Accession Number : ADA241313


Title :   Proceedings of Damping '91, Held in San Diego, California on 13 - 15 February 1991. Volume 3


Descriptive Note : Final rept. Feb 89-Feb 91.


Corporate Author : WRIGHT LAB WRIGHT-PATTERSON AFB OH


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a241313.pdf


Report Date : Aug 1991


Pagination or Media Count : 518


Abstract : Partial contents: Damping identifications--Identification techniques for damped distributed structural systems using the method of collocation, Correlation techniques to determine model form in robust nonlinear system realization identification, System level design and analysis of truss structures damped by viscous struts, Damping ratio estimates from autocorrelation functions, Damping materials--Passive vibration damping with noncohesive granular materials, Effect of porosity on the microstructural damping response of a 6061 aluminum alloys, Damping properties of aliphatic polyurethanes from 4, 4'-diclohexylmethane diisocyanate, and Apparatus for measuring the low frequency dynamic characteristics of materials, Composite and metal matrix--Controlling damping behavior of pitch-based carbon fibers, Internal damping of metal matrix composites, Vibration suppression of thin-walled composite tubes using embedded viscoelastic layers; Tubes and shells--Directional damping of global vibration modes of tubular structures by constrained layer treatments; Circular plates-- Dynamic analysis of finite, three dimensional, linear, elastic solids with Kelvin viscoelastic inclusions (Theory with applications to asymmetrically damped circular plate and, Response of a circular plate with patch damping; Viscous--Design, analysis, and testing of the PACOSS D-Strut Truss; Experimental measurements--Effect of source impedance on damping measurement using resonance dwell testing, and Low-deflection loss and hysteresis measurements on a spacecraft test joint; Metals and friction.


Descriptors :   *TEST AND EVALUATION , SOURCES , MEASUREMENT , RATIOS , VIBRATION , GLOBAL , EXPERIMENTAL DATA , MICROSTRUCTURE , SPACECRAFT , DISTRIBUTION , DYNAMICS , LAYERS , MATERIALS , VISCOELASTICITY , STRUCTURES , ELASTIC PROPERTIES , DAMPING , AUTOCORRELATION , PASSIVE SYSTEMS , COMPOSITE STRUCTURES , METAL MATRIX COMPOSITES , MATRIX MATERIALS , ALIPHATIC COMPOUNDS , SOLIDS , POROSITY , ESTIMATES , IDENTIFICATION , NONLINEAR SYSTEMS , PLATES , RESPONSE , INTERNAL , RESONANCE , TUBULAR STRUCTURES , EMBEDDING , TRUSSES , CORRELATION TECHNIQUES , POLYURETHANE RESINS , IMPEDANCE , FRICTION , VISCOSITY , LOW FREQUENCY , HYSTERESIS , SUPPRESSION , FUNCTIONS(MATHEMATICS) , CIRCULAR , DWELL TIME , STRUTS , TUBES , DIRECTIONAL , GRANULES , THIN WALLS , METALS


Subject Categories : Laminates and Composite Materials
      Properties of Metals and Alloys
      Plastics
      Numerical Mathematics
      Structural Engineering and Building Technology
      Mechanics
      Astronautics


Distribution Statement : APPROVED FOR PUBLIC RELEASE