The effect of electro-discharge machined sonotrode topology on interlaminar bonding in ultrasonic consolidation

Edmonds, H. C.; Harris, Russell A.

doi:10.1117/12.880464

Cited by 2 publications

(3 citation statements)

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“…8. 3) which was imprinted by the sonotrode during UC [8][9][10]. 8(c) the spectrum for a point inside the keyhole.…”

Section: Sem and Energy Dispersive X-ray (Edx) Investigationmentioning

confidence: 99%

“…To explore the potential of UC for adaptive compos ite manufacturing, the integration of high volumes of fibers is required to assure active structure control and monitoring. The surface exhibits imprints of the sono trode introduced by oscillations and force which leaves a rough surface compared to an unprocessed foil [8][9][10]. Moreover, high oscillations are needed to induce sufficient plastic flow around the fibers to avoid void formation [5] which could conversely affect fiber security.…”

Section: Introductionmentioning

confidence: 99%

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Laser-Machined Microchannel Effect on Microstructure and Oxide Formation of an Ultrasonically Processed Aluminum Alloy

Masurtschak

Friel

Gillner

et al. 2015

Journal of Engineering Materials and Technology

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L aser-M ach in ed M icroC hannel Effect on M icrostructure and Oxide Form ation of an U ltra so n ic a lly Processed A lum in um A lloyUltrasonic consolidation (UC) has been proven to be a suitable method for fiber embed ment into metal matrices. To aid successful embedment of high fiber volumes and to ensure their accurate positioning, research on producing microchannels in combination with adjacent shoulders formed by distribution of the melt onto unique UC sample surfa ces with a fiber laser was carried out. This paper investigated the effect of the laser on the microstructure surrounding the channel within an Al 3003-H18 sample. The heat input and the extent of the heat-affected zone (HAZ) from one and multiple passes was examined. The paper explored the influence of air, as an assist gas, on the shoulders and possible oxide formation with regards to future bonding requirements during UC. The authors found that one laser pass resulted in a keyhole-shaped channel filled with a mix ture of aluminum and oxides and a symmetrical HAZ surrounding the channel. Multiple passes resulted in the desired channel shape and a wide HAZ which appeared to be an eutectic microstructure. The distribution of molten material showed oxide formation all along the channel outline and especially within the shoulder.

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“…8. 3) which was imprinted by the sonotrode during UC [8][9][10]. 8(c) the spectrum for a point inside the keyhole.…”

Section: Sem and Energy Dispersive X-ray (Edx) Investigationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laser-Machined Microchannel Effect on Microstructure and Oxide Formation of an Ultrasonically Processed Aluminum Alloy

Masurtschak

Friel

Gillner

et al. 2015

Journal of Engineering Materials and Technology

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“…10-50 lm), build platform temperature (ca. 25-200°C) and the surface topography of the sonotrode [5,6].…”

Section: Introductionmentioning

confidence: 99%

Solid-state additive manufacturing for metallized optical fiber integration

Monaghan

Capel

Christie

et al. 2015

Composites Part A: Applied Science and Manufacturing

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a b s t r a c tThe formation of smart, Metal Matrix Composite (MMC) structures through the use of solid-state Ultrasonic Additive Manufacturing (UAM) is currently hindered by the fragility of uncoated optical fibers under the required processing conditions. In this work, optical fibers equipped with metallic coatings were fully integrated into solid Aluminum matrices using processing parameter levels not previously possible. The mechanical performance of the resulting manufactured composite structure, as well as the functionality of the integrated fibers, was tested. Optical microscopy, Scanning Electron Microscopy (SEM) and Focused Ion Beam (FIB) analysis were used to characterize the interlaminar and fiber/matrix interfaces whilst mechanical peel testing was used to quantify bond strength. Via the integration of metallized optical fibers it was possible to increase the bond density by 20-22%, increase the composite mechanical strength by 12-29% and create a solid state bond between the metal matrix and fiber coating; whilst maintaining full fiber functionality.

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The effect of electro-discharge machined sonotrode topology on interlaminar bonding in ultrasonic consolidation

Cited by 2 publications

References 0 publications

Laser-Machined Microchannel Effect on Microstructure and Oxide Formation of an Ultrasonically Processed Aluminum Alloy

Laser-Machined Microchannel Effect on Microstructure and Oxide Formation of an Ultrasonically Processed Aluminum Alloy

Solid-state additive manufacturing for metallized optical fiber integration

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