Design and Construction of a Bolt-Clamped Langevin Transducer

Moreno, E.; Acevedo, Pedro; Fuentes, M.; Sotomayor, A.; Borroto, L.; Villafuerte, M.E.; Leija, L.

doi:10.1109/iceee.2005.1529652

Cited by 25 publications

(12 citation statements)

References 3 publications

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“…In this setup, functionality for conventional turning was preserved with the flexibility of switching between the conventional and ultrasonic cutting regimes during a single turning operation. [17] A standard Langevin-type piezoelectric transducer [23] was coupled with an aluminum concentrator and a titanium tool holder to form the ultrasonic cutting head. Titanium, offering a favorable strength-to-mass ratio, was preferred for the tool holder, since an additional mass attached to the concentrator shifts the resonating frequency and amplitude of the transducer.…”

Section: Methodsmentioning

confidence: 99%

Ti Alloy with Enhanced Machinability in UAT Turning

Maurotto

Siemers

Muhammad

et al. 2014

Metall Mater Trans A

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Metastable b-titanium alloys such as Ti 15V 3Al 3Cr 3Sn are of great technological interest thanks to their high fatigue strength-to-density ratio. However, their high hardness and poor machinability increase machining costs. Additionally, formation of undesirable long chips increases the machining time. To address those issues, a metastable b-titanium alloy (Ti 15V 3Al 3Cr 2Zr 0.9La) with enhanced machinability was developed to produce short chips even at low cutting speeds. A hybrid ultrasonically assisted machining technique, known to reduce cutting forces, was employed in this study. Cutting force components and surface quality of the finished work-pieces were analyzed for a range of cutting speeds in comparison with those for more traditional Ti 15V 3Al 3Cr 3Sn. The novel alloy demonstrated slightly improved machining characteristics at higher cutting speeds and is now ready for industrial applications.

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Section: Methodsmentioning

confidence: 99%

Ti Alloy with Enhanced Machinability in UAT Turning

Maurotto

Siemers

Muhammad

et al. 2014

Metall Mater Trans A

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“…These were omitted due to a lack of relevant data needed for implementation into the FEM model. Bolt generated mechanical bias is known to increase ultrasound pressure amplitude [28]. Calculated values that do not incorporate mechanical bias thus must be lower than the measured ones.…”

Section: Discussionmentioning

confidence: 93%

“…1). Ultrasound was generated using a prototype center bolt (Langevin type) piezoelectric ultrasound transducer [27] and [28] with an operating frequency of 29.6 kHz (Iskra Medical, Slovenia). The transducer was submerged in a water bath at a depth of 12 cm.…”

Section: Experimental Systemmentioning

confidence: 99%

Low-Frequency Sonoporation in vitro: Experimental System Evaluation

Jelenc¹,

Miklavčič²,

Lebar³

2012

SV-JME

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Sonoporation is a phenomenon where ultrasound increases cell membrane permeability. As the result, molecules that are otherwise deprived of transport mechanisms can be transported across the cell membrane. Several different experimental exposure systems are described in the literature. Low-frequency ultrasound (<500 kHz) exposure systems can be divided into two groups: systems with the transducer directly immersed in the cell suspension and systems with the transducer in a water bath. We developed an experimental system based on progressive ultrasound wave in a water bath. It consists of a transducer operating at 29.6 kHz submerged in a water bath, and bath walls lined by ultrasound absorbing lining. Using a hydrophone, we evaluated ultrasound reflections inside the bath, both with and without acoustic lining on the bath's boundaries. We also built a finite element model of the system in order to calculate ultrasound parameters that are inaccessible by conventional hydrophone measurement due to equipment limitations. The experimental system will enable exposure of cells to pre-measured and pre-calculated ultrasound conditions.

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“…1): carbide insert 1, turning tool 2, tool holder 3, two fixation bolts 4. Langevin type piezoelectric transducer [9] which contains of horn 5, piezoelectric rings 6 and backing 7. Properties of the parts are listed in the Table. The model was transferred to the CAD system Solidworks, after the dimensions were taken.…”

Section: Model Of Turning Toolmentioning

confidence: 99%