Axially symmetrical stresses measurement in the cylindrical tube using DIC with hole-drilling

Ma, Yinji; Yao, Xuefeng; Dan-wen, Zhang

doi:10.1016/j.optlaseng.2014.09.009

Cited by 13 publications

(6 citation statements)

References 22 publications

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“…The presence of strong compressive stress component played a vital role in the development of thick multilayer layer coatings. The presence of compressive stresses in the laser cladded LC1 is confirmed by the hole drilling method [37,38]. The residual stress measurements was carried out by using the incremental strain method [39].…”

Section: Discussionmentioning

confidence: 97%

Development and characterization of multilayer laser cladded high speed steels

Rahman¹,

Capuano²,

Meer³

et al. 2018

Additive Manufacturing

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Two high speed steel (HSS) alloys were laser cladded on 42CrMo 4 steel cylindrical substrate by using a 4 kW Nd:YAG laser source. After optimization of the laser material processing parameters for single layers, multilayered clads were produced. Microstructural characterization of the laser deposits constitutes studies of the carbides and matrix, which was done by using Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Electron Backscattered Diffraction (EBSD) and High Resolution Transmission Electron Microscopy (HRTEM). The strengthening mechanism of LC1 (Fe-Cr-MoW -V) was comprised of a martensitic matrix and retained austenite along with networks of VC and Mo 2 C eutectic carbides. Cr enriched fine carbides (Cr 7 C 3 and Cr 23 C 6) were embedded within the matrix. During laser cladding of the multilayer

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Section: Discussionmentioning

confidence: 97%

Development and characterization of multilayer laser cladded high speed steels

Rahman¹,

Capuano²,

Meer³

et al. 2018

Additive Manufacturing

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“…It is proved in reference [14] that Newton-Raphson (N-R) algorithm is an excellent numerical optimization algorithm for solving nonlinear equations. On this basis, the displacement and deformation information of the image before and after deformation are determined by iteration, so as to obtain the exact strain and other information [15].…”

Section: ∂C ∂mentioning

confidence: 99%

Research on refraction error correction of digital image correlation technology in strain measurement of airship skin

Zhao

Wang

Zhou

et al. 2020

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Digital image correlation method is a widely used non-contact deformation measurement method. However, in low temperature environment the airships stay in, the camera needs to be protected by thermal insulation device, the optical glass of which introduces the refraction error to photogrammetry technology. To solve the influence of refraction error on the deformation measurement accuracy of digital image correlation method, the displacement deviation caused by refraction is theoretically deduced to obtain the deviation model based on the analysis of refraction light path and digital image correlation method. Moreover, the corresponding refraction error correction based on deformation function is proposed. Through the contrast experiment, it is found that the refraction offset error model is consistent with the actual displacement deviation. The digital image correlation method based on the refraction error correction proposed in this paper can effectively depress the refraction effect of glass, reduce the measurement error and improve the deformation measurement accuracy.

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“…The hole drilling technique in combination with DIC has been employed in several studies [36][37][38][39][40]. Numerical parameters such as subset size, step size and region of interest are common concerns for the DIC measurements due to the use of numerical correlation between captured images to handle displacement data [41].…”

Section: Introductionmentioning

confidence: 99%

Investigation of transverse residual stresses in a thick pultruded composite using digital image correlation with hole drilling

Yuksel

Baran

Ersoy

et al. 2019

Composite Structures

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Process induced residual stresses are one of the main sources of defects such as (pre)mature matrix cracking during pultrusion of fiber reinforced polymer composite profiles. Recently, comprehensive process models have been developed to understand and describe the underlying mechanisms of the residual stresses in pultrusion processes. The predicted stresses however have not been validated with experimental measurements which are necessary to verify the implemented material models and assumptions in the process models. A hole drilling method with digital image correlation (DIC) is used in the present work to measure the transverse strain relaxation due to material removal in a pultruded thick composite profile (20×20 mm) made of unidirectional glass/polyester. The corresponding residual stress state is back calculated using the measured strains in a finite element based numerical model. The estimated level of transverse residual stress in the core of the profile was found to be 6.1 MPa in tension.

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Axially symmetrical stresses measurement in the cylindrical tube using DIC with hole-drilling

Cited by 13 publications

References 22 publications

Development and characterization of multilayer laser cladded high speed steels

Development and characterization of multilayer laser cladded high speed steels

Research on refraction error correction of digital image correlation technology in strain measurement of airship skin

Investigation of transverse residual stresses in a thick pultruded composite using digital image correlation with hole drilling

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