damage control of structures using surface mounted piezoceramic actuators. - 235 p.

Adviser: Kevin C. Craig.

Thesis (Ph.D.)--Rensselaer Polytechnic Institute, 1999.

Actuator mount fatigue is evident in the life test data, suggesting the presence of electrical and mechanical fatigue effects in PZT. The results show that piezoceramics may be limited but viable fatigue control actuators in some applications.

ISBN: 0599249153Subjects--Topical Terms:

1018410
Applied Mechanics.

Fatigue damage control of structures using surface mounted piezoceramic actuators.
LDR:02921nam 2200313 a 45 001 929509
005 20110427
008 110427s1999 ||||||||||||||||| ||eng d
020 $a 0599249153
035 $a (UnM)AAI9925254
035 $a AAI9925254
040 $a UnM $c UnM
100 1 $a Hull, Charles Anderson. $3 1252997
245 1 0 $a Fatigue damage control of structures using surface mounted piezoceramic actuators.
300 $a 235 p.
500 $a Adviser: Kevin C. Craig.
500 $a Source: Dissertation Abstracts International, Volume: 60-04, Section: B, page: 1814.
502 $a Thesis (Ph.D.)--Rensselaer Polytechnic Institute, 1999.
520 $a Actuator mount fatigue is evident in the life test data, suggesting the presence of electrical and mechanical fatigue effects in PZT. The results show that piezoceramics may be limited but viable fatigue control actuators in some applications.
520 $a Durability and reliability are important objectives in the design of mechanical structures for vibration environments. Traditionally, these objectives have been achieved using passive design strategies involving the modification of design geometry, the use of stronger materials, and viscoelastic damping materials. Recent advances in piezoceramic materials and structural control theory suggest the use of an additional design tool for the pursuit of durable structures; active stress and damage control. That is, actuators and sensors may be distributed on a structure in such a way that control is exercised over the state of stress, strain, and the accumulation of structural damage.
520 $a In this research, an investigation into fatigue control of beam structures using surface mounted piezoceramics is performed, consisting of both modeling and hardware testing. Both classical and finite element dynamic modeling techniques are applied to generate modal based closed loop state space models. A test bed is designed and built for life testing active beams. Control system hardware and performance measurement techniques are developed. Vibration damage suppression is demonstrated in a design employing an active beam with modal rate feedback control and lead zirconate titanate (PZT) actuators. The life of this design example is extended by two orders of magnitude in resonant dwell testing.
520 $a A thermally based pre-stress procedure is presented for enhancing the durability of PZT actuators. In this process, actuators are placed in a compressive stress state by elevated temperature bonding to materials with higher coefficients of thermal expansion. Subtle negative effects of pre-stress on actuation strength are observed and measured.
590 $a School code: 0185.
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Engineering, Mechanical. $3 783786
690 $a 0346
690 $a 0548
710 2 0 $a Rensselaer Polytechnic Institute. $3 1019062
773 0 $t Dissertation Abstracts International $g 60-04B.
790 $a 0185
790 1 0 $a Craig, Kevin C., $e advisor
791 $a Ph.D.
792 $a 1999
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9925254