MATHEMATICAL MODELING OF STRESS CORROSION CRACKING

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$331,735.00
Award Year:
1984
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
328
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Electrochemical Technology
3935 Leary Way N.w., Seattle, WA, 98107
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr. Theodore R. Beck
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
THE WORK DESCRIBED IN THIS PROPOSAL IS DIRECTED TOWARD QUANTITATIVELY UNDERSTANDING THE ELECTROCHEMISTRY OF LOCALIZED CORROSION IN AQUEOUS ENERGY PRODUCTION AND CONVERSION FACILITIES TO PROVIDE A BASIS FOR SOLVING THESE EXPENSIVE PROBLEMS. THE PRINCIPAL INVESTIGATOR AND COLLABORATORS PUBLISHED IN 1969 THE FIRST QUANTITATIVE MATHEMATICAL MODEL FOR STRESS CORROSION CRACKING OF TITANIUM. THIS MODEL ACCOUNTED FOR MANY ASPECTS OF SCC BUT DID NOT DESCRIBE EVENTS IN THE MOST IMPORTANT REGION, THE CRACK TIP. SUBSEQUENT RESEARCH BY THE P.I. ON PITTING CORROSION SHOWED THE IMPORTANT ROLE OF SALT FILMS ON THE CORRODING SURFACE. IT IS PROPOSED TO MATHEMATICALLY MODEL IN PHASE I THE ELECTROCHEMICAL TRANSPORT AND KINETIC PROCESSES THAT OCCUR IN TUNNEL CORROSION OF ALUMINUM WHICH HAS MANY OF THE FEATURES OF STRESS CORROSION CRACKING AND IS BELIEVED TO HAVE A SALT FILM AT THE TUNNEL END. THIS SYSTEM IS SIMPLER AND EASIER TO MODEL THAN SCC BECAUSE THE GEOMETRY IS BETTER DEFINED AND IT IS UNCOMPLICATED BY METALLURGICAL AND FRACTURE MECHANICS FACTORS.

* information listed above is at the time of submission.

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