Application-Oriented Digital Image Correlation for the High-Speed Deformation and Fracture Analysis of AISI 1045 and Ti6Al4V Materials

Gerdes, Lars; Berger, Sebastian; Saelzer, Jannis; Franck, Pascal; Helwing, Ramon; Zabel, Andreas; Walther, Frank

doi:10.3390/applmech3040068

Cited by 3 publications

(1 citation statement)

References 30 publications

(40 reference statements)

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“…Currently, several methods can be used to study the damage process in impact dynamics, and the most popular method is high-speed (HS) photography to record the entire damage process, including fractal analysis [40,41] and deep learning [42,43]. However, in the analysis of the images, more scholars tend to analyse them qualitatively but fail to quantify them.…”

Section: Process Of Crack Propagation and Specimen Failure 331 Recogn...mentioning

confidence: 99%

Experimental Study of the Multiple Fractalisation of Coal and Rock Failure Subjected to the Coupled Effects of Water, Temperature and Dynamic Loads

Jin,

Sun,

Liu

et al. 2023

Applied Sciences

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The mechanical properties of water-rich coal and rock in a subzero environment are very different from those at room temperature, which causes many unexpected hazards for projects. In this study, coal and rock samples subjected to the coupled effects of water, temperature, and dynamic loads were taken as the research object, and the discussion was shaped around their mechanical properties. The crack evolution trend and different gradient impact velocities were determined using a split-Hopkinson pressure bar (SHPB). Multiple fractals were based on high-speed digital image correlation (HS-DIC) technology and the quality-screening method; the evolution trend of the surface cracks in the crushing process and the distribution characteristics of the specimen fragments after crushing were examined from the perspective of fractals. This provided a powerful supplement to the existing research system on the problem of mining via the freezing method, and it accounted for the shortcomings of the existing research to a certain extent. In this research, the results mainly showed four points: (1) The coal samples were determined to have a wave velocity between 1.68 and 2.01 km/s, while the rock samples were between 2.24 and 2.61 km/s. Under the same conditions, the rock’s resistance to deformation and damage was greater than that of coal. (2) In the saturated state, the plastic strength of the coal and rock samples was greater than that in the dry state, due to the strengthening of their internal stresses caused by the presence of fissure water. (3) With decreasing temperature, the degree of the dynamic compression factor of coal and rock showed a trend of initially increasing, then decreasing, and then increasing. With the increase in the loading rate, the destruction of the coal and rock was more intense, and the destruction process was accelerated. (4) After the saturated coal and rock samples were frozen, their interiors were affected by the dual factors of contraction under the influence of temperature and expansion under the influence of the freezing expansion force. The internal fissures closed or shrank, and the water in the pores turned into ice, leading to an increase in pore volume.

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Section: Process Of Crack Propagation and Specimen Failure 331 Recogn...mentioning

confidence: 99%

Experimental Study of the Multiple Fractalisation of Coal and Rock Failure Subjected to the Coupled Effects of Water, Temperature and Dynamic Loads

Jin,

Sun,

Liu

et al. 2023

Applied Sciences

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show abstract

Influence of Geometric Parameters of the Secondary Plastic Deformations Zone on the Temperature Distribution on the Rake Face of the Lathe Cutter

Fominov

Shuchev

Sukhomlinova

et al. 2023

Lecture Notes in Mechanical Engineering

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Investigation on Shear Band Formation at High Strain Rates with a Split Hopkinson Bar Setup

Jentzsch,

Stock,

Häcker

et al. 2024

Preprint

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Application-Oriented Digital Image Correlation for the High-Speed Deformation and Fracture Analysis of AISI 1045 and Ti6Al4V Materials

Cited by 3 publications

References 30 publications

Experimental Study of the Multiple Fractalisation of Coal and Rock Failure Subjected to the Coupled Effects of Water, Temperature and Dynamic Loads

Experimental Study of the Multiple Fractalisation of Coal and Rock Failure Subjected to the Coupled Effects of Water, Temperature and Dynamic Loads

Influence of Geometric Parameters of the Secondary Plastic Deformations Zone on the Temperature Distribution on the Rake Face of the Lathe Cutter

Investigation on Shear Band Formation at High Strain Rates with a Split Hopkinson Bar Setup

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