Investigations of the Short Transverse Monotonic and Fatigue Strengths of Various Ship-Quality Steels

2009 ◽  
pp. 35-35-22
Author(s):  
KJ Pascoe ◽  
PR Christopher
Keyword(s):  
Short Transverse

scholarly journals The inclusion of short-transverse displacements in the eigenstrain reconstruction of residual stress and distortion in in740h weldments

2018 ◽  
Vol 36 ◽  
pp. 601-612 ◽  
Author(s):  
Fatih Uzun ◽  
Joris Everaerts ◽  
León Romano Brandt ◽  
Mehmet Kartal ◽  
Enrico Salvati ◽  
...  
Keyword(s):  
Residual Stress ◽  
Short Transverse

scholarly journals On the exact solitary wave solutions to the long-short wave interaction system

2018 ◽  
Vol 22 ◽  
pp. 01063
Author(s):  
Haci Mehmet Baskonus ◽  
Tukur Abdulkadir Sulaiman ◽  
Hasan Bulut
Keyword(s):  
Solitary Wave ◽  
Wave Interaction ◽  
Expansion Method ◽  
Short Wave ◽  
Complex Model ◽  
Solitary Wave Solutions ◽  
Short Transverse ◽  
Wave Solutions ◽  
Interaction System ◽  
2D And 3D

In this paper, the application of the simplified the extended sinh-Gordon equation expansion method to the long-short-wave interaction system. We successfully construct various solitary wave solutions to this nonlinear complex model. The long-short-wave interaction system describes the interaction between one long longitudinal wave and one short transverse wave propagating in a generalized elastic medium. The 2D and 3D surfaces to some of the obtained solutions are plotted.

Generic redefinition, key and two new species of Acorystus Townes (Hymenoptera: Ichneumonidae: Cryptinae)

Zootaxa ◽  
2019 ◽  
Vol 2721 (1) ◽  
pp. 28
Author(s):  
MARCUS V. SCHERRER ◽  
BERNARDO F. SANTOS ◽  
ALEXANDRE P. AGUIAR
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
New Taxa ◽  
Body Surface ◽  
Amazon Basin ◽  
Southeastern Brazil ◽  
Short Transverse ◽  
White Band ◽  
Two New Species ◽  
Conical Horn

The taxonomic limits of Acorystus are reviewed. The genus is characterized by a body surface shiny and mostly impunctate, supra-antennal area with a conical horn, epomia and posterior transverse carina of propodeum entirely absent, ovipositor tip very slender, without nodus and with very weak teeth. Two new taxa, A. albicornis Scherrer et Santos, sp. nov., and A.circumflexus Scherrer et Santos, sp. nov., are described and illustrated. Acorystus albicornis is diagnosed mainly by the white band of the female flagellum covering only about five flagellomeres, supra-antennal area with a white central horn, with a very weak and slightly rugose longitudinal swelling, orbital band reaching supra-clypeal and supra-antennal areas, propodeum with anterior transverse carina almost straight, and pleural carina very weak, with short transverse wrinkles. It is recorded from two close localities at Espírito Santo State (19º57’55”S 40º32’25”W and 20º16’21”S 40º28’40”W), in the Atlantic Forest of Southeastern Brazil. Acorystus circumflexus is diagnosed mainly by the white band of the female flagellum covering about fifteen flagellomeres, supra-antennal area with a black central horn, with a strong and rugose longitudinal swelling, orbital band absent, propodeum with anterior transverse carina centrally arched forwards, and pleural carina entirely absent. It is recorded only from Caxiuanã (2º4’54”S 51º51’5”), Eastern Amazon Basin. A key to all three known species of the genus is provided.

Phase Composition, Texture and Mechanical Properties of 80 mm Plates of Al-2.8Cu-1.7Li-0.5Mg-0.5Zn-0.1Zr-0.06Sc Alloy

2016 ◽  
Vol 877 ◽  
pp. 290-295
Author(s):  
Sergey Betsofen ◽  
Vladislav Antipov ◽  
Maxim Knyazev ◽  
Margarita Dolgova
Keyword(s):  
Mechanical Properties ◽  
Phase Composition ◽  
Yield Stress ◽  
Texture Component ◽  
Transverse Direction ◽  
Plate Thickness ◽  
Short Transverse ◽  
Δ Phase ◽  
Medium Layer ◽  
Plate Plane

