Phenomenology of erosion wear of constructional steels and alloys by liquid particles

Seleznev, L. I.; Ryzhenkov, V. A.; Mednikov, A. F.

doi:10.1134/s004060151009003x

Cited by 18 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, in this work, we used data available in the literature to improve Heymann's model. Schmitt [13], Seleznev et al [14], Szprengiel et al [15,16], and Bech et al [9] published erosion results with drop impact on metals, rubber and elastomers for drop sizes ranging from 0.1 mm to 3.5 mm and impact velocities ranging from 100 m/s to 224 m/s. Based on these test results, the best representation of the drop size effect was found with a power of 1.5, as seen in Eq.…”

Section: Erosion Modelmentioning

confidence: 99%

Evaluation of wind turbine blades’ rain-induced leading edge erosion using rainfall measurements at offshore, coastal and onshore locations in the Netherlands

Caboni,

Slot,

Bergman

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The impingement of rain drops on wind turbine blades determines leading edge erosion (LEE) which is a factor driving high maintenance costs. In order to better quantify rain-induced LEE, we carried out detailed rainfall measurements, by means of disdrometers, in conjunction with wind speed measurements. Measurements were performed at three different Dutch sites, encompassing an offshore, a coastal and an onshore location. Based on rainfall and wind speed measurements, and assuming a virtual 15 MW wind turbine, we estimated the blade’s LEE using a fatigue-based model. Developed by means of different published rotating arm erosion data, our fatigue model relates the measured rainfall characteristics to the LEE incubation period, here assumed as the leading edge protection (LEP) system’s end of life. Assuming a polyurethane LEP system, results indicate that the blades’ incubation period is around 3.9 years at the offshore location, 6.6 years at the coastal location and 8.3 years at the onshore location. These results are connected to the higher wind speeds during rainfalls, and higher occurrences of very intense rainy events which, according to the measurements, progressively occur at the onshore, coastal and offshore locations.

show abstract

Section: Erosion Modelmentioning

confidence: 99%

Evaluation of wind turbine blades’ rain-induced leading edge erosion using rainfall measurements at offshore, coastal and onshore locations in the Netherlands

Caboni,

Slot,

Bergman

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…It is therefore important to understand the effects of strain hardening induced by impacts on WDE phenomenon. Various erosion test parameters such as droplet size [28,29], impact speed [7,9,30], impact angle [31], initial surface roughness [23,24] and target mechanical properties [9,[32][33][34][35] are known to influence the erosion performance and are studied in the literature. In this work, all parameters known to influence the erosion behavior are kept constant and only the effect of relieving strain accumulation is studied.…”

Section: Cmentioning

confidence: 99%

Effect Of Stress Relieving On Water Droplet Erosion Behavior In X22Crmov12-1 Steel

Shaik¹,

Gujba²,

Pugh³

et al. 2021

Progress in Canadian Mechanical Engineering. Volume 4

View full text Add to dashboard Cite

Water Droplet Erosion (WDE) is a wear erosion phenomenon observed in compressor blades of gas turbines and the blades of low-pressure sections of steam turbines. Repeated droplet impacts cause plastic deformation and strain hardening of the surface over extended periods of time. Strain accumulation from droplet strikes onto the target metal has been a contentious issue among researchers. Some researchers mentioned that strain hardening is beneficial in prolonging the life of blade material while others argue it shortens the blade life. This study aims to better understand the mechanisms during the early stages of the WDE process. X22CrMoV12-1 stainless steel, which is a commonly used steam turbine blade material, is chosen to study the effect of strain hardening during WDE. WDE tests were performed in a rotating disc erosion rig according to ASTM G73 standard. Impact speed of 300 m/s and droplet size of 460 microns were employed. Tests were interrupted at intervals of 2 minutes or 30 seconds and the accumulated stresses in test samples were intermittently relieved at 680°C for 75 minutes. With increasing frequency of stress relieving, pitting was observed on the stress relieved sample earlier than the reference sample (not stress relieved). The SEM micrographs showed varying mechanisms of material removal in the relieved samples compared to the reference samples. For instance, a noticeable size difference in the growing erosion pits was observed in the 30 seconds relieving test compared to the reference sample. A difference in the rate of erosion was also seen as the stress relieving was changed from every 2 minutes to every 30 seconds. This work concludes that a higher frequency of relieving had an influence on the incubation period. For instance, relieving after every 30 seconds of WDE testing showed an increase in incubation period compared to relieving after every 2 minutes of WDE testing. Frequent relieving helps reduce the erosion rate in comparison with the reference sample even though it had relatively shorter incubation. The proposed concept of intermittent relieving can help remove accumulated strain due to droplet impacts. This can prolong the life of blades mainly by elongating the initial stages of erosion.

