Evaluation of physical phenomena and surface integrity during hydroabrasive disintegration of the rotating workpiece with feedback loop control

Cárach, Ján; Hloch, Sergej; Petrů, Jana; Müller, Miroslav; Hromasová, Monika; Nag, Akash; Čuha, Dominik; Hlaváček, Petr; Hatala, Michal; Kratochvíl, Jiří; Ruggiero, Alessandro

doi:10.1016/j.measurement.2018.11.009

Cited by 7 publications

(5 citation statements)

References 20 publications

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“…The graph shows an increasing trend of D f with increasing v from 5 mm/min to 25 mm/min for all four technological variations. 30 At v = 5 mm/min, D f for all cases was nearly the same and closer to the calculated D f = 10 mm. This is attributed to the longer interaction time between the rotating workpiece and the AWJ, 12 sec/mm at v = 5 mm/min, compared to 2.4 sec/mm at v = 25 mm/min.…”

Section: Final Diameter (D F )supporting

confidence: 77%

Effect of rotation direction, traverse speed, and abrasive type during the hydroabrasive disintegration of a rotating Ti6Al4V workpiece

Hlaváček

Hloch

Nag

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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In this study, a new methodology is considered for determining the rotational senses (clockwise or anti-clockwise) of a workpiece during the hydroabrasive disintegration of rotating samples. The rotational directions are taken with respect to the position of the abrasive jet, that is, keeping it on the right side of the rotating workpiece when viewed from the free end in the cartesian coordinate system. Measurements were carried out for diameter deviation, material removal rate and surface roughness as a response to machining parameters such as traverse speed, workpiece rotation direction and abrasive grain. Final diameter of the workpiece (10.28–14.12 mm), material removal rate (1154–3936 mm3/min) and surface roughness (6.65–25.43 µm) values increase with increasing value of traverse speed (5–25 mm/min) using anti-clockwise rotation with Australian garnet abrasive grains. ANOVA analysis of the responses shows that traverse speed ( p = 0.000) is a statistically significant parameter for predicting all the machining responses. Abrasive type and rotational direction were statistically significant for determining diameter deviation ( p = 0.017, 0.006) and material removal rate ( p = 0.000, 0.000) but insignificant for surface roughness ( p = 0.373, 0.367). Scanning electron microscopy provided information on the surface morphology, depicting the characteristics of the disintegrated surface. Disintegrated features, like peak and valley formations, craters, holes, cutting traces and embedded abrasive particles on the surface were observed.

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Section: Final Diameter (D F )supporting

confidence: 77%

Effect of rotation direction, traverse speed, and abrasive type during the hydroabrasive disintegration of a rotating Ti6Al4V workpiece

Hlaváček

Hloch

Nag

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…Hence, screws are considered to be isotropic, homogeneous materials and biocompatible from a human perspective. The screws are made using either a conventional machining method or metal powder 3D printing technology where machining is the finishing process (see [34,35,[37][38][39]). However, the screw production technology is not dealt with in this article because the main objective is to verify the material models of the tangential elastic foundation.…”

Section: Methodsmentioning

confidence: 99%

“…These may lead to improving the production of screws (i.e., machining and 3D printing technologies, material properties, etc.) (for example, see [20,[34][35][36][37][38][39][40]).…”

Section: Introductionmentioning

confidence: 99%

Mechanics of Screw Joints Solved as Beams Placed in a Tangential Elastic Foundation

et al. 2021

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This article deals with a new original analytical solution of deformation, force and stress states in wood screw joints up to the limit values of pulling out/breaking the screw. The screws are under tension. The wood-to-screw interaction is effectively simplified by introducing several physical model variants using a tangential elastic non-linear foundation. The experimental verification of the proposed models using pull-out tests (i.e., pulling out screws from dry spruce wood in laboratory conditions) confirms the correctness of the proposed models of the elastic linear/non-linear foundation. The validity of the model is also analytically and experimentally verified in the biomechanical model of pulling out screws from the femur of a bovine/human cadaver, which confirms and expands the validity of newly designed screw joint models outside the timber structure area.

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“…Technological parameters [ 18 , 19 ] have been studied in order to achieve the required surface quality in the disintegration of static [ 20 ] and/or rotating workpieces and to apply WJ and AWJ technology to the field of precision machining [ 21 ], especially difficult-to-machine and thermolabile materials [ 22 , 23 , 24 ]. Experimental analyses of topography and AWJ technology-related causes of roughness and waviness of the machined surface have been investigated in previous studies [ 25 , 26 , 27 , 28 ] in order to predict the surface roughness quality, which is also necessary for newly developed materials, including metal matrix nanocomposites (MMNCs).…”

Section: Introductionmentioning

confidence: 99%

Surface Topography Analysis of Mg-Based Composites with Different Nanoparticle Contents Disintegrated Using Abrasive Water Jet

et al. 2021

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This study investigated the effect of abrasive water jet kinematic parameters, such as jet traverse speed and water pressure, on the surface of magnesium-based metal matrix nanocomposites (Mg-MMNCs) reinforced with 50 nm (average particle size) Al2O3 particles at concentrations of 0.66 and 1.11 wt.%. The extent of grooving caused by abrasive particles and irregularities in the abrasive waterjet machined surface with respect to traverse speed (20, 40, 250 and 500 mm/min), abrasive flow rate (200 and 300 g/min) and water pressure (100 and 400 MPa) was investigated using surface topography measurements. The results helped to identify the mode of material disintegration during the process. The nanoindentation results show that material softening was decreased in nanocomposites with higher reinforcement content due to the presence of a sufficient amount of nanoparticles (1.11 wt.%), which protected the surface from damage. The values of selected surface roughness profile parameters—average roughness (Ra), maximum height of peak (Rp) and maximum depth of valleys (Rv)—reveal a comparatively smooth surface finish in composites reinforced with 1.11 wt.% at a traverse speed of 500 mm/min. Moreover, abrasive waterjet machining at high water pressure (400 MPa) produced better surface quality due to sufficient material removal and effective cleaning of debris from the machining zone as compared to a low water pressure (100 MPa), low traverse speed (5 mm/min) and low abrasive mass flow rate (200 g/min).

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Evaluation of physical phenomena and surface integrity during hydroabrasive disintegration of the rotating workpiece with feedback loop control

Cited by 7 publications

References 20 publications

Effect of rotation direction, traverse speed, and abrasive type during the hydroabrasive disintegration of a rotating Ti6Al4V workpiece

Effect of rotation direction, traverse speed, and abrasive type during the hydroabrasive disintegration of a rotating Ti6Al4V workpiece

Mechanics of Screw Joints Solved as Beams Placed in a Tangential Elastic Foundation

Surface Topography Analysis of Mg-Based Composites with Different Nanoparticle Contents Disintegrated Using Abrasive Water Jet

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