Lissajous-like figures with triangular and square waves

Flemming, J.; Hornes, A.

doi:10.1590/s1806-11172013000300031

Cited by 6 publications

(7 citation statements)

References 10 publications

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“…When the waves are at a phase angle of exactly π /2, the output shape is a distorted ellipse. Various distorted ellipses can be observed between these two extremes [ 15 ].…”

Section: Sample Preparation and Experimental Setupmentioning

confidence: 99%

A novel XYZ electrospinning that orients the trajectory and collimates the electrified fluid jet of polymer nanofibers by induced electric fields

García-Limón,

Aguilar-Mejía,

Reyes-Cruz

et al. 2024

PLoS ONE

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Electrospinning is a process in which high voltage creates nanostructured fibers with random orientation from a polymer solution. A novel electrospinning instrument was designed and constructed, capable of orienting and collimating the trajectory of the electrified fluid jet. The equipment collimates and adjusts the electrified fluid jet in the X-Y directions using deflector plates connected to a variable electric field. Simultaneously, different membrane thicknesses can be selected, i.e., in the Z direction. Additionally, by programming the sinusoidal function generator to perform an X-Y sweep, Lissajous figures (LF) were obtained. SEM images obtained through XYZ electrospinning of PVC and PVDF membranes were used to determine the control achieved over the orientation distribution of the processed nanofibers and the modification of their diameter, with and without applying the electric field to the deflector plates. The nanofibers obtained from the polymeric membranes, which originated after the straight segment of the Taylor cone, did not exhibit a random trajectory and position. Instead, the collimated electrified fluid jet deposited them in a cross pattern (X-Y) on the collector-cathode plate.

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“…When the waves are at a phase angle of exactly π /2, the output shape is a distorted ellipse. Various distorted ellipses can be observed between these two extremes [ 15 ].…”

Section: Sample Preparation and Experimental Setupmentioning

confidence: 99%

A novel XYZ electrospinning that orients the trajectory and collimates the electrified fluid jet of polymer nanofibers by induced electric fields

García-Limón,

Aguilar-Mejía,

Reyes-Cruz

et al. 2024

PLoS ONE

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show abstract

“…An important issue is the development of tools, machine tools, and honing methods which, for example, would allow the creation of oil paths in the shape of curves of various kinds [156][157][158]. It is also very important to control the value of temperature created in final step of the honing process.…”

Section: Effect Of Honing Parameters On Shape Deviations In the Honed...mentioning

confidence: 99%

Influence of Honing Parameters on the Quality of the Machined Parts and Innovations in Honing Processes

Sender

Buj-Corral

2023

Metals

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The article presents a literature review dealing with the effect of the honing parameters on the quality of the machined parts, as well as with the recent innovations in honing processes. First, an overview about the honing and the plateau-honing processes is presented, considering the main parameters that can be varied during machining. Then, the influence of the honing parameters on surface finish, shape deviation and material removal rate is presented. Finally, some special and innovative applications of the honing process are described. For example, honing with variable kinematics allows obtaining oil grooves that are not rectilinear but curvilinear, in order to reduce the temperature of the part during machining and thus obtaining better surface finish and lower shape deviation. Automation of the honing machines is useful to improve both the production and the verification process. Another innovation consists of using 3D printed tools in honing processes, which will help to obtain abrasive tools with complex shapes, for example by means of powder bed fusion processes.

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“…Os primeiros estudos destas curvas foram desenvolvidos por Bowditch e Lissajous durante o Século XIX [7]. Atualmente elas são utilizadas em diversas aplicações, tanto de cunho didático quanto tecnológico, como por exemplo para obter a frequência de um sinal desconhecido, ou determinar a diferença de fase entre dois sinais [8].…”

Section: Figuras De Lissajousunclassified

Medindo a velocidade do som utilizando figuras de Lissajous

Baraúna

Furtado

Perez

2015

Rev. Bras. Ensino Fís.

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Existem várias técnicas para obter a velocidade do som no ar à temperatura ambiente, desde as mais simples, que envolvem a razão entre distâncias percorridas e tempos até as mais sofisticadas, associadas a fenômenos oscilatórios. Neste trabalho propomos um aparato experimental de considerável baixo custo para medir esta velocidade que envolve figuras de Lissajous e tubos ressonantes. Os fenômenos físicos envolvidos no processo possibilitam ao estudante observar e se aprofundar no entendimento de vários conceitos de física ondulatória, bem como discutir o conceito de superposição de movimentos e pode ser desenvolvido por estudantes do ciclo avançado de cursos de Física e Engenharias.

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Lissajous-like figures with triangular and square waves

Cited by 6 publications

References 10 publications

A novel XYZ electrospinning that orients the trajectory and collimates the electrified fluid jet of polymer nanofibers by induced electric fields

A novel XYZ electrospinning that orients the trajectory and collimates the electrified fluid jet of polymer nanofibers by induced electric fields

Influence of Honing Parameters on the Quality of the Machined Parts and Innovations in Honing Processes

Medindo a velocidade do som utilizando figuras de Lissajous

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