Inherent Damping Sustainability Study on Additively Manufactured Nickel-Based Alloys for Critical Part

Scott‐Emuakpor, Onome; George, Tommy; Beck, Jeff; Runyon, Brian; O’Hara, Ryan; Holycross, Casey; Sheridan, Luke

doi:10.2514/6.2019-0410

Cited by 10 publications

(7 citation statements)

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“…In their study, Onome E. et al examined beams incorporating unfused powder and compared their damping performance with conventional fully fused beams. [ 110 ] The findings revealed that the investigated beams could provide up to 10 times more damping than the baseline solid beam despite only a 1–4% modification of the internal beam volume. The primary mechanism for vibration suppression was identified through investigations into the impact of different parameter values on damping.…”

Section: Effect Of Am‐fabricated Geometries On Vibrational Characteri...mentioning

confidence: 99%

A Review on Vibration Characteristics of Additively Manufactured Metal Alloys

Azher,

Shah,

Bakhtari

et al. 2024

Adv Eng Mater

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The advent of additive manufacturing (AM) has dramatically shifted the manufacturing sector conceptualization, design, and creation of products. AM is poised to revolutionize goods production by establishing a new manufacturing paradigm, from reducing lead times to enabling rapid prototyping. AM can facilitate the production of complicated geometries and create functioning components with distinctive features for aerospace and automotive applications. However, defects such as pores, voids, interfaces, and inclusions can impair the quality and functionality of AM components. Vibration Analysis (VA) has become a popular tool for the dynamic qualification and testing of products and non‐destructive testing, but the literature lacks a comprehensive review of VA applied to AM. Hence, this paper summarizes recent advances in the application of VA for identifying and characterizing flaws in metal alloys, including titanium, aluminum, and nickel‐based alloys produced by AM. The review also includes studies on defects, such as porosity, cracks, and inclusions, and their effect on VA. The article concludes with a discussion of the limitations of VA for defect characterization and future research directions. Overall, VA is a promising non‐destructive testing method for quality assurance in AM and offers insights on overcoming the difficulties for further development and application of this technology.This article is protected by copyright. All rights reserved.

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Section: Effect Of Am‐fabricated Geometries On Vibrational Characteri...mentioning

confidence: 99%

A Review on Vibration Characteristics of Additively Manufactured Metal Alloys

Azher,

Shah,

Bakhtari

et al. 2024

Adv Eng Mater

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“…One possibility to increase the damping in laser beam melted structural components is to integrate the effect of particle damping [7][8][9][10][11][12][13][14][15][16][17][18][19][20]. By means of particle dampers, produced by laser powder bed fusion (LPBF), vibrations can be reduced by more than a factor of 20 in some cases [7,10,12].…”

Section: Reviewmentioning

confidence: 99%

“…Scott-Emuakpor et al analysed forced vibrations of particle-damped beams manufactured of Inconel 718 [12,13,19,20,34,35] and AISI 316L stainless steel [14,35]. The influence of the cavity position and number for a clamped beam are investigated.…”

Section: Applications and Research Activitiesmentioning

confidence: 99%

“…It was shown that the component damping could be increased by up to a factor of six, even with a low cavity volume of only 4% in relation to the beam volume [12,34]. These results were then used to build a model based on a regression analysis [19,20,35].…”

Section: Applications and Research Activitiesmentioning

confidence: 99%

“…In the field of additive manufacturing, especially in powder bed-based processes, the effect of particle damping represents a hitherto little-researched but very effective method for reducing vibrations [7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Particle dampers produced by laser powder bed fusion (LPBF) can reduce vibrations by more than a factor of 20 in a wide frequency range [7,10,12].…”

Section: Introductionmentioning

confidence: 99%

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Design of Particle Dampers for Laser Powder Bed Fusion

Ehlers

Lachmayer

2022

Applied Sciences

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Additively manufactured particle dampers can significantly improve component damping. However, if designed incorrectly, the damping can be worsened. For the design of additively manufactured particle dampers, there are not yet sufficient design rules and models to describe the effect due to numerous design parameters. The research question answered in this paper describes how the effect of particle damping can be characterised as a function of excitation force and excitation frequency for different cavity sizes. To characterise the effect of particle damping, a 33 full factorial test plan is constructed, and the damping is determined experimentally. It is shown that the damping can be reliably evaluated with the circle-fit method. The effect of particle damping is investigated for beams made of AlSi10Mg, 1.2709 and Ti6Al4V. As a result, a positive effect of the particle damping in a frequency range from 500 to 30,000 Hz and partly up to the 9th bending mode can be proven. It is shown that, for the first bending mode, there is an optimum at approx. 2000 Hz. For the optimum, the increase of the damping for the tool steel 1.2709 to 28 and for the aluminium alloy AlSi10Mg to 18 can be proven.

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