show abstract

“…Nevertheless, this traditional representation of the erosion is lacking of important information about the experimental conditions, eg, the impacting water on the samples per cycle. Therefore, some authors reported the erosion results taking into account the impacting water, eg, Seleznev et al considered the mass of the impacting water on the sample surfaces and Mahdipoor et al the volume of impacting water per unit of area of the sample surface. Although these methods of reporting the erosion clearly improve the method proposed by the ASTM G73 standard test and they allow to compare the results obtained using drops of different sizes, they are still missing other relevant information about the experimental conditions, eg, running time, impingement velocity of drops, speed of sample, impact frequency, etc.…”

Section: Rain Erosion In Blade Leading Edgementioning

confidence: 99%

“…Nevertheless, this traditional representation of the erosion is lacking of important information about the experimental conditions, eg, the impacting water on the samples per cycle. Therefore, some authors reported the erosion results taking into account the impacting water, eg, Seleznev et al 96 standard test and they allow to compare the results obtained using drops of different sizes, they are still missing other relevant information about the experimental conditions, eg, running time, impingement velocity of drops, speed of sample, impact frequency, etc. Therefore, a further analysis in this direction is encouraged to be carried out due to this fact also helps in the design of the wind turbine blades and how they operate facing light, moderate, and heavy erosion, were defined to carry them out.…”

Section: Variables For Rain Erosionmentioning

confidence: 99%

Prospective challenges in the experimentation of the rain erosion on the leading edge of wind turbine blades

Bartolomé

Teuwen

2018

Wind Energy

View full text Add to dashboard Cite

Developments in the wind industry reveal intricate engineering challenges, one of them being the erosion on the leading edge of the wind turbine blades. In this review work, the main issues for the wind industry in the experimentation with respect to erosion are examined. After a historical and general overview of erosion, this review focuses on the rain erosion on the leading edge of the wind turbine blades giving prominence to (1) the rain simulations, (2) experimental erosion facilities, and (3) variables to characterise erosion. These three factors have to be improved to establish a research field enabling the prediction of erosion behaviour and providing useful information about how the rainfall affects the leading edge of the wind turbine blades. Moreover, these improvements in the experimentation of the erosion would be a first step to understand and predict the erosion damage of the wind turbine blades. Finally, this review work also will help to cope with experimental investigations and results in the rain erosion on the leading edge with a deeper critical thinking for future researchers.

show abstract

Phenomenology of erosion wear of constructional steels and alloys by liquid particles

Cited by 18 publications

References 0 publications

Evaluation of wind turbine blades’ rain-induced leading edge erosion using rainfall measurements at offshore, coastal and onshore locations in the Netherlands

Evaluation of wind turbine blades’ rain-induced leading edge erosion using rainfall measurements at offshore, coastal and onshore locations in the Netherlands

Effect Of Stress Relieving On Water Droplet Erosion Behavior In X22Crmov12-1 Steel

Prospective challenges in the experimentation of the rain erosion on the leading edge of wind turbine blades

Contact Info

Product

Resources

About