Results 21 to 30 of about 146,641 (261)
Expansion of oval tubes: prediction and experiment [PDF]
ESAFORM 2021, 2021 The manufacturing of oval tubes for automotive components from sheets consists of several steps, from the flat sheet to a tube with expanded ends. It involves roll-bending of tubes, welding and several expansion processes with segmented tools. Forming steps in this process are subject to springback after the release of tools. Finite-element-simulations
Markus Stennei +6 more
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Experimental Testing of Oil Flooded Hermetic Scroll Compressor Effect on the Vapour Compression Cycle Performance [PDF]
Engineering and Technology Journal, 2014 An experimental studies of the performance of a heat pump are conducted to cover the effect of oil flooding, oil cooling and type of expansion devices. These studies show that there is an improvement in the performance factor with oil addition up to 9.2%
Isbeyeh W. Maid +2 more
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Multistage axial hydro-forging sequence of double-stepped tube with large expansion ratio
International Journal of Lightweight Materials and Manufacture, 2020 In order to manufacture the double-stepped tube with large expansion ratio, a multistage axial hydro-forging sequence was proposed by combination of hydroforming with movable dies in this paper. The new forming process is divided into four stages. In the
Lei Sun +3 more
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The Dural Tube Continues to Expand after Muscle-Preserving Cervical Laminectomy
Spine Surgery and Related Research, 2019 Introduction: The purpose of this study was to elucidate the duration for which the dural tube continues to expand after muscle-preserving cervical laminectomy and the extent to which the expansion affects surgical outcomes.
Ryoma Aoyama +6 more
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A luminal glycoprotein drives dose-dependent diameter expansion of the Drosophila melanogaster hindgut tube. [PDF]
PLoS Genetics, 2012 An important step in epithelial organ development is size maturation of the organ lumen to attain correct dimensions. Here we show that the regulated expression of Tenectin (Tnc) is critical to shape the Drosophila melanogaster hindgut tube.
Zulfeqhar A Syed +7 more
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IEEE Access, 2020 Non-uniform axial deformation and tube wall thinning are the main issues restricting the further development of the tube electromagnetic bulging technology.
Li Qiu +8 more
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Metals, 2022 Traditional separation methods for thick-walled metal tubes include turning and sawing, which suffer from wasted raw material and low efficiency. In view of this, this paper proposes a new process of using impact load to promote crack generation and tube
Ren-Feng Zhao +5 more
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Shock and Vibration, 2021 To explore the influence of microexpansive concrete self-stress on the performance of steel pipe concrete, the expansion rate test of microexpansive concrete confined by steel tube was carried out with different expansion rates.
Xin Liu +4 more
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Wear resistance and anti-friction of expansion cone with hard coating
Petroleum Exploration and Development, 2016 To improve wear resistance of expansion cone and decrease the friction between cone and tube, an expansion cone covered by hard coating was prepared and applied in the field.
Songbo WEI +6 more
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Comparison study between theoretical analysis and artificial neural network of the capillary tube
Journal of Thermal Engineering, 2021 The main purpose of expansion devices is reduced the higher pressure of the working fluid from the condenser pressure to the evaporator pressure. There are several kinds of expansion devices, one of these types is capillary tube which is common utilized ...
Basim FREEGAH +2 more
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