Accession Number:

ADA133305

Title:

Rubber-Modified Epoxy and Glass Laminates for Application to Naval Ship Structures.

Descriptive Note:

Final rept.,

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Report Date:

1983-09-01

Pagination or Media Count:

43.0

Abstract:

Because the decks and other structural elements of naval combatants are exposed to extreme handling and wear loads during construction, and operational and overhaul periods, a rubber-modified epoxy resin is being evaluated for application to naval ship structures. Preliminary results indicate that the rubber-modified resin performs substantially better in impact-resistance tests than do laminates of standard brittle glass-reinforced plastic GRP. Drop-ball impact tests are performed on 6.5-in. diameter, 0.25-in. thick disks. Currently, very little is known about the mechanics of this phenomena, its long-term behavior in a marine environment, and its characteristics when incorporated into a complex structure. A series of tests have been conducted on specimens, joints, panels, and structural components in an attempt to gain more information. Two generic carboxy terminated butadiene acrylonitrile CTBN-modified epoxyglass cloth material systems have been characterized, exposed to fatigue and long-term immersion loading, and evaluated when incorporated into several different structural configurations. The results of all these tests indicate that this material can withstand the harsh environmental and inservice loading conditions experienced by naval combatants. Author

Subject Categories:

  • Laminates and Composite Materials
  • Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE