Sue
6/184 - WELD - (c)WELD
AN - 210069
TI - Development of a practical method for the estimation of weld induced
crack in thick plate weldments.
AU - LEE J M; YOON D R; HEO H Y; JANG T W; LEE J W
OS - PUSAN NATIONAL UNIVERSITY; SAMSUNG HEAVY INDUSTRIES
CO LTD
SO - Intelligent Technology in Welding and Joining for the 21st Century.
Proceedings, International Welding/Joining Conference, Gyeongju, Korea, 2830 Oct.2002. Publ: [Daejeon, 305-343 Korea]; Korea Welding Society; 2002.
QA/NDT Session. Paper QN-2. pp.396-401. 13 fig., 2 tab., 4 ref.
NO - [CD ROM]
LO - KOREA
LA - ***English*** (Eng)
AV - CA (Copies Available)
DT - ***C*** (Conference paper)
PY - 2002
FS - T (Technical)
TC - T (Theoretical)
SH - WELDABILITY AND METALLURGY
IT - SYMPOSIA; STRUCTURAL STEELS; PLATE; FINITE ELEMENT
ANALYSIS; COMPUTATION; COLD CRACKING; DEFECTS; RESTRAINT;
RESIDUAL STRESSES; PREHEATING; HEAT TREATMENT; T JOINTS;
THICK; SIMULATING; ELASTIC ANALYSIS; PROCESS PARAMETERS;
PROCESS CONDITIONS; HYDROGEN; GASES; TEMPERATURE;
PREDICTION; STEELS; CRACKING
AB - A method is presented for evaluating the possibility of crack occurrence
in terms of crack density in welded thick section T joints, based upon finite
element simulations and systematic experiments, and taking particular
account of restraint effects. Finite element (FE) based methods were used to
carry out elastic analyses to calculate the residual stresses and the restraint
intensities. Design of experiment (DoE) studies were carried out using plates
of 50 mm thickness and submerged arc welding to determine the effects of
restraint intensity, diffusible hydrogen and preheating temperature on crack
occurrence, in terms of crack density. The FE simulations were used to
determine restraint intensities used in the DoE studies. The simulated and
experimental results were compared. A contour diagram of crack density for
given T joints was established.
UP - 2003-04
7/184 - WELD - (c)WELD
AN - 210068
XR - 202679; 208546
TI - The effects of heat input and gas flow rate on weld integrity for sleeve
repair welding of in-service gas pipelines.
AU - KIM Y P; KIM W S; BANG I W; OH K H
OS - KOREA GAS CORP; SEOUL NATIONAL UNIVERSITY
SO - Intelligent Technology in Welding and Joining for the 21st Century.
Proceedings, International Welding/Joining Conference, Gyeongju, Korea, 28-
30 Oct.2002. Publ: [Daejeon, 305-343 Korea]; Korea Welding Society; 2002.
QA/NDT Session. Paper QN-1. pp.390-395. 5 fig., 2 tab., 11 ref.
