Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Interface Damping at Riveted Joints. Part II: Damping and Fatigue Measurements

Report Number: ASD TR 61-467 Part II
Author: Eaton, D. C. G.
Author: Mead, D. J.
Corporate Author: University of Southampton
Laboratory: Air Force Materials Laboratory
Date of Publication: 1965-08
Pages: 57
Contract: AF-61(052)-504
Project: 7351 - Metallic Materials
Task: 735106 - Behavior of Metals
AD Number: AD0473203

Abstract:
This report describes experiments carried out to verify the theories of ASD Technical Report 61-467, Part I, which predicted the energy dissipation in a simple lap joint with a visco-elastic interfacial layer. The effect of the visco-elastic layer on the fatigue life of such a joint is also investigated. The complex shear modulus of the visco-elastic material used (Polyvinyl Actetate) has been measured for a range of frequencies and temperatures. This permitted an optimum joint configuration to be chosen and provided data for comparing theoretical with experimental values of the energy dissipated in the joint. Experiments on singly riveted lap joints have indicated that a considerable damping increment can be obtained by the addition of the damping layer, although the magnitude varies considerably with frequency and temperature. Fatigue tests on singly riveted lap joints have indicated that, within the limits of the investigation, the presence of the visco-elastic layer improves the fatigue life of the joint.


Provenance:
Lockheed Martin Missiles & Fire Control
Download this report

(PDF, 4.04 MB, 57 pages)

Other options for obtaining this report

Via the Defense Technical Information Center (DTIC):
A record for this report, and possibly a full-image download of the report, exists at DTIC

Via National Technical Information Service:
This report may have been digitized and made freely available for public download, or made publicly available for purchase by the National Technical Information Service through their online database, the National Technical Reports Library

Indications of Public Availability
No digital image of an index entry indicating public availability is currently available
There has been no verification of an indication of public availability from an inside cover statement

Related Reports

This report has the following parts/volumes: