Effect of jet velocity in co-flow water cavitation jet peening

Marcon, Andrea; Melkote, Shreyes N.; Castle, James; Sanders, Daniel G.; Yoda, Minami

doi:10.1016/j.wear.2016.03.027

Cited by 34 publications

(7 citation statements)

References 30 publications

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“…According to the preliminary experiment results, as shown in Figure 3, an impact zone with good forming effects under different incident pressures appeared between two concentric circles whose radii were R 1 and R 2 , and whose center was aligned with the jet axis. Considering the region between the two concentric circles with radii R 1 = 12.3 mm (i.e., the maximum value of R 1 ) and R 2 = 19.3 mm (i.e., the minimum value of R 2 ) was always a stable impact zone in the range of incident pressure investigated (i.e., 8,12,16, and 20 MPa), a compromise value of 14 mm was set for the axial spacing S L (i.e., the distance between the centerline of the micromold cavity and the jet axis) to ensure that the cavitation impact forming zone was located stably in the central region of the micromold.…”

Section: Methodsmentioning

confidence: 95%

“…The effects of the nozzle structure, spray pressure, target distance, and other process parameters on the microstructure changes of the materials were revealed. Marcon et al [12] used the high-energy shock wave of water-jet cavitation to bend the duralumin alloy sheet of an aircraft wing and discovered that the cavitation nozzle exhibited a large deformation curvature. Tsuda et al [13] combined quenching with cavitation shot peening to strengthen a carbon-steel spiral gear.…”

Section: Introductionmentioning

confidence: 99%

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Water-Jet Cavitation Shock Bulging as Novel Microforming Technique

Fan

Guo

et al. 2021

Chin. J. Mech. Eng.

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With the continuous expansion of the application range of microelectromechanical systems, microdevice forming technology has achieved remarkable results. However, it is challenging to develop new microforming processes that are low cost, environmentally friendly, and highly flexible; the high-energy shock wave in a cavitation bubble’s collapse process is used as the loading force. Herein, a new process for the microbulging of the water-jet cavitation is proposed. A series of experiments involving the water-jet cavitation shock microbulging process for TA2 titanium foil is performed on an experimental system. The microforming feasibility of the water-jet cavitation is investigated by characterizing the shape of the formed part. Subsequently, the effects of the main parameters of the water-jet cavitation on the bulging profile, forming depth, surface roughness, and bulging thickness distribution of TA2 titanium foil are revealed. The results show that the plastic deformation increases nonlinearly with the incident pressure. When the incident pressure is 20 MPa, the maximum deformation exceeds 240 μm, and the thickness thinning ratio changes within 10%. The microbulging feasibility of water-jet cavitation is verified by this phenomenon.

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Section: Methodsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Water-Jet Cavitation Shock Bulging as Novel Microforming Technique

Fan

Guo

et al. 2021

Chin. J. Mech. Eng.

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“…Soyama realized "a cavitating jet in air" by injecting a high-speed water jet into a low speed water jet, which was injected into air without a water-filled chamber, and demonstrated the introduction of compressive residual stress into a metallic surface and the resulting improvement of fatigue strength of stainless steel [27,28] and nitrocarburized steel [29]. The cavitating jet in air research has been followed by Marcon et al [30,31]. The differences produced by the introduced distribution of compressive residuals stress between a cavitating jet in water and a cavitating jet in air is summarized in Section 4.1.…”

Section: History Of Cavitation Peeningmentioning

confidence: 99%

Cavitation Peening: A Review

Soyama

2020

Metals

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The most popular surface modification technology used to enhance the mechanical properties of metallic materials is shot peening. Shot peening improves fatigue life and strength by introducing local plastic deformation pits. However, the pits increase surface roughness, which is a disadvantage for fatigue properties. Recently, cavitation peening, in which cavitation bubble collapse impacts are used, has been developed as an advanced surface modification technology. The advantage of cavitation peening is the lesser increase in surface roughness compared with shot peening, as no solid collisions occur in cavitation peening. In conventional cavitation peening, cavitation is generated by injecting a high-speed water jet into water. However, cavitation peening is different from water jet peening, in which water column impacts are used. In the present review, to avoid confusing cavitation peening and water jet peening, fundamentals and mechanisms of cavitation peening are described in comparison to water jet peening, and the effects and applications of cavitation peening are reviewed compared with the other peening methods.

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“…The formation and collapse of the bubbles induces the cavitation sonic vibration effect. In the process of bubble collapse, a local high temperature of about 5000 K and a pressure of 500 atmospheres is generated, accompanied by a strong shock wave and high-speed micro-jets [16]. Thus, strong vibrations are produced by the cavitation sonic effect.…”

Section: Cavitation Sonic Vibration Effect Of the Sowjmentioning

confidence: 99%

Coalbed Methane Extraction Using the Self-Oscillating Water Jet Slotting Method

Liu

Xia

2018

Energies

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Self-oscillating Water Jet (SOWJ) slotting in Coalbed Methane (CBM) is proposed to overcome low gas permeability, high gas desorption, and difficult mining in deep coal beds. SOWJ slotting excitation expands the fracture network, increases coal permeability, and strengthens gas desorption. The coupled effect of these three processes increases CBM extraction. Analysis of the characteristics of SOWJ, the effect of coal slotting, and changes in coal permeability shows that (1) SOWJ impacts on coal-rock mass, forming the erosion-peeling zone, fragmentation zone, and distal conical crack zone in the rock. The jet impact and cavitation sonic vibrating effect generate coal vibration; (2) The slots and fractures formed by the jets release the coal's elastic energy, depressurising the coal and changing the stress field. The stress redistribution further expands the fractures and the subsequent perforative fracture network; (3) Slot formation increases the coal's exposed area, changing the gas flow pattern. The decrease of effective stress increases coal permeability; the vibration characteristics of the jets and the cavitation sonic vibrating effect enhance gas desorption, which increases gas emission; (4) Extraction field tests showed that single-hole extraction of CBM from conventional boreholes was 1606 m 3 and the average standard scalar volume was 0.01 m 3 /min, compared to 7081 m 3 and 0.042 m 3 /min for SOWJ slotting boreholes, 4.41 and 4.2 times, respectively, of the conventional boreholes. Thus, SOWJ slotting can significantly improve CBM mining.

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Effect of jet velocity in co-flow water cavitation jet peening

Cited by 34 publications

References 30 publications

Water-Jet Cavitation Shock Bulging as Novel Microforming Technique

Water-Jet Cavitation Shock Bulging as Novel Microforming Technique

Cavitation Peening: A Review

Coalbed Methane Extraction Using the Self-Oscillating Water Jet Slotting Method

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