Data Driven Optimization of Vibropeening

Gopinath, Abhay; Chan, Wai Luen; Kumar, Amit

doi:10.1016/j.procir.2020.02.036

Cited by 5 publications

(7 citation statements)

References 8 publications

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“…Ultimately such a combined effect will influence the process results. As can be seen, the n E , n F and n V of Case 3 and Case 4 is much greater than those of Case 1 and Case 2, such as the n E of Case 3 is about ten times that of Case 1, indicating that the workpiece fixed on the fixture inside the container is more conducive to plastic deformation effects and induction of residual compressive stress than fixed on the external fixture [13]. However, the n E , n F and n V of Case 1 and Case 2 are almost equal, as are Case 3 and Case 4, proving that the assistance of vertical vibration has little effect on normal contact regardless of whether fixed inside or outside.…”

Section: Process Comparison Resultsmentioning

confidence: 94%

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Numerical investigation of a novel bidirectional composite vibratory finishing

Yang¹,

Wang³

et al. 2022

Preprint

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Given the poor accessibility of the current finishing process for parts with complicated geometries, a novel bidirectional composite vibratory finishing (BCVF) approach is presented, which combines the power actions on abrasive particles and processed workpieces. The discrete element method (DEM) was used to obtain a fundamental understanding of the BCVF process. By comparing different processes, it has been demonstrated that the BCVF promotes the mobility of abrasive particles to improve the finishing results and efficiency further. The characteristics of normal and tangential contact on the surface of the workpiece involved in the BCVF process were analyzed. Meanwhile, the effects of container size (or wall effects), media amount, workpiece position, and vibration parameters (including vibration amplitude and frequency) on the media-component interactions were systematically studied. The results show that the distance between the workpiece and the container wall in the y-direction can be reduced to 4d (d is the abrasive particle diameter) without affecting the finishing effect. In addition, with the enhancing vibration in the x-direction, particle impact and shear effects are subsequently strengthened. In contrast, the media amount above the workpiece and the z-directional vibration is mainly effective for the shear effect. Overall, the process can enhance the impact and shear effects simultaneously through composite vibration.

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Section: Process Comparison Resultsmentioning

confidence: 94%

“…Due to the "wall effect" [12], the relative movement between the treated parts and media is increased. It leads to higher impact forces and velocities, which could introduce residual stress on the surface of the workpiece [13].…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of a novel bidirectional composite vibratory finishing

Yang¹,

Wang³

et al. 2022

Preprint

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“…A vibratory peening machine from Walther Trowal namely TFM 58/32 is used for study [8]. At each RPM and amplitude, experimental trials were completed and Almen deflections were documented.…”

Section: Methodsmentioning

confidence: 99%

“…Another challenge associated with vibratory peening is the comparison of residual stress compared to SP. Recent studies using Walther Trowal machine for blisk drums has shown that compared to shot peening the residual stress imparted is low due to the low energy nature of the vibratory peening process [8]. Hence in this paper an effort is made to address the above two gaps by demonstrating repeatability of Vibropeening process in a production environment and a fundamental approach to improve the energy of vibratory peening process.…”

Section: Introductionmentioning

confidence: 98%

Towards Optimization of Vibratory Manufacturing Process in Aerospace Industry

Gopinath¹,

Kumar²,

Nagalingam³

2022

Asian Society for Precision Engineering and Nanotechnology (ASPEN 2022)

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“…Since it is thereby possible to improve the fatigue performance of a component [13], shot peeing is used, for example, in the manufacturing process of high-performance turbines, enabling the safe use of highly stressed parts and increasing the service life of components [14]. As failure-facilitating surface cracks may also be introduced by shot peening, an additional smoothing process is required [15]. After shot peening, compressive residual stresses result, and the surface is statistically evenly dented with the impact points of the shot peening material.…”

Section: Introductionmentioning

confidence: 99%

Pulsed Mechanical Surface Treatment—An Approach to Combine the Advantages of Shot Peening, Deep Rolling, and Machine Hammer Peening

Meyer

Hettig

Mensching

2021

JMMP

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Several manufacturing processes are used to beneficially influence the surface and subsurface properties of manufactured parts. Different aspects such as the surface topography or resulting residual stresses are addressed using different manufacturing processes. This paper presents the first approach for pulsed mechanical surface treatment (PMST), a new manufacturing process aiming to combine the mechanics used in deep rolling and shot or hammer peening. The process can generate a defined surface topography while constantly impinging a mechanical impact on the workpiece. Two different tools (type 1 and type 2) have been designed to approach this new concept. Hardened carbide pins are used for type 1 to prove the concept using a simpler kinematic and resulting in a burnishing-like process. For type 2, hardened roller is used and results in an actual rolling process. Specimens made of S235 are processed in experiments with tool type 1 with varying pulse frequency and feeds. The resulting surface topography is described using optical measurement systems while micro-hardness measurements are used to describe the subsurface properties. The results in general show an increase of hardness in the surface and subsurface layer while the resulting surface topography can be directly controlled by the process parameters and therefore be designed for specific functional properties.

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Data Driven Optimization of Vibropeening

Cited by 5 publications

References 8 publications

Numerical investigation of a novel bidirectional composite vibratory finishing

Numerical investigation of a novel bidirectional composite vibratory finishing

Towards Optimization of Vibratory Manufacturing Process in Aerospace Industry

Pulsed Mechanical Surface Treatment—An Approach to Combine the Advantages of Shot Peening, Deep Rolling, and Machine Hammer Peening

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