Measured strains correction for eccentric holes in the determination of non-uniform residual stresses by the hole drilling strain gauge method

Peral, David; Correa, Carlos A.; Díaz, María Asunción Romero; Porro, J.A.; Vicente, Javier de; Ocaña, José L.

doi:10.1016/j.matdes.2017.06.051

Cited by 20 publications

(11 citation statements)

References 31 publications

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“…To make calculation of the distribution of non-uniform stresses more accurate, the evaluation of residual stresses was carried out by applying the general method, based on the influence functions, proposed by Beghini et al [8,9]. This approach is more extensive with respect to the integral method proposed by Schajer [13,14] and can include a dependency on a higher number of parameters. This more general approach avoids some errors and removes some limitations in the evaluation of non-uniform residual stresses deriving from the application of the ASTM E837-13a standard, which is based on the Integral method.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advancements in the Hole-Drilling Strain-Gage Method for Determining Residual Stresses

Valentini¹,

Bertelli²,

Benincasa³

et al. 2020

New Challenges in Residual Stress Measurements and Evaluation

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The hole-drilling Strain-Gage method is a widely used and cost-effective technique for the evaluation of residual stresses. The test method is standardized by ASTM E837-13a, which defines the scope, measurement range, minimum requirements of instrumentation, test procedure, and algorithms and coefficients for the computation of uniform and non-uniform stress distribution. However, the standardized test method presents some limitations regarding the scope and measurement range; moreover, some typical errors involved in the measurements are not taken into account, i.e., errors due to the hole eccentricity, the local plasticity, the intermediate thickness, and the hole-bottom chamfer, which can affect the results in some cases. Also, the standard does not provide the user with a complete guide regarding the evaluation of the uncertainty connected with this type of measurement. The paper presents a more general approach that allows the correction of some errors and overcomes and some limitations of the ASTM E837-13a test method, contributing to greater accuracy of the test results.

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Section: Discussionmentioning

confidence: 99%

“…With this correction, the measurements could be acceptable even in cases where the limit set by the standard is exceeded. Over the years, several approaches have been proposed for the correction of this effect [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Recent Advancements in the Hole-Drilling Strain-Gage Method for Determining Residual Stresses

Valentini¹,

Bertelli²,

Benincasa³

et al. 2020

New Challenges in Residual Stress Measurements and Evaluation

View full text Add to dashboard Cite

show abstract

“…There are two case studies; uniform and nonuniform stresses. The most popular method for estimating non-uniform stresses is the critical method, which calculates constant stresses within each depth [163]. Peral et al [164] reported the stress analysis on the hole-drilling strain gauge method.…”

Section: Strain Gauge Hole Drilling Methodsmentioning

confidence: 99%

Assessment of Process, Parameters, Residual Stress Mitigation, Post Treatments and Finite Element Analysis Simulations of Wire Arc Additive Manufacturing Technique

Kumar

Manikandan

2021

Met. Mater. Int.

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Wire arc additive manufacturing (WAAM) technique became an emerging manufacturing technology because of its costeffective in creating large-scale metal parts with moderately high deposition rates. Mainly, WAAM works through the utilization of heat source as an electric arc by melting the metal wire to build the three-dimensional metal parts in a layer-by-layer approach, which may significantly minimize the fabrication costs compared to powder and other additive manufacturing techniques such as laser and electron beam, similarly. This article reviews WAAM processes and methods and gives an exhaustive overview of the residual stresses, microstructures, and material properties of the as-fabricated and post-fabrication treated WAAM components. The typical defects during the fabrication of metal components by the WAAM process are residual stresses, deformity, porosity, and cracking. And also, methods on controlling residual stresses, improving material properties, and effects of post-processing treatments to enhance the part quality fabricated by using the WAAM process are recommended in this review. Finally, the measurement methods of residual stresses in the metal parts and FEA simulations in the WAAM are discussed. FEA simulations provide better insights on moving heat source model, temperature distributions, and residual stresses in the WAAM process. This article concludes that selecting process parameters affects the quality WAAM component during the deposition process. And also, approaches to improving the part quality are proposed. The materials fabrication issues in the WAAM processes were outlined, and the advanced WAMM processes were suggested to obtain high quality and defect-free WAAM parts.

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“…The eccentricity between the hole and the rosette is another parameter that significantly affects the accuracy of the measurement. [15][16][17][18][19][20] Vangi 15 and Peral et al 20 studied the effect produced by the eccentricity in the evaluation of non-uniform residual stresses. Beghini et al 16,17 modelled the effect of the eccentricity by introducing dedicated influence functions.…”

Section: Introductionmentioning

confidence: 99%

Measuring residual stress in finite thickness plates using the hole-drilling method

Beghini

Bertini

Giri

et al. 2019

The Journal of Strain Analysis for Engineering Design

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Hole-drilling is one of the most popular methods for measuring residual stress in mechanical components. The ASTM E837 standard defines the hole-drilling method for plates that are either thicker or thinner than the size of the hole diameter and provides the related calibration coefficients for these two conditions. Measurements for components with a thickness in the range of a few millimetres, such as typical metal sheets, are not considered. In this article, the effects of thickness on the hole-drilling measurements are examined by a finite element parametric analysis. A method is proposed to analyse the measurements in plates with an intermediate thickness. The procedure is suitable for determining a general in-depth non-uniform residual stress distribution. Mathematical relationships are proposed which enable calibration coefficients to be obtained for any thickness. An experimental application confirms the validity of the procedure.

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Measured strains correction for eccentric holes in the determination of non-uniform residual stresses by the hole drilling strain gauge method

Cited by 20 publications

References 31 publications

Recent Advancements in the Hole-Drilling Strain-Gage Method for Determining Residual Stresses

Recent Advancements in the Hole-Drilling Strain-Gage Method for Determining Residual Stresses

Assessment of Process, Parameters, Residual Stress Mitigation, Post Treatments and Finite Element Analysis Simulations of Wire Arc Additive Manufacturing Technique

Measuring residual stress in finite thickness plates using the hole-drilling method

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