Calibration of Impulse Technique Experimental Set-Up for Determination of Damping Loss Factor
Abstract
Composite materials are currently being considered for numerous Naval applications. Among their many advantages, their inherent vibration damping characteristics is becoming a dominant design consideration. To date, however, there are no analytical techniques which have the capability of predicting the damping loss factor of a particular composite system. One is therefore limited to experimental determination of the damping loss factor for composite materials which requires a high degree of accuracy and precision. An experimental apparatus has been designed, fabricated and tested using 2024 T-4 aluminum as a calibration material. This material has been well characterized in regard to its damping loss factor. Of critical importance is the material placed between the clamping block and the specimen. These materials act to distribute the load and to minimize frictional losses. Various materials were investigated. Damping loss factor; Experimental calibration; Zener thermoelastic theory.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1989
- Accession Number
- ADA206797
Entities
People
- Roger M. Crane