... The theoretical background for the J-Q-M approach for quantifying the constraint in weldments for fusion line cracks is presented. In this model, Q quantifies the geometry effects and M the material mismatch effects. Initially the approach was developed for a two-material modified boundary...

... a simpler representation of the spot weld that can be used in car crash simulation models. weldments impact failure resistance spot welds overload conditions Steve Zuniga I and Sheri D. Sheppard2 Resistance Spot Weld Failure Loads and Modes in Overload Conditions REFERENCE: Zuniga, S...

... and the tensile strength of this material which is used in microelectromechanical systems (MEMS). interferometry lasers microspecimens polysilicon thin films weldments MEMS William N. Sharpe, Jr. ! and Bin Yuan2 NEW APPLICATIONS OF THE INTERFEROMETRIC STRAIN/DISPLACEMENT GAGE REFERENCE: Sharpe, W...

... An austenitic stainless steel, 316F, irradiated in the High Flux Isotope Reactor to doses of about 8 to 33 dpa at 400° and 500°C was investigated. Electron beam (EB) welding and metal inert gas (MIG) welding techniques were used to make weldment specimens. Weldment specimens were made from...

... The microstructure of an off-normal 12%Cr FV448-grade ferritic-martensitic weldment with 4.7 wt.% nickel addition has been compared with that of parent plate following fast reactor irradiation at 465°C to damage levels in the range 28–46 dpa. The fully martensitic weld metal exhibits instability...

... Small-scale tension specimens taken transversely from similar weldments of 12% Cr steel as well as small- and large-scale specimens from dissimilar weldments of 12% Cr/1% CrMoV with 12% Cr deposit were tested to obtain creep rupture data at 550°C. For the similar weld, the rupture time...

... weldments wide plate tests fracture mechanics defect assessment structural analysis fatigue (materials) Stig Berge, 10ddvar L Eide, 2and Masahiko Fujikubo 3 Level-3 Crack-Tip Opening Displacement (CTOD) Assessment of Welded Wide Plates in Bending Effectof OvermatchingWeld Metal REFERENCE: Berge,S...

... of defect types in steel castings and wasadopted by ASTM in 1952 following the formation of Subcommittee E7.02 on Reference Radiographs. ASTM currently maintains 13 reference radiograph documents covering castings of a wide variety of materials and steel weldments. All current documents are produced using...

.... However, for fatigue data to be of value, it is essential to identify and control many factors associated with the fatigue test itself. The present paper summarizes the main parameters to be controlled when performing weldment fatigue tests. Four distinct areas are discussed—specimen design...

... Fatigue crack growth rate experiments were performed on compact tension specimens of base plate and weldments of 5456-H116 aluminum and of base plate and the heat-affected zone (HAZ) of ASTM A710 Grade A steel. Stress ratios for the tests were 0.1 for both materials, with the aluminum weld also...

... are introduced. weldments aluminum welding fatigue residual stresses component testing data evaluation D. Erickson I and D. Kosteas 1 Assessing Transverse Fillet Weld Fatigue Behavior in Aluminum from Full-Size and Small-Specimen Data REFERENCE: Erickson, D. and Kosteas, D., "Assessing Transverse...

... Fatigue crack initiation and growth in SAE 960X steel tensile-shear spot welds were studied by sectioning companion specimens and by replicating the exposed site of crack initiation in a presectioned weldment. Constant-amplitude R = 0 and R = -1 tests, as well as variable-load history tests...

.... On the other hand, no effect of the material strength was apparent. Limited data for the cathodically polarized specimens indicated improvement in fatigue life over that for the freely corroding specimens and for higher strength steels over structural steels. weldments structural steels high-strength...

... to explain this unusual crack growth feature. weldments offshore tubular joints corrosion fatigue fracture mechanics modeling fatigue crack growth wave action standard history (WASH) realistic service history automated fatigue testing S. Dharmavasan, 1 J. C. P. Kam, 1 and W. D. DoveP...

... structural steels). These data are statistically analyzed to show that for welds containing LBZs, a low CTOD result becomes more probable if the crack samples more CGHAZ. weldments structural steels heat-affected zone fracture toughness crack-tip opening displacement local brittle zones...

... Several precracking methods for crack-tip opening displacement (CTOD) testing of weldments were studied, including as local precompression, reverse bending, and high R -ratio fatigue. The precracking procedure could influence the validity of the precrack shape. However, it was found...

.... The presentation provides a step-by-step analysis of the actual testing requirements. Particularly, emphasis is given to detailed metallographic posttest validation requirements for the crack tip location. weldments wide-plate testing crack-tip opening displacement (CTOD) Charpy V-notch impact test...

... testing with respect to fracture initiation behavior problems only. This paper also addresses the role, as well as the limitations, of wide-plate testing in fracture research. weldments wide-plate testing crack-tip opening displacement (CTOD) Charpy V-notch impact test brittle fracture residual...

... This paper, which is Part II of this series on wide-plate testing of weldments, reviews various wide-plate test specimen designs in relation to their intended uses. In addition, some specimen designs are discussed which are recommended for particular structural details that cannot be modeled...

... This paper, Part III in this series on wide-plate testing of weldments, reviews the latest developments in wide-plate test procedures used for evaluation of the heat-affected zone (HAZ) toughness in steel weldments. In particular, emphasis is placed on the transversely loaded wide-plate test...