Acoustic measurement of the arc voltage applicable to arc welding and arc furnaces

Drouet, M.; Nadeau, F.

doi:10.1088/0022-3735/15/3/002

Cited by 37 publications

(25 citation statements)

References 2 publications

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“…Moreover, the non-conventional parameters, at the present, are not used enough to evaluate the welding quality. They are some non-contact methods for welding monitoring process as acoustical sensing [8][9][10][11][12][13][14][15], spectroscopy emission [16][17][18], infrared emission [19][20][21] and sensoring combination [22].…”

Section: (3)mentioning

confidence: 99%

Sensors for quality control in welding

Alfaro

2012

Soldag. insp.

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The classical inspection methods used for detecting and finding disturbances in welding process are based on direct measurement of its parameters as arc voltage, welding current, wire feed speed, etc. Using these inspection methods implies sensors insertion around the welding process and its presence could alter the metallic transference behavior and consequently an uneven quality as well as it can increase the production cost. For reducing these implications is necessary using a non intrusive inspection method. In this paper we will show nonintrusive methods to the weld quality inspection. These methods are based on sensor fusion, the extraction of global information coming from the interrelation data given by each sensor that, for example, sensing the spectroscopy radiation emission, the acoustic sensing of the electrical arc, the infrared emissions indicating the heat content of the weld. Finally, the fusion data will be applied to a statistical control for detecting and finding welding disturbances. The results will show that sensor fusion could be used as a tool to measure indirectly the weld quality in the GMAW process. Key-words: Quality Control in Welding, Spectroscopy, Acoustic sensing, Infrared emission, Sensor fusion. Resumo: Os métodos clássicos de inspeção utilizados para detectar e encontrar perturbações nos processos de soldagem são baseados comumente na medição direta de seus parâmetros como da tensão do arco, corrente de soldagem, velocidade de alimentação, etc. Usando esses métodos de inspeção implica inserção dos sensores em todo o processo de soldagem e sua presença poderia alterar o comportamento, por exemplo, da transferência metálica e, consequentemente, uma qualidade irregular da junta soldada, bem como provocaria o aumento do custo de produção. Para reduzir essas implicações é necessário usar um método de inspeção não intrusiva.

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Section: (3)mentioning

confidence: 99%

Sensors for quality control in welding

Alfaro

2012

Soldag. insp.

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“…Un impulso de menor amplitud se produce cuando una extinción de arco así como un impulso de gran amplitud se produce cuando una ignición de arco ocurre (ver Figura 5c). Cabe resaltar que es posible notar el retardo entre las señales acústicas y electicas que se deben a su velocidad de propagación en el aire, pero que mientras éstas no superen los 400 ms, no se verán comprometidas con la adecuada representación de la dinámica del arco eléctrico [11,12]. Investigaciones en monitoreo acústico mostraron que existe una relación entre el sonido producido y la potencia del arco que es expresada mediante la ecuación 1.…”

Section: Emisiones Acústicas Y Electromagnéticasunclassified

Aplicabilidad del monitoreo de emisiones del arco eléctrico para el control de calidad en el proceso MAG-S

Cayo

Alfaro

2011

Soldag. insp.

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“…It is known that the specialized welders use an acoustic and visual combination for the monitoring and control of the welding process (Kralj et al, 1968). In the end 70 years' measurement of electrical arc voltage was successfully carried out by acoustical methods (Drouet, 1979(Drouet, , 1982. The welding arc sound represents the behavior of the electrical parameters of the welding arc, consequently this fact make possible monitoring the stability of the welding process through the sound.…”

Section: Acoustic Sensingmentioning

confidence: 99%

“…This c h a n g e p r o d u c e s p r e s s u r e v a r i a t i o n s t h a t a r e a i r b o r n e transported and sensing by the microphone. The sound pressure from electric arc is a consequence of amplitude modulation of arc voltage and welding current (Drouet, 1979(Drouet, , 1982. This relation is expressed by the equation (17).…”

Section: Welding Electrical Arc and Acoustical Signalsmentioning

confidence: 99%

Sensors for Quality Control in Welding

Alfaro¹

2011

Arc Welding

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Acoustic measurement of the arc voltage applicable to arc welding and arc furnaces

Cited by 37 publications

References 2 publications

Sensors for quality control in welding

Sensors for quality control in welding

Aplicabilidad del monitoreo de emisiones del arco eléctrico para el control de calidad en el proceso MAG-S

Sensors for Quality Control in Welding

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