NO - [CD-ROM] [Similar paper: Pipeline Repairs. Proceedings, International
Conference, Wollongong, 5-6 Mar.2001. Paper 16. 14pp; Weldasearch
202679] [See also Weldasearch 208546]
LO - KOREA
LA - ***English*** (Eng)
AV - CA (Copies Available)
DT - ***C*** (Conference paper)
PY - 2002
FS - T (Technical)
TC - T (Theoretical)
SH - REPAIR AND MAINTENANCE; PIPES, PIPELINES AND VESSELS
IT - SYMPOSIA; PIPELINES; CARBON MANGANESE STEELS;
MICROALLOYED STEELS; FINITE ELEMENT ANALYSIS; COMPUTATION;
IN SERVICE OPERATIONS; REPAIR; MAINTENANCE; SLEEVES;
UNDERBEAD CRACKING; COLD CRACKING; CRACKING; DEFECTS;
MMA WELDING; ARC WELDING; GTA WELDING; GAS SHIELDED ARC
WELDING; GAS INDUSTRY; SIMULATING; PROCESS CONDITIONS;
REFERENCE LISTS; FILLET WELDS; BUTT WELDS; TEMPERATURE
DISTRIBUTION; HARDNESS; MECHANICAL PROPERTIES; RESIDUAL
STRESSES; STRESS ANALYSIS; STRESS DISTRIBUTION; STRAIN;
PLASTIC DEFORMATION; DEFORMATION; INTERNAL PRESSURE;
PRESSURE; ENERGY INPUT; HEAT AFFECTED ZONE; WELD ZONE;
STEELS
AB - An axisymmetric finite element model was developed to simulate the
multirun sleeve welding process for in-service repair of API X65 steel
(0.06%C, 1.69%Mn, 0.034%Nb, 0.062%V, 0.022%Ti) gas pipelines of 14.3
mm thickness, and the computed results were compared with experimental
measurements. The model was used to predict temperature distribution,
maximum HAZ hardness and distributions of residual stresses and plastic
strain. MMA welding (TIG root run) with internal pressure was used to create
multirun sleeve fillet and sleeve butt repair welds. The HAZ was determined
and hardness measurements were carried out. The occurrence of cold
cracking was predicted and the effect of gas flow rate on the maximum HAZ
hardness was investigated. The effects of internal pressure on residual stress
and plastic strain distribution were investigated.
Allowable heat input was analysed for the single run fillet welding.
UP - 2003-04
9/184 - WELD - (c)WELD
AN - 210065
TI - Finite element analysis and measurement on the release of residual
stress and non-linear behaviour in weldments by mechanical loading. Part 1:
Experimental examination.
AU - JANG K B; YOON H S; CHO S M
OS - PUKYONG NATIONAL UNIVERSITY; PUSAN NATIONAL
UNIVERSITY
SO - Intelligent Technology in Welding and Joining for the 21st Century.
Proceedings, International Welding/Joining Conference, Gyeongju, Korea, 28-
30 Oct.2002. Publ: [Daejeon, 305-343 Korea]; Korea Welding Society; 2002.
Electric Resistance Welding Session. Paper ER-2. pp.372-377. 9 fig.,
3 tab., 3 ref.
NO - [CD ROM]
LO - KOREA
LA - ***English*** (Eng)
AV - CA (Copies Available)
DT - ***C*** (Conference paper)
PY - 2002
FS - T (Technical)
TC - E (Experimental)
SH - RESIDUAL STRESSES
IT - SYMPOSIA; MECHANICAL STRESS RELIEF; RESIDUAL STRESSES;
STRAIN; STRESS DISTRIBUTION; TENSILE LOADING; LOADING;
RIGIDITY; MECHANICAL PROPERTIES; STRUCTURES; ARC WELDING;
WELDED JOINTS; MILD STEEL; STEELS; UNALLOYED STEELS;
STRUCTURAL STEELS; JOINT PREPARATION
AB - An experimental study was carried out to investigate the non linear
stress-strain behaviour of welded joints under external loading and unloading,
such as the decrease and increase in structure stiffness. SS-400 mild steel
(0.143%C, 0.6565%Mn) plates of thickness 6 mm with varying joint
preparation angles were welded. The welded specimens were then subjected
to mechanical stress relief using tensile loading and unloading tests. Nominal
stress and strain were monitored using strain gauges in the parent metal and
***weld*** ***metal***. The degree of stress relaxation was measured using a
sectioning technique to determine residual stress distribution; stress
distribution in as-welded specimens was also measured.
UP - 2003-04
124/184 - WELD - (c)WELD
AN - 209779
TI - Effect of transformation-temperature of ***weld*** ***metal*** on residual
stress distribution in welded joints.
AU - YAMAMOTO J; MURAMATSU Y; ZENITANI S; HAYAKAWA N;
HIRAOKA K
OS - KAWASAKI STEEL CORP; NATIONAL INSTITUTE FOR MATERIALS
SCIENCE
SO - Trends in Welding Research. Proceedings, 6th International
Conference, Pine
Mountain, GA, 15-19 Apr.2002. Ed: S.A.David, T.DebRoy, J.C. Lippold,
H.B.Smartt, J.M.Vitek. Publ: Materials Park, OH 44073-0002, USA; ASM
International; 2002. ISBN 00-87170-780-2. pp.902-905. 9 fig., 1 tab., 2 ref.