Phase composition, texture and mechanical properties of plates 80 mm thick from Al-2.8Cu-1.7Li-0.5Mg-0.5Zn-0.1Zr-0.06Sc alloy were investigated. It has been found that strength characteristics are maximum in median section (ultimate strength and the yield stress of 570 MPa and 540 MPa, respectively). In 0,25T section (where T is the plate thickness) these quantities make 530 MPa and 490 MPa, and in the short transverse direction of only 490 MPa and 440 MPa. Textural studies showed that on medium layer of a plate 0,3-0,35T thick is observed identical to a matrix and δ'-phase intensive single-component texture with an arrangement of the plane {011} parallel to the plate plane with domination of a "brass" texture component {110} <112>.

scholarly journals Effect of Cu on the Fracture and Exfoliation Corrosion Behavior of Al-Zn-Mg-xCu Alloy

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1048 ◽  
Author(s):  
Huibin Jiao ◽  
Kanghua Chen ◽  
Songyi Chen ◽  
Zhen Yang ◽  
Peng Xie ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Exfoliation Corrosion ◽  
Cu Content ◽  
Short Transverse ◽  
Transmission Electron ◽  
Corrosion Behaviors ◽  
Mechanical Tensile ◽  
Scanning Electron ◽  
Better Than

In the present work, the influence of Cu content on microstructure, mechanical properties and exfoliation corrosion behaviors of Al-Zn-Mg-xCu alloy extrusions has been investigated in longitudinal-transverse (L-T) and short-longitudinal (S-L) directions by means of mechanical tensile and exfoliation corrosion testing combined with optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results showed that a higher Cu content significantly decreased the fracture toughness and ductility of the alloy in S-L direction compared with L-T direction. Concomitant with the increase in Cu content, a transition in fracture mode was observed from transgranular dimpled rupture to intergranular rupture in S-L direction. Moreover, the exfoliation corrosion (EXCO) resistance of the alloy decreased as the Cu content increased and the exfoliation corrosion resistance of the alloy in short-transverse (S-T) direction was better than that of L-T direction. These results were mainly associated with the large number of coarse intermetallics caused by high Cu content in the L-T direction of alloy.

Tensile Properties of Large Extrusion and Forgings of RS P/M Al-9Fe-1.9Mo-1.7Si Aluminum Alloy

2007 ◽  
Vol 546-549 ◽  
pp. 1077-1080
Author(s):  
P.Y. Li ◽  
W. Li ◽  
X.L. He ◽  
Sheng Long Dai ◽  
S.Y. Wang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Elevated Temperature ◽  
Powder Metallurgy ◽  
Inert Gas ◽  
Gas Atomization ◽  
Short Transverse ◽  
Powder Metallurgy Process ◽  
Longitudinal Orientation ◽  
Rapidly Solidified ◽  
Metallurgy Process

Large extrusion and forgings of Al-9Fe-1.9Mo-1.7Si (wt.%, FMS0918) aluminum alloy for elevated temperature applications were produced by rapidly solidified powder metallurgy process. Powders of FMS0918 alloy were produced by inert gas atomization, and then screened, canned, degassed, extruded and forged. The extrusion exhibited good strengths and elongation in longitudinal orientation, but low elongation in long- and short-transverse orientations. After forged, the tensile strengths of the forgings showed little change, but the long- and short-transverse elongation was improved.

scholarly journals A network of transverse and longitudinal intermediate filaments is associated with sarcomeres of adult vertebrate skeletal muscle.

1983 ◽  
Vol 96 (2) ◽  
pp. 562-570 ◽  
Author(s):  
K Wang ◽  
R Ramirez-Mitchell
Keyword(s):  
Intermediate Filaments ◽  
Intermediate Filament ◽  
Electron Microscopic ◽  
Double Ring ◽  
Short Transverse ◽  
Sds Page ◽  
Scanning Electron Microscopic ◽  
Microscopic Studies ◽  
Filament Network ◽  
Rabbit Skeletal Muscles

