A nonrational B-spline profiled horn with high displacement amplification for ultrasonic welding

Nguyen, Hong-Quang; Nguyen, Hai-Dang; Uan, Jun-Yen; Wang, Dung-An

doi:10.1016/j.ultras.2014.07.003

Cited by 29 publications

(10 citation statements)

References 9 publications

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“…Besides, in order to amplify the longitudinal displacement in the x-direction, the front mass was particularly designed as a stepped horn, since the gain was found to be proportional to the square of the input and output end diameter ratio of the horn [86]. The stepped horn was known to give the largest displacement amplification (high gain) among the horns, such as exponentially, conically, cantenoidal tapered or parametric curved horns [87]. Furthermore, the aluminium horn had a flange so that the transducer could be fixed.…”

Section: Prototype Device -Modelling and Fabricationmentioning

confidence: 99%

Lead-free potassium sodium niobate piezoceramics for high-power ultrasonic cutting application: Modelling and prototyping

Akça

Yılmaz

2019

PAC

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The motivation of this study was design, fabrication and characterization of bolt-clamped Langevin type transducers (BLT) from lead-free K 0.5 Na 0.5 NbO 3 (KNN) based piezoceramics for high-power ultrasonic cutting applications. Hard and lead-free KNN piezoceramics was obtained by adding K 4 CuNb 8 O 23 (KCN) together with ZnO and SnO 2 . Densification and high-power characteristics of KNN-KCN piezoceramics were enhanced in the presence of ZnO and SnO 2 . BLTs made from hard PZT4 (commercial Pb(Zr,Ti)O 3 ) or Zn,Sn co-doped KNN-KCN piezoceramic rings (KNN-KCN-ZnSn) were modelled through ATILA finite element analysis software package. Simulated and experimentally measured impedance spectra, resonance modes and harmonic analysis results of BLTs were compared with each other. Longitudinal vibration displacement at the tip of the horns of BLTs at approximately 30 kHz was measured via photonic sensor device to compare their performances. At the end, based on the simulation and experimental results, a prototype ultrasonic cutting device was fabricated from lead-free KNN-KCN-ZnSn piezoceramic rings. Its cutting action on both plastic and ceramic materials was demonstrated for the first time. In summary, it was found that a hard KNN-KCN based lead-free piezoceramics were good potential replacements for their lead-based counterparts for commercial high-power BLT applications.

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Section: Prototype Device -Modelling and Fabricationmentioning

confidence: 99%

Lead-free potassium sodium niobate piezoceramics for high-power ultrasonic cutting application: Modelling and prototyping

Akça

Yılmaz

2019

PAC

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“…Theorem 3.1 Let function f (x) be such that f ∈ C 5 ([a, b]). For approximation f (x), x ∈ [x j , x j+1 ] by (12), (13) we have the error estimations:…”

Section: Non-polynomial Integro-differential Spline Constructingmentioning

confidence: 99%

“…Nowerdays many splines are known, including cubic, bicubic and biquadratic B-splines, trigonometric, orthogonal splines. Those splines are applied to the construction of curves and surfaces, for the designing of ship hulls, for the transformation of a sound signal's frequency [1,2,[6][7][8][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

On approximations by polynomial and nonpolynomial integro-differential splines

Бурова¹,

Doronina²

2016

ams

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The present article is one of a number of articles in which the authors study the properties of integro-differential splines. The paper deals with the construction of integro-differential polynomial and nonpolynomial splines of the fifth order. The order of approximation with integrodifferential polynomial and nonpolynomial splines of the fifth order are given. We use the tensor product of polynomial and non-polynomial splines constructed in this paper for the approximation of functions of two variables. The results of these numerical experiments are given.

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“…This energy can be used for plastic welding in automotive, electronic appliance, and medical equipment industries [1]. It also is being utilized in acoustic compressors, refrigerators, and other industrial processes [2].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Acoustic Propagation inside Multiple Liquids

Foroughi¹,

Karamzadeh²,

Habibi³

et al. 2018

Proceedings of the 5th International Conference of Fluid Flow, Heat and Mass Transfer (FFHMT'18)

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-This paper describes numerical analysis of acoustic propagation inside multiple Newtonian liquids. The applied acoustic pressure is generated by high intensity focused ultrasound transducer. Analysis is performed by implementation of linear wave equation as well as heat transfer equations for fluids. Simulation is done in COMSOL Multiphysics as a finite element software. Investigation is focused on study of sound effects, temperature and pressure gradient, in focal region inside three distinct liquids with various properties. Results clearly illustrate the dependency of heat transfer and pressure distribution in focal area on physical properties of medium it passes through as well as wave frequency.

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A nonrational B-spline profiled horn with high displacement amplification for ultrasonic welding

Cited by 29 publications

References 9 publications

Lead-free potassium sodium niobate piezoceramics for high-power ultrasonic cutting application: Modelling and prototyping

Lead-free potassium sodium niobate piezoceramics for high-power ultrasonic cutting application: Modelling and prototyping

On approximations by polynomial and nonpolynomial integro-differential splines

Numerical Analysis of Acoustic Propagation inside Multiple Liquids

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