NU - ISBN 0-87170-780-2
LO - JAPAN
LA - ***English*** (Eng)
AV - CA (Copies Available)
DT - ***C*** (Conference paper)
PY - 2002
FS - T (Technical)
TC - T (Theoretical)
SH - COMPUTERS; RESIDUAL STRESSES
IT - SYMPOSIA; FINITE ELEMENT ANALYSIS; RESIDUAL STRESSES;
WELDED JOINTS; FILLER MATERIALS; TRANSFORMATION;
MARTENSITE; TEMPERATURE; HIGH ALLOY STEELS; STRESS
DISTRIBUTION; SHEET; PLATE; COMPUTATION; STEELS
AB - The finite element method (FEM) was used to investigate residual
stresses in welds made using three welding filler materials with different Ms
(martensite start) temperatures. Filler compositions were 0.048-0.070%C,
0.67-1.33%Mn, 1.92-9.48%Ni, max.12.54%Cr. Ms temperatures were 353773 K (80-500 deg.C). Thermo-elastic-plastic analysis was used to calculate
residual stress distributions across the weld for a TIG weld in material of
thickness 4 mm. Effects of Ms temperature and restraint intensity on residual
stresses were calculated using two models: two-dimensional (for thin plate)
and three-dimensional (for thick plate). ABAQUS software was used.
UP - 2003-04
125/184 - WELD - (c)WELD
AN - 209778
TI - Residual stress modification and fatigue life enhancement.
AU - PRASK H J; GNAUPEL-HEROLD T; LUZIN V; FISHER J W; CHENG X;
ROY S
OS - LEHIGH UNIVERSITY; NATIONAL INSTITUTE FOR STANDARDS
AND TESTING; UNIVERSITY OF MARYLAND AT COLLEGE PARK; STATE
UNIVERSITY OF NEW YORK AT STONY BROOK
SO - Trends in Welding Research. Proceedings, 6th International
Conference, Pine Mountain, GA, 15-19 Apr.2002. Ed: S.A.David, T.DebRoy,
J.C. Lippold, H.B.Smartt, J.M.Vitek. Publ: Materials Park, OH 44073-0002,
USA; ASM International; 2002. ISBN 00-87170-780-2. pp.897-901. 8 fig., 16
ref.
NU - ISBN 0-87170-780-2
LO - USA
LA - ***English*** (Eng)
AV - CA (Copies Available)
DT - ***C*** (Conference paper)
PY - 2002
FS - T (Technical)
TC - E (Experimental)
SH - RESIDUAL STRESSES
IT - SYMPOSIA; REFERENCE LISTS; RESIDUAL STRESSES; STRESS
DISTRIBUTION; ULTRASONIC PROCESSING; PEENING; FATIGUE
STRENGTH; MECHANICAL PROPERTIES; RADIOGRAPHY;
NONDESTRUCTIVE TESTING; NEUTRON RADIATION; RADIATION;
CARBON STEELS; STEELS; UNALLOYED STEELS; AUSTENITIC
STAINLESS STEELS; WORK HARDENING; STAINLESS STEELS
NT - FATIGUE IMPROVEMENT
AB - Neutron diffraction measurement was used to measure triaxial residual
stress distributions in ultrasonic impact treatment (UIT) treated and untreated
metals; this was part of a study to investigate the effect of UIT on the residual
stresses and fatigue life of welded structures. UIT was carried out on un-
welded plates of thickness 12.7 mm (0.5 in) of A572 Gr 50 carbon steel and
AL6-XN non-magnetic stainless steel.
UP - 2003-04
126/184 - WELD - (c)WELD
AN - 209777
TI - Residual stress mapping in welds using the contour method.
