Two-dimensional mapping of residual stresses in a thick dissimilar weld using contour method, deep hole drilling, and neutron diffraction

Woo, Wanchuck; An, Gyubaek; Truman, Christopher E; Jiang, Wenchun; Hill, Michael R.

doi:10.1007/s10853-016-0283-z

Cited by 15 publications

(10 citation statements)

References 28 publications

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“…Stress measurement methods 1 such as sectioning, hole drilling, X-ray diffraction, neutron diffraction, the magnetoelastic method, and ultrasound can be used to measure absolute stress. The sectioning 8 and hole-drilling 9 methods are both destructive to members and thus are not recommended for use on existing structures. X-ray diffraction, 10 neutron diffraction, 11 and the magnetoelastic method 12 can only be used on the laboratory scale and are generally not suitable for on-site applications because the required equipment is complex.…”

Section: Introductionmentioning

confidence: 99%

Absolute stress measurement of structural steel members with ultrasonic shear-wave spectral analysis method

Teng

et al. 2017

Structural Health Monitoring

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Absolute stress in structural steel members is an important parameter for the design, construction, and servicing of steel structures. However, it is difficult to measure via traditional approaches to structural health monitoring. The ultrasonic time-of-flight method has been widely studied for monitoring absolute stress by measuring the change in ultrasonic propagation time induced by stress. The time-of-flight of the two separated shear-wave modes induced by birefringence, which is particular to shear waves, is also affected by stress to different degrees. Their synthesis signal amplitude spectrum exhibits a minimum that varies with stress, which makes it a potential approach to evaluating uniaxial stress using the shear-wave amplitude spectrum. In this study, the effect of steel-member stress on the shear-wave amplitude spectrum from the interference of two shear waves produced by birefringence is investigated, and a method of uniaxial absolute stress measurement using shear-wave spectral analysis is proposed. Specifically, a theoretical expression is derived for the shear-wave pulse-echo amplitude spectrum, leading to a formula for evaluating uniaxial absolute stress. Three steel-member specimens are employed to investigate the influence of uniaxial stress on the shear-wave pulse-echo amplitude spectrum. The testing results indicate that the amplitude spectrum changes with stress and that the inverse of the first characteristic frequency in the amplitude spectrum and its corresponding stress exhibit a near-perfect linear relationship. On this basis, the uniaxial absolute stress of steel members loaded by a test machine is measured by the proposed method. Parametric studies are further performed on three groups of steel members made of 65# steel and Q235 steel to investigate the factors that influence the testing results. The results show that the proposed method can measure and monitor steel-members uniaxial absolute stress on the laboratory scale and has potential to be used in practical engineering with specific calibration.

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Section: Introductionmentioning

confidence: 99%

Absolute stress measurement of structural steel members with ultrasonic shear-wave spectral analysis method

Teng

et al. 2017

Structural Health Monitoring

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“…The forces required to ensure that the measured deformed surface is returned to its original position are directly correlated to the residual stress. The method provides a 2D map having a regular resolution of the residual stress normal to the cut surface [14,15].…”

Section: Contour Methodsmentioning

confidence: 99%

“…The validity of CM measurements has been assessed by comparing its results with those from neutron diffraction, X-ray (lab and synchrotron) diffraction and hole drilling [15,18,[24][25][26].…”

Section: Residual Stress Analysis On Welded Joints By Means Of Numerimentioning

confidence: 99%

“…CM has found a number of applications; some of them are of particular relevance such as butt joints of S355 structural steel [28], 80-mm thick ferritic steel welds [24], 70-mm thick dissimilar metal (ferritic to austenitic) welds [15] and ferritic steel plates welded using low and very high heat input processes [25], friction stir welds between 25.4-mm thick plates of aluminum alloys 7050-T7451 and 2024-T351 [29], 2024-T351 aluminum alloy VPPA welds [19], welded Tee-joints [22], welds of 13% Cr-4% Ni steel [30,31], 316L stainless steel bead-on-plate specimens [32] and AA6061-T6 aluminum alloy friction stir butt welds [33].…”

Section: Residual Stress Analysis On Welded Joints By Means Of Numerimentioning

confidence: 99%

“…While the sectioning technique is easier to determine residual stress over weld cross sections since almost no calculations are needed, CM provides a higher spatial resolution (1 mm spacing) [15].…”

Section: Residual Stress Analysis On Welded Joints By Means Of Numerimentioning

confidence: 99%

See 2 more Smart Citations

Experimental Techniques to Investigate Residual Stress in Joints

Montanari¹,

Fava²,

Barbieri³

2018

Residual Stress Analysis on Welded Joints by Means of Numerical Simulation and Experiments

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Residual stress arising from welding processes is matter of great concern in industrial practice since it can affect geometry, mechanical behavior and corrosion resistance of components. In order to evaluate residual stress in welded joints and optimize postwelding heat treatments, a lot of work has been devoted to the improvement of measurement methods with increasing sensitivity and accuracy. The chapter presents and discusses some of the experimental techniques commonly used today to determine residual stress in welds and describes recent results and advancements. Destructive (sectioning, contour, hole-drilling, instrumented indentation) and nondestructive (Barkhausen noise, ultrasonic, X-ray and neutron diffraction) methods are illustrated to highlight the specific characteristics, advantages and drawbacks.

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Residual Stress in Engineering Materials: A Review

et al. 2021

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The accurate determination of residual stresses has a crucial role in understanding the complex interactions between microstructure, mechanical state, mode(s) of failure, and structural integrity. Moreover, the residual stress management concept contributes to industrial applications, aiming to improve the product's service performance and life cycle. In this regard, the industry requests rapid, efficient, and modern methods to identify and control the residual stress state. This review article contains three main sections. The first section covers different residual stress determination methods and reports the advancements over the recent decade. The second section includes the role of residual stresses in the performance of a broad range of materials including metallic alloys, polymers, ceramics, composites, and biomaterials. This is presented by classifying different science areas dealing with residual stresses into two main groups, including “origins” and “effects” of residual stresses. The range of topics covered are “welding, machining, curing/cooling, and spray coating processes,” “medical and dental sciences,” and “fatigue and fracture mechanisms.” The third section summarizes various strategies to effectively control residual stresses through different manufacturing procedures. It is hoped that the data provided herein serves as a valuable up‐to‐date reference for engineers and scientists in the field of residual stress.

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Two-dimensional mapping of residual stresses in a thick dissimilar weld using contour method, deep hole drilling, and neutron diffraction

Cited by 15 publications

References 28 publications

Absolute stress measurement of structural steel members with ultrasonic shear-wave spectral analysis method

Absolute stress measurement of structural steel members with ultrasonic shear-wave spectral analysis method

Experimental Techniques to Investigate Residual Stress in Joints

Residual Stress in Engineering Materials: A Review

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