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Reverse-polarity plasma cutting of rolled Ti-5Al-5V-5Mo titanium alloy thick plates
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-06 DOI: 10.1007/s11182-024-03282-2
A. V. Grinenko, A. V. Chumaevskii, A. O. Panfilov, D. A. Gurianov, E. A. Sidorov, E. A. Kolubaev
{"title":"Reverse-polarity plasma cutting of rolled Ti-5Al-5V-5Mo titanium alloy thick plates","authors":"A. V. Grinenko,&nbsp;A. V. Chumaevskii,&nbsp;A. O. Panfilov,&nbsp;D. A. Gurianov,&nbsp;E. A. Sidorov,&nbsp;E. A. Kolubaev","doi":"10.1007/s11182-024-03282-2","DOIUrl":"10.1007/s11182-024-03282-2","url":null,"abstract":"<div><p>The paper presents research results of reverse-polarity plasma cutting of thick Ti-5Al-5V-5Mo titanium alloy plates. It is shown that 300 A current is the best for plasma cutting of 20 and 40 mm thick plates, and for 70-mm thick plates, the best is the current of 350 A. The surface layer includes the molten metal, oxide layers, and heat-affected zone. Traces of molten titanium are observed on the sample surface after its displacement from the work area by the water-air mixed flow. The use of the water mist generation system improves the quality of the work area, but does not reduce the material oxidation during cutting.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 10","pages":"1562 - 1568"},"PeriodicalIF":0.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical study of therapeutic shockwave treatment on a thoracic spine segment
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-06 DOI: 10.1007/s11182-024-03301-2
G. M. Eremina, A. Yu. Smolin
{"title":"Numerical study of therapeutic shockwave treatment on a thoracic spine segment","authors":"G. M. Eremina,&nbsp;A. Yu. Smolin","doi":"10.1007/s11182-024-03301-2","DOIUrl":"10.1007/s11182-024-03301-2","url":null,"abstract":"<div><p>Malignant tumors arising from mesenchymal tissues (bones or cartilages) have the worst prognosis. Currently, the development of minimally invasive and non-invasive methods for treating patients in the early stages, used separately and in combination with existing treatment methods, is relevant. In this work, we study numerically the mechanical behavior of the thoracic spine affected by osteosarcoma under shock wave treatment using an invasive applicator placement technique. The results obtained indicate that the optimal range for initiating the deactivation process with minimal risks of bone tissue destruction is the shock wave loading with energy flux density (EFD) in the range from 0.005 to 0.15 mJ/mm<sup>2</sup>. By further increasing in the amplitude of the therapeutic shock wave treatment (with invasive installation of the applicator), the formation and expressive growth of stroma around the tumor is possible.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 10","pages":"1699 - 1705"},"PeriodicalIF":0.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prediction of high-level cloud parameters based on polarization lidar observations using machine learning tools
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-06 DOI: 10.1007/s11182-024-03310-1
M. Penzin, O. Kuchinskaia, I. Akimov, D. Romanov, I. Bryukhanov, I. Samokhvalov
{"title":"Prediction of high-level cloud parameters based on polarization lidar observations using machine learning tools","authors":"M. Penzin,&nbsp;O. Kuchinskaia,&nbsp;I. Akimov,&nbsp;D. Romanov,&nbsp;I. Bryukhanov,&nbsp;I. Samokhvalov","doi":"10.1007/s11182-024-03310-1","DOIUrl":"10.1007/s11182-024-03310-1","url":null,"abstract":"<div><p>The paper focuses on machine learning methods in atmospheric laser remote sensing. Atmospheric lidar data have been stored since 2009, when high-altitude matrix polarization lidar measurements became systematic. Light detection and ranging (lidar) data are used to determine optical (backscattering phase matrix (BSPM), thickness, and scattering ratio) and geometrical (altitude of lower and upper boundary, vertical extent) parameters of higher-level clouds. The data storage is then added by meteorological parameters derived from radiosonde observations and ERA5 reanalysis data (temperature, relative and specific humidity, wind speed and direction). Methodology includes machine learning models, random forest, and modified version incorporating principal component analysis for dimensionality reduction to probe the complex relationship between meteorological parameters and specific BSPM elements. For the first time, different lidar measurement techniques identify two distinct maxima in the distribution of BSPM elements.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 10","pages":"1766 - 1772"},"PeriodicalIF":0.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Failure mechanism in an epoxy adhesive layer under compression + shear testing at −50 °C
