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


Personal Author(s) : Couch,William P ; Macander,Aleksander B ; Crane,Roger M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a133305.pdf


Report Date : Sep 1983


Pagination or Media Count : 43


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 epoxy/glass 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)


Descriptors :   *SHIP STRUCTURAL COMPONENTS , *GLASS REINFORCED PLASTICS , *EPOXY LAMINATES , *COMPOSITE MATERIALS , STRUCTURAL COMPONENTS , STRUCTURAL ANALYSIS , IMPACT TESTS , FATIGUE TESTS(MECHANICS) , LOADS(FORCES) , BRITTLENESS , EXPOSURE(GENERAL) , OCEAN ENVIRONMENTS , IMMERSION , TEST METHODS , CONFIGURATION MANAGEMENT , PHYSICAL PROPERTIES , MECHANICAL PROPERTIES


Subject Categories : Laminates and Composite Materials
      Marine Engineering


Distribution Statement : APPROVED FOR PUBLIC RELEASE