AU - PRIME M B; HILL M R; DeWALD A T; SEBRING R J; DAVE V R; COLA
MJ
OS - LOS ALAMOS NATIONAL LABORATORY; UNIVERSITY OF
CALIFORNIA AT DAVIS
SO - Trends in Welding Research. Proceedings, 6th International
Conference, Pine Mountain, GA, 15-19 Apr.2002. Ed: S.A.David, T.DebRoy,
J.C. Lippold, H.B.Smartt, J.M.Vitek. Publ: Materials Park, OH 44073-0002,
USA; ASM International; 2002. ISBN 00-87170-780-2. pp.891-896. 11 fig., 8
ref.
NU - ISBN 0-87170-780-2
LO - USA
LA - ***English*** (Eng)
AV - CA (Copies Available)
DT - ***C*** (Conference paper)
PY - 2002
FS - T (Technical)
TC - E (Experimental)
SH - RESIDUAL STRESSES
IT - SYMPOSIA; RESIDUAL STRESSES; STRESS DISTRIBUTION;
WELDED JOINTS; DISSIMILAR MATERIALS; SHAPE; MEASUREMENT;
GTA WELDING; ARC WELDING; GAS SHIELDED ARC WELDING; PLATE;
AUSTENITIC STAINLESS STEELS; STAINLESS STEELS; STEELS;
INERTIA FRICTION WELDING; FRICTION WELDING; FINITE ELEMENT
ANALYSIS; COMPUTATION; THICK; ALUMINIUM; LIGHT METALS;
SUBMERGED ARC WELDING
AB - A contour method for measuring a full cross-sectional map of residual
stresses is presented and its application to a number of different welds is
described. The method involves cutting the part in two using electric
discharge machining and measuring the contour of the new surface. The
measured contour is used to calculate the original residual stresses using
finite element analysis. The contour method was validated by comparing
measurements on a multirun TIG welded BS 4360 grade 50D ferritic steel
plate of thickness 12.5 mm with neutron diffraction measurements. The
method was then used on submerged arc butt welds in thick plates (37 mm)
of pressure vessel steel and on 316L stainless steel rods inertia friction
welded to aluminium rods.
UP - 2003-04
127/184 - WELD - (c)WELD
AN - 209774
TI - Quantitative three-dimensional X-ray microprobe measurements of
plastic and elastic deformation in welds.
AU - ICE G E; WALKER F J; LARSON B C; CHUNG J S; DAVID S A;
OHRINER E K
OS - OAK RIDGE NATIONAL LABORATORY
SO - Trends in Welding Research. Proceedings, 6th International
Conference, Pine Mountain, GA, 15-19 Apr.2002. Ed: S.A.David, T.DebRoy,
J.C. Lippold, H.B.Smartt, J.M.Vitek. Publ: Materials Park, OH 44073-0002,
USA; ASM International; 2002. ISBN 00-87170-780-2. pp.873-877. 8 fig., 14
ref.
NU - ISBN 0-87170-780-2
LO - USA
LA - ***English*** (Eng)
AV - CA (Copies Available)
DT - ***C*** (Conference paper)
PY - 2002
FS - T (Technical)
TC - E (Experimental)
SH - NONDESTRUCTIVE TESTING; WELDABILITY AND METALLURGY
IT - SYMPOSIA; X RAYS; RADIATION; CHEMICAL ANALYSIS;
MICROANALYSIS; MICROSTRUCTURE; PLASTIC DEFORMATION;
DEFORMATION; ELASTIC DEFORMATION; RADIOGRAPHY;
NONDESTRUCTIVE TESTING; STRAIN; REFERENCE LISTS
AB - A three dimensional X-ray crystal microscope was developed to study
the three dimensional distributions of chemistry, phase, grain orientation,
strain and plastic deformation; its use is illustrated for the investigation of weld
samples. The microscope was used to investigate iridium weld samples. The
distribution of tungsten trace elements in the welds was determined. The local
texture, stress state, elastic strain and plastic deformation were investigated.
