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Keywords: mathematical models
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eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1997
ISBN-10: 0-8031-2474-0
ISBN: 978-0-8031-2474-5
... that could specify the concentration of chemical producing the observed Daphnia population dynamics. In this model setting, only the last approach exhibits promise for identifying indicators of chemical stress. ecotoxicology retrospective assessment mathematical models Stressor indicators...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1992
ISBN-10: 0-8031-1473-7
ISBN: 978-0-8031-1473-9
... and finite difference) methods, with a brief review of boundary methods in corrosion analysis. corrosion analysis galvanic corrosion computational methods finite element method finite difference method mathematical models differential equations mathematical prediction nonlinear polarization...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1990
ISBN-10: 0-8031-1283-1
ISBN: 978-0-8031-1283-4
... and determined the effects of increasing void fraction in the bulk electrolyte. current density current distribution electrochemical measurement experimental design finite difference theory IR drop mathematical models numerical methods ohmic compensation potential distribution Vincent Farozic I...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1990
ISBN-10: 0-8031-1299-8
ISBN: 978-0-8031-1299-5
... to demonstrate their viability. R -curve J-R curves instability elastic-plastic fracture fracture tests data reduction mathematical models Thomas W. Orange 1 Method and Models for R-Curve Instability Calculations REFERENCE: Orange, T. W., "Method and Models for R-Curve Instability Calculations...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1988
ISBN-10: 0-8031-0981-4
ISBN: 978-0-8031-0981-0
... being electrically connected to a steel hull, although physically separated by an intervening plastic pipe, and to cover the case where the header is made from a cathodic material. galvanic corrosion impressed current protection cathodic protection seawater corrosion mathematical models...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1986
ISBN-10: 0-8031-0931-8
ISBN: 978-0-8031-0931-5
... is proposed in which measured intrinsic properties of a waste are used in mathematical models to infer the long-term leachability. To provide background information, laboratory leaching tests are reviewed with emphasis on interpretation of the results. It is argued that results of bench-scale tests...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1985
ISBN-10: 0-8031-0426-X
ISBN: 978-0-8031-0426-6
... that a first step has been taken in the efforts to use results from small-scale tests to rationally predict full-scale fire growth (for one specified scenario) and rank materials. combustible lining material small-scale test full-scale test correlation study mathematical models design models...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1985
ISBN-10: 0-8031-0433-2
ISBN: 978-0-8031-0433-4
... theoretically sound forecasts of chemical events in ecosystems. These “fate codes,” when coupled to equally rigorous techniques for computing effects of chemicals, can enhance the rationality, realism, and reliability of chemical safety evaluations. aquatic ecosystems mathematical models simulation...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1984
ISBN-10: 0-8031-0407-3
ISBN: 978-0-8031-0407-5
... to predict behavior of flaws growing from notches under spectrum loading. crack propagation plastic deformation fatigue (materials) spectrum loads retardation mathematical models Charles R.Saff' Crack Growth Retardation and Acceleration Models REFERENCE: Saff, C. R., "Crack Growth Retardation...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1984
ISBN-10: 0-8031-0208-9
ISBN: 978-0-8031-0208-8
... growth prediction. stress intensity factors surface flaws corner flaws mathematical models crack propagation C. R. Saff andK. B. Sanger^ Part-Through Flaw Stress Intensity Factors Developed by a Slice Synthesis Technique REFERENCE: Saff, C. R. and Sanger, K. B.; "Part-Through Flaw Stress...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1983
ISBN-10: 0-8031-0255-0
ISBN: 978-0-8031-0255-2
... of establishing the conclusive truth. Instead, we must rely upon a history of successful applications to impart increasing confidence in the reliability and applicability of the tools of environmental chemistry and computer modeling to environmental problems. mathematical models validity simulation...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1982
ISBN-10: 0-8031-0796-X
ISBN: 978-0-8031-0796-0
.... Bioconcentration data were utilized in a mathematical model to calculate the fate and transport of dieldrin in the Coralville Reservoir. The author demonstrates that laboratory-derived BCFs can be used in fate and effects modeling with order-of-magnitude results or better. bioconcentration water quality...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1980
ISBN-10: 0-8031-0325-5
ISBN: 978-0-8031-0325-2
... metal protective paints performance testing weathering theory generalized correlation environmental testing mathematical models standard materials corrosion resistance engineering design paint systems Raymond Tooke, Jr.' Performance Characterization of Exterior IVIetal Paints REFERENCE...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1979
ISBN-10: 0-8031-0279-8
ISBN: 978-0-8031-0279-8
... for exposure assessment lies in the use of mathematical modeling techniques. When environmental exposure models are coupled with environmental effects models, powerful tools for risk assessment emerge. Such sophisticated models need to be refined and verified, however, before risk analysis becomes accurate...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1978
ISBN-10: 0-8031-4480-6
ISBN: 978-0-8031-4480-4
.... The process provides ideal compressive stresses on all surfaces. This paper presents the development of the process from its initial theory to preliminary straightening tests. The work includes the development of a mathematical model which ( a ) determines the initial stress in a complex forged part when...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1977
ISBN-10: 0-8031-0311-5
ISBN: 978-0-8031-0311-5
... of the approach. concrete pipe soil-structure interaction conduits culverts deformation earth fills field tests mathematical models soil properties stresses R. B, Corotis I and R. J. Krizek I Analysis and Measurement of Soil Behavior Around Buried Concrete Pipe REFERENCE: Corotis, R. B...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1977
ISBN-10: 0-8031-0319-0
ISBN: 978-0-8031-0319-1
..., −1 and −2. The single overload test program excluded R l = +1/2, and the intermittent overload program was for R l = 0 only. A new simplified mathematical model was introduced which assumes that fatigue crack growth retardation is primarily a function of the overload ratio and the load ratio...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0593-2
ISBN: 978-0-8031-0593-5
... probability matrix are simply put to zero, and an alternative way using variable width dead zones in an off-line simulation is proposed. fatigue (materials) computers statistical analysis mathematical models fatigue tests random inputs simulation digital techniques F. SherratV and P. W. DavalP...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0352-2
ISBN: 978-0-8031-0352-8
... container ignition source against a combustible lining material. Scale model results continue to provide valuable insight, but the validity of partial scaling results must be considered for each type of experiment. A quasi-steady idealized mathematical model was developed to analyze the various parameters...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1975
ISBN-10: 0-8031-0296-8
ISBN: 978-0-8031-0296-5
... Mathematical models have been developed and effectively applied to daily refinery motor gasoline blending operations that allow the Reid vapor pressure (RVP) and the ASTM distillation properties of the gasoline to be predicted from a low-resolution gas chromatographic (GC) analysis...