An extensive network of transverse and longitudinal filamentous bridges was revealed when small myofibril bundles, prepared from Triton-EGTA-treated rabbit skeletal muscles, were extracted with Kl to remove the majority of thin and thick filaments. Transmission and scanning electron microscopic studies of these salt-resistant cytoskeletal residues indicated (a) small bundles of short transverse filaments connect adjacent myofibrils by forming Z to Z and M to M bridges; (b) parallel, continuous longitudinal filaments connect the peripheries of successive Z-disks and ensheath the sarcomere. These transverse and longitudinal filaments have the characteristic morphology of intermediate filaments; (c) two rings of tightly interwoven and tangled filaments, connected laterally by short filaments, encircle each Z disk. This double-ring also encircles a weblike meshwork which penetrates the sarcomeric space. From the peripheries of these rings, transverse and longitudinal intermediate filaments emerge; and (d) a massive amount of material translocated and accumulated near Z disks during Kl extraction. The residues were fairly resistant to solubilization by urea and SDS, and complete dissolution was achieved only with guanidinium chloride. SDS PAGE indicated that the residues consisted mainly of titin, nebulin, and variable amounts of residual myosin and actin. Desmin represented only a few percent of total residual proteins; however, it may be a major component of the intermediate filament network. We suggest that the intermediate filament should be considered an integral sarcomeric component that may play important cytoskeletal roles in muscle structure and mechanics.

scholarly journals Space-time evolution of electron-beam driven electron holes and their effects on the plasma

2003 ◽  
Vol 10 (1/2) ◽  
pp. 53-63 ◽  
Author(s):  
N. Singh
Keyword(s):  
Electron Beam ◽  
Plasma Density ◽  
Three Dimensional ◽  
Low Frequency ◽  
Velocity Distribution Function ◽  
Lower Hybrid ◽  
Particle In Cell ◽  
Short Transverse ◽  
Electron Holes ◽  
Number Of Electron Holes

Abstract. We report here further results from the three-dimensional particle-in-cell simulations of the electron-beam driven electron holes. We focus here on (i) the transformation of oscillatory waves driven by the electron-beam instability into electron holes, (ii) the continued evolution and propagation of electron holes after their formation, including merging of electron holes, and (iii) the effects of the evolution on the plasma density and ion velocity distribution function. We find that initially electron-beam modes with perpendicular wave numbers k^ = 0 and as well as k^ ≠ 0 are driven resonantly below the electron plasma frequency of the target plasma. The modes interact nonlinearly and modulate each other both in space and time, producing wave structures with finite perpendicular scale lengths. Nonlinear evolution of such wave structures generates the electron holes in the simulations. Initially, a large number of electron holes form in the plasma. Their merging yields continuously a decreasing number of electron holes. The propagation velocity of the electron holes evolves dynamically and is affected by their merging. At late times only a few electron holes are left in the simulation and they decay by emitting low-frequency electrostatic whistler waves just above the lower hybrid (LH) frequency vlh . These waves, which are long structures parallel to the ambient magnetic field B0 and quite short transverse to B0, are associated with similar structures in the plasma density, producing density filaments. It turns out that electron-beam driven plasmas, in general, develop such filaments at some stage of the evolution of the beam-driven waves. In view of the excitation of the LH waves near vlh, which could resonate with the ions, an analysis shows that it is possible to heat transversely the ions in a time scale of a few seconds in the auroral return current plasma, in which electron holes and transversely heated ions have been simultaneously observed.

Effect of Intermediate Thermomechanical Treatment on Microstructure and Mechanical Properties of 2A97 Al-Li Alloy

2019 ◽  
Vol 960 ◽  
pp. 70-77
Author(s):  
Juan Yu ◽  
Zheng Lu ◽  
Yan Cai Xiong ◽  
Guo Ai Li ◽  
Zhao Hui Feng
Keyword(s):  
Mechanical Properties ◽  
Thermomechanical Treatment ◽  
Tensile Testing ◽  
Transverse Direction ◽  
Thick Plate ◽  
High Energy ◽  
Short Transverse ◽  
Compression Deformation ◽  
Δ Phase ◽  
Alloy Increase

Effect of intermediate thermomechanical treatment on tensile properties at short-transverse direction, fracture mechanism and microstructure of 2A97 Al-Li alloy thick plate were studied by tensile testing, SEM, EBSD and TEM.The results show that with the increasing of compression deformation, the strength and elongation of the alloy increase first and then decrease slightly. The fracture mode of the alloy changes from quasi-cleavage fracture to high energy ductile fracture. When the compression deformation rises to 20%, the elongated structure are replaced by a more uniform and equiaxial structure. The distribution of δ phase distribute more homogeneously in the grains.

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