Details
| Original language | English |
|---|---|
| Article number | 106453 |
| Journal | Ultrasonics |
| Volume | 115 |
| Early online date | 25 Apr 2021 |
| Publication status | Published - Aug 2021 |
Abstract
Holes in housings, shafts and flanges lead to stress concentrations when the components are working under high dynamic loads. Peening methods are commonly used to improve the stress concentration and extend the working life. These methods, however, are difficult to treat the inner surface of the holes in the components because these surfaces are fully shadowed and limit the access of the shot streams, water jets or laser beams. A new developed method using ultrasonic cavitation can be expected to solve these problems by using a sonotrode with a special shape. The working principle is that the fluid enters through a narrow gap between the sonotrode and the inner surface to create a cavitation. In this paper, a new sonotrode was designed and manufactured, then tested at a resonance frequency of 23.8 kHz. The sono-chemiluminescence experiments were carried out to detect the cavitation intensity on the inner surfaces. The stainless-steel tubes were treated, and their surface properties were evaluated as well. The results show that the cavitation intensity is strongest at the working distance of 1 mm. The hardness increased by about 12% without the significant change of surface roughness.
Keywords
- Holes, Inner surface, Surface properties, Ultrasonic cavitation peening
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Acoustics and Ultrasonics
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In: Ultrasonics, Vol. 115, 106453, 08.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A novel inner surface enhancement method for holes utilizing ultrasonic cavitation
AU - Bai, Fushi
AU - Wang, Liang
AU - Yang, Kunde
AU - He, Zhengyao
AU - Liu, Chang
AU - Twiefel, Jens
N1 - Funding Information: This research was supported by the National Natural Science Foundation of China under Grants 11974284, 51905262, U2037603 and the Fundamental Research Funds for the Central Universities under Grant (3102019HHZY03003; 3102019HHZY030017).
PY - 2021/8
Y1 - 2021/8
N2 - Holes in housings, shafts and flanges lead to stress concentrations when the components are working under high dynamic loads. Peening methods are commonly used to improve the stress concentration and extend the working life. These methods, however, are difficult to treat the inner surface of the holes in the components because these surfaces are fully shadowed and limit the access of the shot streams, water jets or laser beams. A new developed method using ultrasonic cavitation can be expected to solve these problems by using a sonotrode with a special shape. The working principle is that the fluid enters through a narrow gap between the sonotrode and the inner surface to create a cavitation. In this paper, a new sonotrode was designed and manufactured, then tested at a resonance frequency of 23.8 kHz. The sono-chemiluminescence experiments were carried out to detect the cavitation intensity on the inner surfaces. The stainless-steel tubes were treated, and their surface properties were evaluated as well. The results show that the cavitation intensity is strongest at the working distance of 1 mm. The hardness increased by about 12% without the significant change of surface roughness.
AB - Holes in housings, shafts and flanges lead to stress concentrations when the components are working under high dynamic loads. Peening methods are commonly used to improve the stress concentration and extend the working life. These methods, however, are difficult to treat the inner surface of the holes in the components because these surfaces are fully shadowed and limit the access of the shot streams, water jets or laser beams. A new developed method using ultrasonic cavitation can be expected to solve these problems by using a sonotrode with a special shape. The working principle is that the fluid enters through a narrow gap between the sonotrode and the inner surface to create a cavitation. In this paper, a new sonotrode was designed and manufactured, then tested at a resonance frequency of 23.8 kHz. The sono-chemiluminescence experiments were carried out to detect the cavitation intensity on the inner surfaces. The stainless-steel tubes were treated, and their surface properties were evaluated as well. The results show that the cavitation intensity is strongest at the working distance of 1 mm. The hardness increased by about 12% without the significant change of surface roughness.
KW - Holes
KW - Inner surface
KW - Surface properties
KW - Ultrasonic cavitation peening
UR - http://www.scopus.com/inward/record.url?scp=85105696849&partnerID=8YFLogxK
U2 - 10.1016/j.ultras.2021.106453
DO - 10.1016/j.ultras.2021.106453
M3 - Article
C2 - 33932642
AN - SCOPUS:85105696849
VL - 115
JO - Ultrasonics
JF - Ultrasonics
SN - 0041-624X
M1 - 106453
ER -