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-06 DOI: 10.1007/s11182-024-03300-3
S. V. Smirnov, I. A. Veretennikova, D. I. Vichuzhanin, A. V. Pestov, S. A. Rogovaya
{"title":"Failure mechanism in an epoxy adhesive layer under compression + shear testing at −50 °C","authors":"S. V. Smirnov,&nbsp;I. A. Veretennikova,&nbsp;D. I. Vichuzhanin,&nbsp;A. V. Pestov,&nbsp;S. A. Rogovaya","doi":"10.1007/s11182-024-03300-3","DOIUrl":"10.1007/s11182-024-03300-3","url":null,"abstract":"<div><p>The paper presents the results of studying the fracture of an epoxy layer in modified Brazil-nut-sandwich specimens. The effect of the angle α between the compression direction and the plane of the epoxy-metal interface on the fracture pattern is studied. The specimens with three adhesive compositions synthesized on the basis of the ED-20 epoxy resin are tested. It has been found that the cohesive failure mechanism dominates only at the angle α = 0° for all the epoxy compositions. The failure mechanism changes to the mixed adhesive-cohesive one as the angle α increased.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 10","pages":"1692 - 1698"},"PeriodicalIF":0.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Annealing effect on structure, phase composition and mechanical properties of high-nitrogen austenitic steel
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-06 DOI: 10.1007/s11182-024-03292-0
A. V. Kim, N. A. Polekhina, I. Yu. Litovchenko, S. A. Akkuzin
{"title":"Annealing effect on structure, phase composition and mechanical properties of high-nitrogen austenitic steel","authors":"A. V. Kim,&nbsp;N. A. Polekhina,&nbsp;I. Yu. Litovchenko,&nbsp;S. A. Akkuzin","doi":"10.1007/s11182-024-03292-0","DOIUrl":"10.1007/s11182-024-03292-0","url":null,"abstract":"<div><p>The paper presents transmission and scanning electron microscopy investigations of the microstructure, dispersed particle precipitation and mechanical properties of the high-nitrogen austenitic steel VNS-53-Sh after 700 °C annealing for 10 h. It is shown that dispersed particles of Cr<sub>2</sub>N chromium nitrides and M<sub>23</sub>C<sub>6</sub> carbides precipitate after annealing. The volume fraction of each particle type does not exceed 1%. Nitrides precipitate near the grain boundaries via discontinuous precipitation of austenite with the cell formation. Carbides precipitate at the grain boundaries and incoherent twin boundaries coherently with the austenite matrix. The dislocation density decreases by about an order of magnitude relative to the quenched state. Yield and tensile strength decrease respectively by ≈1.2 and ≈1.1 times relative to the initial state. Elongation to fracture increases by 1.6 times. It is found that the dislocation substructure recovery and precipitation of dispersed particles affect strength and plastic properties of the VNS-53-Sh.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 10","pages":"1634 - 1640"},"PeriodicalIF":0.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of vibrational iterations of magnetized water on the physico-chemical properties of intact water
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-06 DOI: 10.1007/s11182-024-03304-z
V. V. Novikov
{"title":"Effect of vibrational iterations of magnetized water on the physico-chemical properties of intact water","authors":"V. V. Novikov","doi":"10.1007/s11182-024-03304-z","DOIUrl":"10.1007/s11182-024-03304-z","url":null,"abstract":"<div><p>It has already been shown that it is possible to obtain vibrational iterations (artificial material objects) through multiple vibration processing (crossing) of any substance (see Petrova A. et al. (2024)). In this work, using the same crossing technology, vibrational iterations were obtained from water exposed to various magnetic fields. They, like vibrational iterations from high- and low-molecular weight substances, were classified into groups (fractions) according to their physical and chemical properties.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 10","pages":"1718 - 1727"},"PeriodicalIF":0.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction to: Structure and properties of antiferromagnetic dirac semi-metal EuZnSb2
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-06 DOI: 10.1007/s11182-024-03315-w
Xiang Shi, Huxin Yin, Xucai Kan, Xiansong Liu, Yuyan Han
