Analysis of the aspects of residual stresses quantification performed by 3D DIC combined with standardized hole-drilling method

Hagara, Martin; Trebuňa, František; Pástor, Miroslav; Huňady, Róbert; Lengvarský, Pavol

doi:10.1016/j.measurement.2019.01.028

Cited by 32 publications

(24 citation statements)

References 47 publications

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“…There has been a huge breadth of research that has been undertaken in the numerical modeling of the manufacturing process of fiber reinforced laminates, as Baran et al [3] showed. It is clear that much progress has been made over the past few decades and it is now possible to accurately predict many physical phenomena accurately by choosing and correctly implementing one of the [11,[13][14][15][16] Hole-drilling [19,27] [20] -Potentially global scale if laminate is thin -Bixal stress distribution -Accuracy decreases with depth of cut [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] Ring-core [40][41][42] Note: ?, there is potential but it has not been done to date; , it is possible with some caveats. many models and techniques available.…”

Section: Discussionmentioning

confidence: 99%

“…In Baldi's work [21,22] it was found that the classical DIC method was inherently unsuitable to this application as it is not possible to accurately follow the displacements and have a small standard deviation of results which are both required for meaningful residual stress measurements. However, work from Hagara et al [26] has suggested that standard DIC hole-drilling techniques are still suitable in some circumstances, citing an approximately 3% to 19% difference between DIC and strain gauge rosette results. Baldi [21,22] went on to suggest that these problems could be overcome by implementing an integrated digital image correlation approach.…”

Section: Hole-drilling Methodsmentioning

confidence: 99%

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Residual stress in fiber reinforced thermosetting composites: A review of measurement techniques

2021

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Residual stress is inherent in any fiber reinforced composite, created by the laminates processing route and high levels of anisotropy. The aim of this article is to provide an up to date review of the current state of the art in experimental techniques for the determination of residual stress in thermosetting fiber reinforced composites. Residual stress is considered at a micro-mechanical, macro-mechanical, and global scale as each require specific techniques to investigate and offer their own unique challenges to the designer. Many advances have been made in the experimental determination of residual stress in fiber reinforced composites since the last comprehensive review of the topic by Shokrieh in 2014. However, more work still needs to be done to develop a method that is applicable to all cases and can be applied as a universal standard. It remains a significant challenge to experimentally determine residual stress in thermosetting composites.

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Section: Discussionmentioning

confidence: 99%

Section: Hole-drilling Methodsmentioning

confidence: 99%

Residual stress in fiber reinforced thermosetting composites: A review of measurement techniques

2021

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“…Due to the fact that in the authors workplace we have extensive experience with the use of experimental methods to solve problems for practice [13,14,15], we decided to verify the results of experimental measurements for the determination of residual stress obtained by the drilling method using the Photostress optical method. It should be noted that the use of optical methods (DIC, ESPI) in combination with drilling is addressed by several authors [16,17].…”

Section: Quantification Of Residual Stress Using Photostress Methodsmentioning

confidence: 99%

The Assessment of the Residual Stresses Influence on Generation of the Infringement in Shape-Complex Supporting Members

Pástor

Čarák

Gömöry

2019

Strojnícky Časopis - Journal of Mechanical Engineering

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The aim of the paper is to assess the effect of residual stresses on the damage of the slide bearer. To quantify the residual stresses, the drilling method using SINT MTS 3000 drilling machine was chosen. The tensometric rosette application areas were determined based on the analysis of the results obtained by numerical modeling using the finite element method. Experimental measurement was performed on one unused slide bearer and on the other one, which during its present operation had completed about 9.106cycles. At the end of the paper, the analysis of the measured residual stress values in chosen locations is presented.

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“…As with the hole-drilling method the stress concentrator occurs in the specimen, the authors used a filter of local regression. Several studies described, e.g., in [ 33 , 34 ] were conducted on the proper setting of the local regression level. For the illustration, the authors point to the effect of local regression in Figure 14 , which shows the relieved strain intensity fields obtained by different levels of smoothing.…”

Section: Experimental Measurementsmentioning

confidence: 99%

Design of a Unique Device for Residual Stresses Quantification by the Drilling Method Combining the PhotoStress and Digital Image Correlation

et al. 2021

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This paper presents a uniquely designed device combining the hole-drilling technique with two optical systems based on the PhotoStress and digital image correlation (DIC) method, where the digital image correlation system moves with the cutting tool. The authors aimed to verify whether the accuracy of the drilled hole according to ASTM E837-13a standard and the positioning accuracy of the device were sufficient to achieve accurate results. The experimental testing was performed on a thin specimen made from strain sensitive coating PS-1D, which allowed comparison of the results obtained by both methods. Although application of the PhotoStress method allows analysis of the strains at the edge of the cut hole, it requires a lot of experimenter’s practical skills to assess the results correctly. On the other hand, the DIC method allows digital processing of the measured data. However, the problem is not only to determine the data at the edge of the hole, the results also significantly depend on the smoothing levels used. The quantitative comparison of the results obtained was performed using finite element analysis.

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Analysis of the aspects of residual stresses quantification performed by 3D DIC combined with standardized hole-drilling method

Cited by 32 publications

References 47 publications

Residual stress in fiber reinforced thermosetting composites: A review of measurement techniques

Residual stress in fiber reinforced thermosetting composites: A review of measurement techniques

The Assessment of the Residual Stresses Influence on Generation of the Infringement in Shape-Complex Supporting Members

Design of a Unique Device for Residual Stresses Quantification by the Drilling Method Combining the PhotoStress and Digital Image Correlation

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