Imperial College London
Alternate

Dr Catrin Mair Davies

Faculty of Engineering, Department of Mechanical Engineering

Reader in Structural Integrity of Alloys
 
 
 
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Contact

 

+44 (0)20 7594 7035catrin.davies

 
 
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Location

 

517UnknownSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

183 results found

Mehmanparast AN, Davies CM, Nikbin KM, 2010, VALIDATION OF THE <i>K</i> AND <i>J</i> PARAMETERS IN A COMPACT TENSION SPECIMEN CONTAINING INTERGRANULAR AND STRAIGHT CRACK PATHS, ASME Pressure Vessels and Piping Division/K-PVP Conference, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 355-366

Conference paper

Kamel S, Davies C, Lee H, Nikbin Ket al., 2010, EFFECT OF CRACK EXTENSION IN A COMPACT TENSION C(T) SPECIMEN CONTAINING A RESIDUAL STRESS ON THE STRESS INTENSITY FACTORS, ASME Pressure Vessels and Piping Division/K-PVP Conference, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 1275-1280

Conference paper

Davies CM, Webster GA, Nikbin KM, 2010, PREDICTIONS OF CREEP CRACK INITIATION PERIODS, ASME Pressure Vessels and Piping Division/K-PVP Conference, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 313-322

Conference paper

Li D-F, O'Dowd NP, Davies CM, Zhang S-Yet al., 2010, EVALUATING THE MECHANICAL BEHAVIOR OF 316 STAINLESS STEEL AT THE MICROSCALE USING FINITE ELEMENT MODELLING AND IN-SITU NEUTRON SCATTERING, ASME Pressure Vessels and Piping Division/K-PVP Conference, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 981-988

Conference paper

Davies CM, Hughes D, Wimpory RC, Dean DW, Nikbin KMet al., 2010, MEASUREMENTS OF RESIDUAL STRESSES IN 316 STAINLESS STEEL WELDMENTS, ASME Pressure Vessels and Piping Division/K-PVP Conference, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 1265-1273

Conference paper

Biglari F, Davies CM, Nikbin KM, 2010, Development of Simulations Models under Thermo Mechanical Loading Conditions, Key Engineering Materials, Key Engineering Materials, Vol: 417-418, Pages: 69-72

Journal article

Davies CM, Wimpory RC, Paradowska AM, Nikbin KMet al., 2010, Residual Stress Measurements in Large Scale Component Sections” Materials Science Forum, Pages: 321-326

Conference paper

Wang L, Davies CM, Wimpory RC, Xie LY, Nikbin KMet al., 2010, Measurement and simulation of temperature and residual stress distributions from friction stir welding AA2024 Al alloy, MATERIALS AT HIGH TEMPERATURES, Vol: 27, Pages: 167-178, ISSN: 0960-3409

Journal article

Davies CM, Dean DW, Mehmanparast AN, Nikbin KMet al., 2010, THE INFLUENCE OF CREEP-FATIGUE INTERACTION ON HIGH TEMPERATURE CRACK GROWTH IN 316 STEEL WELDMENTS, Pressure Vessels and Piping Conference of the American-Society-of-Mechanical-Engineers, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 1491-1502

Conference paper

Davies CM, Dean DW, Mehmanparast AN, Nikbin KMet al., 2010, COMPRESSIVE PRE-STRAIN EFFECTS ON THE CREEP AND CRACK GROWTH BEHAVIOUR OF 316H STAINLESS STEEL, ASME Pressure Vessels and Piping Division/K-PVP Conference, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 323-330

Conference paper

Davies CM, Beres M, Hughes D, Dye D, Nikbin KMet al., 2010, THE INFLUENCE OF GEOMETRIC AND WELDING PARAMETERS ON RESIDUAL STRESS IN THIN WELDED STEEL STRUCTURES, Pressure Vessels and Piping Conference of the American-Society-of-Mechanical-Engineers, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 327-334

