Dynamic Behaviour of β-Ti-15333 in Ultrasonically Assisted Turning: Experimental and Numerical Analysis

Muhammad, Riaz; Ahmed, Naseer; Ullah, Himayat; Silberschmidt, Vadim V.

doi:10.24200/sci.2017.4312

Cited by 5 publications

(8 citation statements)

References 22 publications

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“…In the earlier work of Muhammad et al [19,25], they demonstrated that application of vibration on the cutting insert resulted a decline of 75, 67, and 52% in F x , F y , and F z , respectively. However, in the current work, it was concluded that addition of heat with vibration resulted an additional drop of 15, 11, and 16% in F x , F y , and F z , respectively.…”

Section: Materials Modelmentioning

confidence: 95%

“…The most striking effect reported was the pronounced decline in the levels of observed forces with forced vibrated tool [24,25]. The consequent reduction of chatter and spring-back observed improved dimensional accuracy of the finished components.…”

Section: Introductionmentioning

confidence: 98%

“…Improving the machining properties of the alloy without degradation of its desirable mechanical properties is challenging as minute changes in the chemical composition have large effects [6][7][8]. Several efforts have been exercised to shrink the propensity of the alloy for Table 2 Feed-speed-depth of cuts used in experimental tests and simulations [25] continuous chips by doping of different alloying elements which should decrease adhesion between chip segments, resulting in discontinuous chips. Improving the cutting process offers the guarantee that fatigue and mechanical properties of the alloy are generally preserved.…”

Section: Introductionmentioning

confidence: 99%

“…Recorded forces at 300°C (V = 10 m/min; a p = 0.3 mm)[25] Process zone temperature history at 0.3 mm depth of cut, 10 m/min cutting speed; a HCT and b HT…”

mentioning

confidence: 99%

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Hybrid machining process: experimental and numerical analysis of hot ultrasonically assisted turning

Muhammad

Ahmed

Ullah

et al. 2018

Int J Adv Manuf Technol

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A hybrid turning is presented for turning of Ti-15V-3 Al-3 Cr-3 Sn alloy. In this technique, cutting insert is vibrated in velocity direction with the help of ultrasonic transducer and external heat is provided to the machined workpiece to gain collective benefits of both arrangements in cutting of hard-to-cut alloys. The studied alloy was investigated numerically and experimentally using hybrid turning process to determine its rewards in decline of measured cutting forces and enhancement in quality of machined surface. The assessment for thermal evolution in the cutting process was carried out both numerically and experimentally, and an accurate prediction of process zone temperatures is achieved. A significant improvement in dry turning of the studied alloy was achieved in terms of substantial decline in cutting forces and no substantial alterations in the metallurgy of the tested material. An elastoplastic thermo-mechanically coupled finite-element model for oblique-turning process is established to investigate the effect of heat and vibration on output parameters numerically. The developed model was used to explore the influence of selected machining parameters (depth-of-cut, feed rate, cutting speed, and tool nose radius) on three components of forces, stresses, and process zone temperature. Comparative case studies were executed with the developed models of conventional-turning, hot-conventional-turning, and hybrid turning and were confirmed by the outputs from tests carried out on the in house prototype available at Loughborough University, United Kingdom. The model was used for two-dimensional ultrasonic vibration in all three axis and resulted no significant drop in the cutting forces when compared to the studied hybrid turning process.

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Section: Materials Modelmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

“…Recorded forces at 300°C (V = 10 m/min; a p = 0.3 mm)[25] Process zone temperature history at 0.3 mm depth of cut, 10 m/min cutting speed; a HCT and b HT…”

mentioning

confidence: 99%

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Hybrid machining process: experimental and numerical analysis of hot ultrasonically assisted turning

Muhammad

Ahmed

Ullah

et al. 2018

Int J Adv Manuf Technol

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“…The ultrasonic system developed at Loughborough University, UK is an open-loop system and is optimized for the above ultrasonic parameters. The maximum force reduction and improvement in surface nish are reported for Ti-and Ni-based alloys [17,18,22,32]. A four-jaw chuck was used to clamp the workpiece on the lathe machine.…”

Section: Machiningmentioning

confidence: 99%

Influence of Tool Material on Forces, Temperature and Surface Quality of Ti-15333 Alloy in CT and UAT

et al. 2018

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Ultrasonically Assisted Turning (UAT) is a progressive machining method in which vibration is applied to the cutting insert in the direction of the cutting tool velocity to reduce the cutting forces signi cantly and increase the surface nish noticeably. However, the key question about the tool damage caused by the vibration and its e ect on the cutting forces, surface roughness, and process zone temperature is still unknown in UAT. This paper conducts an experimental analysis of the e ect of a worn tool in UAT and Conventional-Turning (CT) of -Ti-15V-3Al-3Cr-3Sn (Ti-15333) alloy on the surface quality of a machined surface, temperature of the process zone, and cutting forces using KC5510 (PVD TiAlN) and CP500 (PVD (Ti,Al)N-TiN) cutting inserts. In UAT, the tool edge damages in CP500 inserts increased with tested machining time, which resulted in the growth of 8 N and 10 N in tangential force component in CT and UAT, respectively. Similarly, with the progression of tool edge damage, growth rates of 1.7% and 9.3% in the process zone temperature were observed in CT and UAT, respectively. The surface roughness results revealed a gradual degradation with machining time; however, the results of UAT with a worn tool were signi cantly better than those of CT with a virgin tool.

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Dynamic finite element analysis of shot peening process of 2618-T61 aluminium alloy

Ullah¹,

Ullah²,

Rauf³

et al. 2018

Scientia Iranica

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Shot peening is a surface treatment processes usually used for the improvement of fatigue strength of metallic parts by inducing residual stress eld in them. The experimental evaluation of shot peening parameters is not only very complex but also costly. An attractive alternative is the explicit dynamics Finite Element (FE) analysis having the capability of accurately envisaging the shot peening process parameters using a suitable constitutive model and numerical technique for the material. In this study, ANSYS/LS-DYNA software was used to simulate the impact of steel shots of various sizes on 2618-T61 aluminium alloy plate described with strain rate dependent elasto-plastic material model. The impacts were determined at various incident velocities. The e ects of shot velocity and size on the induced compressive residual stress and plastic deformation were investigated. The results demonstrated that increasing the shot velocity and size would lead to increase in plastic deformation of the target. The obtained results were close to the published ones, and the numerical models were capable to capture the patterns of residual stress and plastic deformation experimentally observed in aluminium alloys. The study is quite helpful in determining and selecting optimal shot peening parameters for the surface treatment of aluminium alloy parts.

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Dynamic Behaviour of β-Ti-15333 in Ultrasonically Assisted Turning: Experimental and Numerical Analysis

Cited by 5 publications

References 22 publications

Hybrid machining process: experimental and numerical analysis of hot ultrasonically assisted turning

Hybrid machining process: experimental and numerical analysis of hot ultrasonically assisted turning

Influence of Tool Material on Forces, Temperature and Surface Quality of Ti-15333 Alloy in CT and UAT

Dynamic finite element analysis of shot peening process of 2618-T61 aluminium alloy

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