Shock and Vibration Performance of an Epoxy Chocking Compound.
Abstract
For some years, various epoxy compounds have been used to form machinery/equipment chocks on merchant ships. In application, the item to be mounted is located and aligned, and supported in place by some temporary means while the chocking compound is mixed and poured in place. The advantages are speed, economy and intimacy of fit compared to conventional methods. More recently, these compounds have been used to a limited extent on Navy combatants, where shock and vibration environments are much more severe than those encountered in the mercantile fleet. In order to evaluate the ability of poured epoxy chocks to withstand these environments, two structures have been constructed which resemble equipment items which have been so mounted on combatants in terms of mounting footprint, weight and overturning moment. These have been subjected to shock and vibration tests similar to those required by the Navy for acceptance of shipboard equipment. The epoxy chocks were unaffected by the vibration test, while under shock test they sustained minor cracking and spalling, but without significant reduction of load-bearing area and no impairment of alignment function. It was concluded that their performance was satisfactory for the test situations employed. It should be cautioned, however, that other environmental factors (termperature, humidity, contaminants, etc.) than those considered here may also be effective, and that other mechanical situations might modify the results observed. Such factors should be evaluated for any contemplated installation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 07, 1979
- Accession Number
- ADA078496
Entities
People
- E. W. Clements
Organizations
- United States Naval Research Laboratory