Conference paper

Davies CM, Webster GA, Nikbin KM, 2009, Predictions of creep crack initiation periods, 12th International Conference on Fracture 2009, ICF-12, Vol: 1, Pages: 397-406

Several procedures are available for estimating creep crack initiation (CCI) time periods prior to the onset of creep crack extension from an existing defect in high temperature components. The applicability of a procedure depends on the required material's data availability. Various methods are described including methods based on the creep fracture mechanics term C *, the crack opening displacement concept and the sigma-d approach. These procedures are applied to, and compared for, an austenitic and ferritic steel of relevance to the electric power generation industry. It is shown that reliable and conservative predictions can be obtained with all methods.

Journal article

Davies CM, 2009, Predicting creep crack initiation in austenitic and ferritic steels using the creep toughness parameter and time-dependent failure assessment diagram, FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, Vol: 32, Pages: 820-836, ISSN: 8756-758X

Journal article

Nip KH, Gardner L, Davies CM, Elghazouli AYet al., 2009, Extremely low cycle fatigue tests on structural carbon steel and stainless steel, Journal of Constructional Steel Research, Vol: 66, Pages: 96-110, ISSN: 0143-974X

Cyclic material tests in the low and extremely low cycle fatigue regime were carried out to study the properties of structural carbon steel and stainless steel. A total of 62 experiments were performed in cyclic axial and bending configurations, with strain amplitudes up to ±15%. Materials from hot-rolled carbon steel (S355J2H), cold-formed carbon steel (S235JRH) and cold-formed austenitic stainless steel (EN 1.4301 and EN 1.4307) structural sections were tested and the results were compared. The strain–life data from the axial tests were used to derive suitable Coffin–Manson parameters for the three materials; two further extremely low cycle fatigue life prediction models were also considered. The results revealed that the three materials exhibit similar strain–life relationships despite significantly different elongations at fracture measured in monotonic tensile tests. The hysteretic responses of the materials at different strain amplitudes were used to calibrate a combined isotropic/kinematic cyclic material hardening model which can be incorporated into numerical models of structural members. The stainless steel specimens displayed significantly greater levels of cyclic hardening than the corresponding carbon steel samples. A relationship between the results obtained from axial and bending test arrangements was established through consideration of energy dissipation, enabling strain–life models to be derived from either means of testing.

Journal article

Davies CM, Dean DW, Yatomi M, Nikbin KMet al., 2009, The influence of test duration and geometry on the creep crack initiation and growth behaviour of 316H steel, MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, Vol: 510-11, Pages: 202-206, ISSN: 0921-5093

Journal article

Shan X, Davies CM, Wangsdan T, O'Dowd NR, Nikbin KMet al., 2009, Thermo-mechanical modelling of a single-bead-on-plate weld using the finite element method, INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, Vol: 86, Pages: 110-121, ISSN: 0308-0161

Journal article

Tsunori M, Davies CM, Dye D, Nikbin KMet al., 2009, NUMERICAL MODELLING OF RESIDUAL STRESS AND DISTORTION IN WELDED THIN STEEL PLATES, ASME Presure Vessels and Piping Conference 2008, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 299-307

Conference paper

Webster GA, Davies CM, Skelton RP, Nikbin KM, Dean DWet al., 2009, Determination of Creep Crack Growth Incubation Periods in Type 316H Stainless Steel, 2nd International Creep Conference, Publisher: DESTECH PUBLICATIONS, INC, Pages: 1272-1282

Conference paper

Davies CM, Wimpory RC, Tabuchi M, Dean DW, Nikbin KMet al., 2009, THE INFLUENCE OF SPECIMEN GEOMETRY AND TEST TIMES ON HIGH TEMPERATURE CRACK GROWTH BEHAVIOUR IN PARENT AND WELDED 316H STAINLESS STEEL, Pressure Vessels and Piping Conference of the American-Society-of-Mechanical-Engineers, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 1221-1229

