Ground and Flight Test Structural Excitation Using Piezoelectric Actuators

Ground and Flight Test Structural Excitation Using Piezoelectric Actuators
Author:
Publisher:
Total Pages: 20
Release: 2002
Genre: Actuators
ISBN:

A flight flutter experiment at the National Aeronautics and Space Administration (NASA) Dryden Fight Research Center, Edwards, California, used an 18-inch half-span composite model called the Aerostructures Test Wing (ATW). The ATW was mounted on a centerline flight test fixture on the NASA F-15B and used distributed piezoelectric strain actuators for in-flight structural excitation. The main focus of this paper is to investigate the performance of the piezoelectric actuators and test their ability to excite the first-bending and first-torsion modes of the ATW on the ground and in-flight. On the ground, wing response resulting from piezoelectric and impact excitation was recorded and compared. The comparison shows less than a 1-percent difference in modal frequency and a 3-percent increase in damping.

Vibration Theory and Applications with Finite Elements and Active Vibration Control

Vibration Theory and Applications with Finite Elements and Active Vibration Control
Author: Alan Palazzolo
Publisher: John Wiley & Sons
Total Pages: 973
Release: 2016-01-11
Genre: Technology & Engineering
ISBN: 1118404262

Based on many years of research and teaching, this book brings together all the important topics in linear vibration theory, including failure models, kinematics and modeling, unstable vibrating systems, rotordynamics, model reduction methods, and finite element methods utilizing truss, beam, membrane and solid elements. It also explores in detail active vibration control, instability and modal analysis. The book provides the modeling skills and knowledge required for modern engineering practice, plus the tools needed to identify, formulate and solve engineering problems effectively.

Smart Structures Theory

Smart Structures Theory
Author: Inderjit Chopra
Publisher: Cambridge University Press
Total Pages: 925
Release: 2014
Genre: Science
ISBN: 052186657X

This book focuses on smart materials and structures, which are also referred to as intelligent, adaptive, active, sensory, and metamorphic. The ultimate goal is to develop biologically inspired multifunctional materials with the capability to adapt their structural characteristics, monitor their health condition, perform self-diagnosis and self-repair, morph their shape, and undergo significant controlled motion.

Adaptronics and Smart Structures

Adaptronics and Smart Structures
Author: Hartmut Janocha
Publisher: Springer Science & Business Media
Total Pages: 554
Release: 2007-10-10
Genre: Technology & Engineering
ISBN: 3540719679

Adaptronic structures and systems are engineered to adjust automatically to variable operating and environmental conditions, through the use of feedback control. The authors of this book have taken on the task of comprehensively describing the current state of the art in this highly modern and broadly interdisciplinary field. The book presents selected examples of applications, and goes on to demonstrate current development trends.