UP - 2003-04
131/184 - WELD - (c)WELD
AN - 209767
TI - Finite element prediction of residual stresses in a fillet welded T-joint.
AU - WU A H; SYNGELLAKIS S; MELLOR B
OS - UNIVERSITY OF SOUTHAMPTON
SO - Trends in Welding Research. Proceedings, 6th International
Conference, Pine Mountain, GA, 15-19 Apr.2002. Ed: S.A.David, T.DebRoy,
J.C. Lippold, H.B.Smartt, J.M.Vitek. Publ: Materials Park, OH 44073-0002,
USA; ASM International; 2002. ISBN 00-87170-780-2. pp.832-837. 11 fig., 11
ref.NU - ISBN 0-87170-780-2
LO - UK
LA - ***English*** (Eng)
AV - CA (Copies Available)
DT - ***C*** (Conference paper)
PY - 2002
FS - T (Technical)
TC - T (Theoretical)
SH - RESIDUAL STRESSES
IT - SYMPOSIA; SIMULATING; FINITE ELEMENT ANALYSIS;
COMPUTATION; FILLET WELDS; RESIDUAL STRESSES; STRESS
DISTRIBUTION; STRESS ANALYSIS; REFERENCE LISTS; T JOINTS;
STRUCTURAL STEELS; PLATE; GMA WELDING; DISTORTION;
DEFORMATION; TEMPERATURE; PREDICTION; STEELS; ARC WELDING;
GAS SHIELDED ARC WELDING
AB - A finite element (FE) simulation of the sequential welding of the fillet
welds each side of a T joint to predict distortion and residual stresses is
presented and validated experimentally. The simulation involved a two
dimensional analysis with a ramped heat input function, temperature
dependent material properties and an element death and rebirth technique.
MIG welding was used to create a T joint using plates of thickness 11.86 mm
of BS 4360:1986 grade 43A steel, creating two single run fillet welds
sequentially. The material plastic properties in the weld area were determined
to provide input to the FE model. Temperature history and distortion were
measured for validation of the model predictions. Residual stress distributions
predicted by the FE model are presented.
UP - 2003-04
132/184 - WELD - (c)WELD
AN - 209766
XR - 203130
TI - Comparison of deformation pattern and residual stresses in finite element
models of a TIG-welded stainless steel plate.
AU - BERGLUND D; RUNNEMALM H
OS - LULEA UNIVERSITY OF TECHNOLOGY; VOLVO AERO CORP
SO - Trends in Welding Research. Proceedings, 6th International
Conference, Pine Mountain, GA, 15-19 Apr.2002. Ed: S.A.David, T.DebRoy,
J.C. Lippold, H.B.Smartt, J.M.Vitek. Publ: Materials Park, OH 44073-0002,
USA; ASM International; 2002. ISBN 00-87170-780-2. pp.826-831. 12 fig., 2
tab., 18 ref.
NO - [See also Weldasearch 203130]
NU - ISBN 0-87170-780-2
LO - SWEDEN
LA - ***English*** (Eng)
AV - CA (Copies Available)
DT - ***C*** (Conference paper)
PY - 2002
FS - T (Technical)
TC - T (Theoretical)
SH - RESIDUAL STRESSES
IT - SYMPOSIA; FINITE ELEMENT ANALYSIS; COMPUTATION;
SIMULATING; RESIDUAL STRESSES; DEFORMATION; GTA WELDING;
ARC WELDING; GAS SHIELDED ARC WELDING; STAINLESS STEELS;
STEELS; SHEET; COMPARISONS; STRESS DISTRIBUTION; STRESS
ANALYSIS; REFERENCE LISTS
AB - An investigation was carried out to determine if simplified finite element
(FE) simulation models could replace more detailed analysis when
determining deformation and residual stresses in TIG welded stainless steel
plates, for the preliminary design stages in product development. Results from
a two dimensional plane strain model and a three dimensional shell model
were compared with those from a three dimensional solid model. Analyses
were performed for butt welding of martensitic stainless steel sheet of
thickness 1.7 mm.
UP - 2003-04