Conference paper

Davies CM, Wimpory RC, Dye D, Nikbin KMet al., 2009, THE EFFECTS OF PLATE DIMENSIONS ON RESIDUAL STRESSES IN WELDED THIN STEEL PLATES, ASME Presure Vessels and Piping Conference 2008, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 309-319

Conference paper

Yatomi M, Davies CM, Nikbin KM, 2008, Creep crack growth simulations in 316H stainless steel, ENGINEERING FRACTURE MECHANICS, Vol: 75, Pages: 5140-5150, ISSN: 0013-7944

Journal article

Davies CM, Dean DW, Nikbin KM, O'Dowd NPet al., 2007, Interpretation of creep crack initiation and growth data for weldments, ENGINEERING FRACTURE MECHANICS, Vol: 74, Pages: 882-897, ISSN: 0013-7944

Journal article

Davies CM, O'Dowd NP, Nikbin KM, Webster GAet al., 2007, An analytical and computational study of crack initiation under transient creep conditions, INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, Vol: 44, Pages: 1823-1843, ISSN: 0020-7683

Journal article

Davies CM, Wimpory RC, Beres M, Lightfoot MP, Dye D, Oliver Eet al., 2007, The effect of residual stress and microstructure on distortion in thin welded steel plates, Joint Conference of the ASME Pressure Vessels and Piping Division/8th International Conference on Creep and Fatigue at Elevated Temperatures, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 851-858

Conference paper

Davies CM, Mueller F, Nikbin KM, O'Dowd NP, Webster GAet al., 2007, Analysis of creep crack initiation and growth in different geometries for 316H and carbon manganese steels, 5th International ASTM/ESIS Symposium on Fatigue and Fracture, Publisher: AMER SOCIETY TESTING AND MATERIALS, Pages: 115-+, ISSN: 0066-0558

Conference paper

Davies CM, Kourmpetis M, O'Dowd NP, Nikbin KMet al., 2007, Experimental evaluation of the <i>J</i> or <i>C</i>* parameter for a range of cracked geometries, 5th International ASTM/ESIS Symposium on Fatigue and Fracture, Publisher: AMER SOCIETY TESTING AND MATERIALS, Pages: 321-340, ISSN: 0066-0558

Conference paper

Davies CM, O'Dowd NP, Nikbin KM, Webster GAet al., 2006, Prediction of creep crack initiation under transient stress conditions, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, Vol: 2006, ISSN: 0277-027X

A method to predict the time for creep crack initiation (CCI) from a stationary crack tip is presented. The method is relevant to situations where small scale yield or widespread plasticity conditions prevail on initial loading. Initiation is considered to occur at the attainment of a critical creep strain at a small distance from the crack tip. The model proposed here considers the integrated effects of creep strain accumulation as the stress distribution changes from that on initial loading (controlled by J) to the steady state creep stress distribution (controlled by C*). Material properties are chosen to represent Type 316H stainless steel at 550°C and plane strain conditions are considered. For the conditions examined, the CCI times predicted are significantly shorter times than those predicted using a steady state creep model. Copyright © 2006 by ASME.

Journal article

Davies CM, Mueller F, Nikbin KM, O'Dowd NP, Webster GAet al., 2006, Analysis of Creep Crack Initiation and Growth in Different Geometries for 316H and Carbon Manganese Steels”, Vol: 3

Journal article

Davies CM, Nikbin KA, O'Dowd NP, Webster GAet al., 2006, Prediction of crack initiation times for high temperature lifetime assessments, 8th International Conference on Engineering Structural Integrity Assessment, Publisher: EMAS PUBL LTD, Pages: 309-320

Conference paper

Davies CM, Kourmpetis M, O'Dowd NP, Nikbin KMet al., 2006, Evaluation of the J or C* Parameter for a Range of Cracked Geometries, Journal of ASTM International

Journal article

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