Effect of different standoff distance and driving current on transducer during ultrasonic cavitation peening

Bai, Fushi; Saalbach, Kai-Alexander; Twiefel, Jens; Wallaschek, Jörg

doi:10.1016/j.sna.2017.05.002

Cited by 20 publications

(5 citation statements)

References 10 publications

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“…16 The cavitation erosion is influenced by multiple factors such as the standoff distance between the ultrasonic horn and the target specimen, chemical ingredients of the liquid and the frequency of ultrasound. 17,18 In recent years, the effects of material properties on the cavitation erosion have been of particular interest in practical applications that involve cavitation. 19 Different materials can manifest significantly different cavitation erosion characteristics.…”

Section: Introductionmentioning

confidence: 99%

Comparative investigation of ultrasonic cavitation erosion for three materials in deionized water

Opare

Kang

Xiao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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To investigate the response of material to cavitation erosion, a comparative work was carried out on three materials, aluminum, copper alloy and titanium. Ultrasonic cavitation erosion was produced as the specimen was submerged in the deionized water. Within a cavitation erosion period of 120 min, the cumulative mass loss was measured at certain time intervals. Surface structure and cavitation damage patterns were observed for the three materials. Microhardness was measured and compared. The results indicate that the cumulative mass loss of aluminum is the highest among the three materials, while the slightest material removal is associated with titanium, which is still in the initial stage of cavitation erosion after 120 min of cavitation erosion. The surface of the aluminum specimen is eroded rapidly after the cavitation erosion commences. Large erosion pits dominate the eroded surface as the cavitation erosion progresses. The surface of the titanium specimen manifests needle-like erosion pits and cleavage cracks. Even at the later stage of the cavitation erosion, non-eroded surface elements are identifiable. The cavitation erosion pattern on the copper alloy specimen surface is related to the twin-phase crystal structure and large erosion pits are produced at the later stage of cavitation erosion. The highest resistance to the cavitation erosion of titanium is related to the close-packed hexagonal structure and the weak slip effect associated.

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Section: Introductionmentioning

confidence: 99%

Comparative investigation of ultrasonic cavitation erosion for three materials in deionized water

Opare

Kang

Xiao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

show abstract

“…When the ultrasonic cavitation peening is completed, the remaining material in water, such as metal and metal oxide particles, can easily be collected and recycled [17]. In addition to this advantage, this surface treatment process is inexpensive [18].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Peening Cylindrical Workpieces Utilizing a Transducer with Ring Sonotrode

et al. 2020

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In industrial applications, the shafting components with high stress are easily damaged due to cyclic loads if there is no surface treatment. With the use of ultrasonic cavitation peening, the residual compressive stress and the surface hardness of these components can be improved. While traditional longitudinal vibration transducers are used to treat cylindrical workpieces, the treated areas are limited, and the treatment period is relatively long. To solve these problems, we designed a novel configuration of the piezoelectric transducer as a type of the combination of rod and ring. During ultrasonic cavitation peening, we placed the cylindrical workpieces in the ring tool to improve the limitation. However, the treated surface properties were largely influenced by the input parameters (driving voltage and rod diameters). In this investigation, the cylindrical workpieces, which were covered with aluminum foils, were first treated by ultrasonic cavitation peening to detect the intensity and distribution of the cavitation bubbles on the treated surface. Then, the sonochemiluminescence method was utilized as an additional way to find the optimal operation parameters (190 V and 16 mm). Finally, the ultrasonic cavitation process was conducted with the optimal parameters. The treatment results showed that the surface hardness increased by about 36% without significant increase of the surface roughness.

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“…However, there are a small number of studies related to the gap distance effect on the cavitation erosion in the available literature. 13,14 In the present study, flat aluminum samples were cavitated by using an indirect method and the reason for this is to determine the minimum gap distance that gives the highest delamination area in a particular zone. This will reduce the total test time and also energy-consumption costs for the industrial processes.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the cavitation erosion of a flat aluminum part using a sonotrode test device

Dursun¹,

Sevilgen²,

Karamangil³

2019

Mater. Tehnol.

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In this paper we aimed to determine the gap distance between a horn and an aluminum part that ensures the highest cavitation erosion rate in a homogeneous delaminated area and provides the minimum energy consumption. For this purpose, a sonotrode device, which is capable of generating cavitation bubbles in the laboratory and enabling the evaluation of the cavitation resistance of parts with different parameters, was used in experiments. An optical microscope was used to visualize the surface delamination area where the cavitation erosion occurs, and a high-precision scale was used for measuring the total mass loss due to the cavitation erosion for each test. A high-speed camera was used to visualize the shape and behavior of the flow characteristics below the sonotrode. From the experimental results it is clear that the delamination area decreased with the increasing gap distance due to the impact region of bubble structures on the part surface. The gap distance clearly had a great effect on the cavitation erosion rate that must be determined while considering the energy consumption, test time and maximum homogeneous delaminated area in a specific cavitation test. The optimum distance was obtained as 3.5 mm, by considering the maximum cavitation erosion rate and using minimum power.

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Effect of different standoff distance and driving current on transducer during ultrasonic cavitation peening

Cited by 20 publications

References 10 publications

Comparative investigation of ultrasonic cavitation erosion for three materials in deionized water

Comparative investigation of ultrasonic cavitation erosion for three materials in deionized water

Experimental Investigation of Peening Cylindrical Workpieces Utilizing a Transducer with Ring Sonotrode

Experimental investigation of the cavitation erosion of a flat aluminum part using a sonotrode test device

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