{"title":"Correction to: Structure and properties of antiferromagnetic dirac semi-metal EuZnSb2","authors":"Xiang Shi,&nbsp;Huxin Yin,&nbsp;Xucai Kan,&nbsp;Xiansong Liu,&nbsp;Yuyan Han","doi":"10.1007/s11182-024-03315-w","DOIUrl":"10.1007/s11182-024-03315-w","url":null,"abstract":"","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 10","pages":"1800 - 1802"},"PeriodicalIF":0.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Numerical Study of the Effect of Shock-Wave Loading of the Bone Matrix with Sarcoma on the Conditions for the Drug Transfer at Mesoscale
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-06 DOI: 10.1007/s11182-024-03309-8
I. P. Martyshina, G. M. Eremina, A. Yu. Smolin
{"title":"A Numerical Study of the Effect of Shock-Wave Loading of the Bone Matrix with Sarcoma on the Conditions for the Drug Transfer at Mesoscale","authors":"I. P. Martyshina,&nbsp;G. M. Eremina,&nbsp;A. Yu. Smolin","doi":"10.1007/s11182-024-03309-8","DOIUrl":"10.1007/s11182-024-03309-8","url":null,"abstract":"<div><p>Osteosarcoma is considered as one of the most aggressive types of cancer, capable of actively developing secondary tumors. Recent studies have shown that even relatively small values of biological fluid pressure, exceeding 20 kPa, can lead to a healthy cell migration. In this work, a numerical study is carried out at mesoscale to examine the influence of mechanical stimulation on bone tissue affected by neoplastic processes with the aim of regenerating skeletal tissue and deactivating cancerous areas. The modeling is performed using the method of movable cellular automata. The computer simulations show that the conditions for the transfer of healthy bone cell and delivery of medications to malignant tissues are created by a shock wave with an intensity higher than 0.1 mJ/mm<sup>2</sup>.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 10","pages":"1759 - 1765"},"PeriodicalIF":0.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of powder mixture mechanical activation on structure and properties of modified layers
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-06 DOI: 10.1007/s11182-024-03277-z
E. G. Bushueva, E. A. Pukhova, B. B. Batyrov, B. E. Grinberg
{"title":"Effect of powder mixture mechanical activation on structure and properties of modified layers","authors":"E. G. Bushueva,&nbsp;E. A. Pukhova,&nbsp;B. B. Batyrov,&nbsp;B. E. Grinberg","doi":"10.1007/s11182-024-03277-z","DOIUrl":"10.1007/s11182-024-03277-z","url":null,"abstract":"<div><p>The paper investigates the effect of the preliminary mechanical activation of boron- and chromium-containing powder mixtures on the structure and mechanical properties of modified layers deposited onto the chromium-nickel 0.12C-18Cr-9Ni-Ti austenitic steel surface using non-vacuum electron-beam surfacing. The mechanical activation of powder mixtures provides the formation of chromium borides with the mean particle size of 10 to 20 µm, resulting in the better quality of modified surface layers. The thickness of synthesized layers is 2 times higher than layers obtained by electron-beam surfacing without the preliminary mechanical activation of powder mixtures. The surface layer microhardness is also 2 times higher than in the 0.12C-18Cr-9Ni-Ti stainless steel.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 10","pages":"1524 - 1530"},"PeriodicalIF":0.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of technological modes of combined high-energy treatment on wear resistance of transition class titanium alloy
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-06 DOI: 10.1007/s11182-024-03294-y
V. P. Bagmutov, I. N. Zakharov, M. D. Romanenko, V. V. Barinov, V. V. Tikhaeva
{"title":"Influence of technological modes of combined high-energy treatment on wear resistance of transition class titanium alloy","authors":"V. P. Bagmutov,&nbsp;I. N. Zakharov,&nbsp;M. D. Romanenko,&nbsp;V. V. Barinov,&nbsp;V. V. Tikhaeva","doi":"10.1007/s11182-024-03294-y","DOIUrl":"10.1007/s11182-024-03294-y","url":null,"abstract":"<div><p>A contact interaction of the hardened steel 45 counterbody (pad) with the VT22 titanium alloy samples (rollers), treated with high-density alternating and direct currents, is studied during electromechanical treatment (EMT) and in its combination with isothermal aging. A 40–100-fold increase in the relative wear resistance of the VT22 surface-modified layer is revealed for the basic number of cycles compared to the as-received (initial) state. The microhardness of this layer is observed to increase by up to 40% over that in the as-received state. After high-energy exposure, the microstructure and its elements undergo significant changes, followed by the formation of multimodal gradient structures of different scale levels.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 10","pages":"1647 - 1653"},"PeriodicalIF":0.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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