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Submerged arc welding is well-known for its very high deposition rate and thus the capability to join very high thickness metal pieces in large structural applications. Fillet joints are mostly used in structural applications which can be extensively seen in shipbuilding, bridge construction, house buildings, automobile or any other large structures. Thermal stresses generates in a fusion welded joint due to high temperature gradient, which is the cause of the residual stresses upon cooling followed by the angular deformation and failure of the welded structure. As an effect of the thermal gradient, the induced longitudinal, transverse residual stress & angular distortion can vary in single sided and double sided submerged arc welded fillet joints, during designing & manufacturing welded structures which should be taken into account. The main objective of this paper is to quantify the amount of residual stresses and angular deformation in a fillet welding joint. An elasto-plastic thermomechanical model has been developed for predicting residual stresses. A comparison of the residual stress and angular deformation between single and double sided fillet weld joint has been made. The simulation results reveal that the amount of residual stress present in the single sided fillet weld is more and unbalanced in both side of the center of weld line compared to the double sided fillet weld and the predicted results have been matched with the experiments as well as published literatures. 相似文献
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Wireless Personal Communications - A compact dual parallel slotted-patch antenna having a single offset feed on the corner side is presented. The antenna geometry comprises parallel and horizontal... 相似文献
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Morphologies and characteristics of deformation induced martensite during tensile deformation of 304 LN stainless steel 总被引:1,自引:0,他引:1
Arpan Das S. Sivaprasad M. Ghosh P.C. Chakraborti S. Tarafder 《Materials Science and Engineering: A》2008,486(1-2):283-286
The austenite γ (fcc) matrix of 304 LN stainless steel transforms readily to martensites (hcp) and ′ (bcc) on deformation. The formation and nucleation mechanism of deformation induced martensite (DIM) during tensile deformation of 304 LN stainless steel has been studied at various strain rates in room temperature. It is investigated that the enhancement of strain rates during tensile deformation promotes the early formation of DIM, while suppressing its saturation value at fracture. Extensive transmission electron microscopy (TEM) studies showed more than one nucleation site for martensite transformation and the transformation mechanisms were observed to be γ (fcc) → (hcp), γ (fcc) → ′ (bcc) and γ (fcc) → (hcp) → ′ (bcc). 相似文献
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Palash Poddar Arpan Das K. L. Sahoo 《Metallurgical and Materials Transactions A》2014,45(4):2270-2283
The paper deals with the wear behavior of conventional cast Mg-Sn-based alloys. The alloys were studied through pin-on-disk wear test under four different loading conditions; namely, 9.8, 19.6, 29.4, and 39.2 N. The study highlights the cumulative wear loss, volumetric wear loss, dry sliding wear rate, and coefficient of friction of the alloys. The volumetric wear increased with increasing applied load. The wear mechanism was studied with scanning electron microscope. The wear occurs mainly by plowing mechanism and also by delamination. During wear, extensive plastic deformation and work hardening occurred. Microstructural analysis has been carried out for all the alloys at different loading conditions. 相似文献
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Mohanta Abinash Pradhan Arpan Mallick Monalisa Patra K. C. 《Water Resources Management》2021,35(13):4535-4559
Water Resources Management - Accurate prediction of shear stress distribution along the boundary in an open channel is the key to solving numerous critical engineering problems such as flood... 相似文献
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Wireless Networks - A compact 4 element MIMO antenna operating in three Sub-6 GHz 5G bands is proposed. The single element antenna consists of a square-shaped patch where circular and... 相似文献
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In this paper we make use of two non-maximally entangled three-qubit channels for probabilistically teleporting arbitrary two particle states from a sender to a receiver. We also calculate the success probability of the teleportation. In the protocol we use two measurements of which one is a POVM and the other is a projective measurement. The POVM provides the protocol with operational advantage. 相似文献
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Chang Donghoon Jati Arpan Mishra Sweta Sanadhya Somitra Kumar 《International Journal of Information Security》2019,18(2):163-180
International Journal of Information Security - Increasing threat of password leakage from compromised password hashes demands a resource consuming password-hashing algorithm to prevent the... 相似文献
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