Accession Number : ADA125639


Title :   Accelerated Corrosion Testing


Descriptive Note : Final rept. 1 Jun 79-31 May 82


Corporate Author : SYSTEMS RESEARCH LABS INC DAYTON OH RESEARCH APPLICATIONS DIV


Personal Author(s) : Khobaib, M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a125639.pdf


Report Date : Dec 1982


Pagination or Media Count : 149


Abstract : Available methods for accelerated testing of corrosion behavior yield results which are not sufficiently accurate or reliable for predicting the service life of aircraft components and materials which degrade or fail due to environmental attack. Research has been conducted in controlled atmospheres on the localized environmental enhancement of crack-growth rates of aerospace alloys in order to provide the basis for development of realistic accelerated corrosion tests. Slow-strain-rate, corrosion-fatigue, and rising-load experiments have been conducted on high-strength 4340 steel and 7075-T6 aluminum alloy using accelerating pollutants such as sulfur dioxide, nitrogen dioxide, surface salt, and ambient to 100%-relative-humidity (RH) air in a specially designed atmospheric chamber. (Author)


Descriptors :   *ALUMINUM ALLOYS , *CRACK PROPAGATION , *AIRFRAMES , *STRESS CORROSION , *STRUCTURAL STEEL , STRAIN RATE , AEROSPACE ENVIRONMENTS , POLLUTANTS , NITROGEN OXIDES , LIFE TESTS , ACCELERATED TESTING , HUMIDITY , SULFUR OXIDES , CONTROLLED ATMOSPHERES , SALT SPRAY TESTS


Subject Categories : Aircraft
      Properties of Metals and Alloys
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE