Effect of vibratory peening on the sub-surface layer of aerospace materials Ti-6Al-4V and E-16NiCrMo13

Canals, Léo; Badreddine, Jawad; McGillivray, Brian; Miao, Hong; Lévesque, Martin

doi:10.1016/j.jmatprotec.2018.08.023

Cited by 23 publications

(13 citation statements)

References 16 publications

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“…Thus, the resulting stress concentration factor is only 1.04 using 20-node quadratic brick elements with reduced integration in Abaqus; see Figure 4b. As the CNC-driven milling process produces sharp edges, specimens were additionally polished by a vibratory finishing process [66][67][68][69]. Thereby, the specimens were ground and polished with different abrasive media to obtain the required surface quality.…”

Section: Methodsmentioning

confidence: 99%

A Probabilistic Fatigue Strength Assessment in AlSi-Cast Material by a Layer-Based Approach

Oberreiter

Fladischer

Stoschka

et al. 2022

Metals

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An advanced lightweight design in cast aluminium alloys features complexly shaped geometries with strongly varying local casting process conditions. This affects the local microstructure in terms of porosity grade and secondary dendrite arm spacing distribution. Moreover, complex service loads imply changing local load stress vectors within these components, evoking a wide range of highly stressed volumes within different microstructural properties per load sequence. To superimpose the effects of bulk and surface fatigue strength in relation to the operating load sequence for the aluminium alloy EN AC 46200, a layer-based fatigue assessment concept is applied in this paper considering a non-homogeneous distribution of defects within the investigated samples. The bulk fatigue property is now obtained by a probabilistic evaluation of computed tomography results per investigated layer. Moreover, the effect of clustering defects of computed tomography is studied according to recommendations from the literature, leading to a significant impact in sponge-like porosity layers. The highly stressed volume fatigue model is applied to computed tomography results. The validation procedure leads to a scattering of mean fatigue life from −2.6% to 12.9% for the investigated layers, inheriting strongly varying local casting process conditions.

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Section: Methodsmentioning

confidence: 99%

A Probabilistic Fatigue Strength Assessment in AlSi-Cast Material by a Layer-Based Approach

Oberreiter

Fladischer

Stoschka

et al. 2022

Metals

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“…A vibratory motion generated through an unbalanced motor causes the abrasive media to interact with the surface of the workpieces, providing a surface finishing action (Figure 16a). The process has been historically used as a deburring technique on turbine blades and fan blades to reduce the stress concertation along their edges whilst enhancing the parts fracture resistance and fatigue life [107,108].…”

Section: Vibratory Polishingmentioning

confidence: 99%

“…Coatings 2020, 10, 731 22 of 36 unbalanced motor causes the abrasive media to interact with the surface of the workpieces, providing a surface finishing action (Figure 16a). The process has been historically used as a deburring technique on turbine blades and fan blades to reduce the stress concertation along their edges whilst enhancing the parts fracture resistance and fatigue life [107], [108]. Vibratory polishing has gained interest amongst other industries and is widely used in marine and automotive to improve the surface finish of gears, hinges and fasteners [111].…”

Section: Vibratory Polishingmentioning

confidence: 99%

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Recent Progress in Precision Machining and Surface Finishing of Tungsten Carbide Hard Composite Coatings

Micallef

Zhuk²,

Aria

2020

Coatings

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Owing to their high hardness, fracture toughness and oxidation resistance, tungsten carbide (WC) coatings are extensively deposited on parts that operate in demanding applications, necessitating wear, erosion, and corrosion resistance. The application of thick and hard WC coatings has an inevitable effect on the original dimensions of the parts, affecting the geometrical tolerances and surface roughness. The capability of achieving a sub-micron surface finish and adhere to tight geometrical tolerances accurately and repeatably is an important requirement, particularly with components that operate in high-precision sliding motion. Meeting such requirements through conventional surface finishing methods, however, can be challenging due to the superior mechanical and tribological properties of WC coatings. A brief review into the synthesis techniques of cemented and binderless WC coatings is presented together with a comprehensive review into the available techniques which are used to surface finish WC-based coatings with reference to their fundamental mechanisms and capabilities to process parts with intricate and internal features. The binderless WC/W coating considered in this work is deposited through chemical vapour deposition (CVD) and unlike traditional cemented carbide coatings, it has a homogenous coating structure. This distinctive characteristic has the potential of eliminating key issues commonly encountered with machining and finishing of WC-based coatings. Here, six contact and non-contact surface finishing techniques, include diamond turning, precision grinding, superfinishing, vibratory polishing, electrical discharge machining, and electropolishing are discussed along with their current use in industry and limitations. Key challenges in the field are highlighted and potential directions for future investigation, particularly on binderless WC coatings, are proposed herein.

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“…Ciampini et al has demonstrated that Almen could be used for vibropolishing setup [3]. Some more studies are also emerging in terms of using Almen system for vibratory peening [4][5][6][7], but lacks visibility in terms of repeatability. Another challenge associated with vibratory peening is the comparison of residual stress compared to SP.…”

Section: Introductionmentioning

confidence: 99%

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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Effect of vibratory peening on the sub-surface layer of aerospace materials Ti-6Al-4V and E-16NiCrMo13

Cited by 23 publications

References 16 publications

A Probabilistic Fatigue Strength Assessment in AlSi-Cast Material by a Layer-Based Approach

A Probabilistic Fatigue Strength Assessment in AlSi-Cast Material by a Layer-Based Approach

Recent Progress in Precision Machining and Surface Finishing of Tungsten Carbide Hard Composite Coatings

Towards Optimization of Vibratory Manufacturing Process in Aerospace Industry

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