Strength condition
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Part 2 of ebook "Non-destructive testing in civil engineering 2000" provides readers with contents including: ultrasonic imaging of concrete members using an array system; influence of aggregates on ultrasonic elastic waves propagation in concrete; differential approach to ultrasonic testing of strength and homogeneity of concrete; measurements of thickness and crack depth in concrete by ultrasonic methods; basic study for an ultrasonic testing methods of PC grouting condition;...
381p tuongmothua 11-07-2024 1 1 Download
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Part 1 of ebook "IUTAM symposium on mesoscopic dynamics of fracture process and materials strength" provides readers with contents including: massively-parallel dislocation dynamics simulations; nondestructive observation of dislocation structures formed at fatigued copper and stainless steel crystals; a discrete dislocation dynamics investigation of formation and stability of lomer locks; on the use of periodic boundary conditions in dislocation dynamics simulations;...
248p mothoiphong 28-06-2024 1 1 Download
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The paper "Limit and shakedown analysis of structures under random strength" present a method so called chance constrained programming, an effective method of stochastic programming, to solve shakedown analysis problem under random condition of strength. In this our investigation, the loading is deterministic, the strength are distributed as normal or lognormal variables.
10p dathienlang1012 03-05-2024 1 0 Download
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Due to typical topographical-geological conditions for the coastal plain, this study area has a wide plain with many sandy areas and sand fields, which come from marine origin, with a large total amount. This paper showed conduct investigate the influence of fineness and salinity of marine sand to CCS made from marine sand as fine aggregate.
9p viellison 06-05-2024 3 1 Download
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Research on the effects of mDMDHEU concentration at 10, 20 and 30% on the finishing abilityby 4 types of paints: brown alkyd, PU, cerise Lasure classic and dark gray Lasure classic paints, and on the adhesive ability of Neolamarckia cadambawood to 2 types of glue: Epoxy and PVA in room conditions and after outdoor weathering in within 12 months.
10p vilarry 01-04-2024 5 1 Download
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The inverted pendulum on a cart is a challenging and widely studied control problem in the fields of control systems and robotics. To address the need for more effective control strategies, this article presents a novel approach that combines the strengths of two powerful control techniques: Linear-Quadratic Regulator (LQR) and Takagi-Sugeno (T-S) fuzzy control.
15p vibego 02-02-2024 3 1 Download
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In conclusion, the geotechnical properties of the unhydrated sand-mixed GBFS become more advantageous than those of natural sand. In addition, by mixing with natural sand, the hydration reaction rate and the solidification of GBFS are controlled. This means that it is possible to keep the compressive strength and the permeability at the predetermined conditions and, in turn, to satisfy requirements for the SCP method with LSRAR.
21p vialfrednobel 21-12-2023 3 2 Download
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This specification covers hot-wrought and cold-finished quenched and tempered alloy steel bars. Hot-wrought bars are available in three strength level classes designated BB, BC, and BD, and cold-finished bars in two strength level classes designated BB and BC. The bars are available in the conditions specified in 4.4 subject to the size limitations shown.
4p hth_hn_vn 10-12-2023 7 5 Download
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This specification covers carbon steel bars and shapes produced from standard rail steel. These bars are furnished in the as-wrought condition intended for structural use, or bar and shape uses, where high tensile properties are applicable. These materials are available in four strength levels as Grade 50, Grade 60, Grade 70, and Grade 80.
4p hth_hn_vn 10-12-2023 6 5 Download
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"Standard Test Method for Direct Current Magnetic Properties of Soft Magnetic Materials Using D-C Permeameters and the Point by Point (Ballistic) Test Methods" provides dc permeameter tests for the basic magnetic properties of soft magnetic materials in the form of bars, rods, wire, or strip specimens which may be cut, machined, or ground from cast, compacted, sintered, forged, extruded, rolled, or other fabricated materials.
11p hth_hn_vn 10-12-2023 9 4 Download
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This specification covers carbon steel castings for general applications that require up to 70 ksi (485 MPa) minimum tensile strength. Several grades and two classes of steel castings are covered, as indicated below. The grade and class desired shall be specified by the purchaser.
4p hth_hn_vn 10-12-2023 6 4 Download
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"Standard Specification for Cold-Drawn, Stress-Relieved Carbon Steel Bars Subject to Mechanical Property Requirements" covers two classes, nine grades, and four conditions of stress-relieved cold-drawn carbon steel bars produced to mechanical property requirements. One class, B, is cold drawn with higher than normal (heavy) drafts to provide higher strength levels, and four grades provide improved machinability.
4p hth_hn_vn 10-12-2023 7 6 Download
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This specification covers high-strength low-alloy structural steel shapes, plates, and bars for welded, riveted, or bolted construction but intended primarily for use in welded bridges and buildings where savings in weight or added durability are important. The atmospheric corrosion resistance of this steel in most environments is substantially better than that of carbon structural steels with or without copper addition (see Note 1). When properly exposed to the atmosphere, this steel is suitable for many applications in the bare (unpainted) condition.
3p hth_hn_vn 10-12-2023 7 5 Download
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This test method covers dc ballistic testing for the determination of basic magnetic properties of materials in the form of ring, toroidal, link, double-lapped Epstein cores, or other standard shapes which may be cut, stamped, machined, or ground from cast, compacted, sintered, forged, or rolled materials. It includes tests for normal induction and hysteresis taken under conditions of steep wavefront reversals of the direct-current magnetic field strength.
8p hth_hn_vn 10-12-2023 10 4 Download
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This specification covers three types and five strength grades of high-strength low-alloy, hot rolled structural steel plate for use in truck frames, brackets, crane booms, rail cars, and similar applications. Steels that conform to this specification offer improved formability. These steels are normally furnished in the as-rolled condition. The type and strength grade furnished is as agreed upon between the manufacturer and the purchaser. The types and strength grades are shown in the tables.
3p hth_hn_vn 10-12-2023 11 5 Download
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This specification covers iron-chromium-nickel-copper corrosion-resistant steel castings, capable of being strengthened by precipitation hardening heat treatment; These castings may be used in services requiring corrosion resistance and high strengths at temperatures up to 600°F [315°C]. They may be machined in the solution-annealed condition and subsequently precipitation hardened to the desired high-strength mechanical properties specified in Table S24.1 with little danger of cracking or distortion.
5p hth_hn_vn 10-12-2023 7 5 Download
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This specification covers 4 to 64-in. ductile iron gravity sewer pipe centrifugally cast with push-on joints. This specification may be used for pipe with other types of joints, as may be agreed upon at the time of purchase.
23p hth_hn_vn 10-12-2023 8 4 Download
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This specification covers carbon, low-alloy, highstrength low-alloy, and alloy steel hot-rolled floor plates for flooring, stairways, transportation equipment, and general structural purposes. While it is generally provided in the as-rolled condition, floor plate also may be provided in the heat-treated condition, depending on the material specification. Rolled floor plates have raised figures at regular intervals on one surface of the plate.
10p hth_hn_vn 10-12-2023 13 5 Download
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This test method provides a means for determination of the impedance permeability of ferromagnetic materials under the condition of sinusoidal current (sinusoidal H) excitation. Test specimens in the form of laminated toroidal cores, tape-wound toroidal cores, and link-type laminated cores having uniform cross sections and closed flux paths (no air gaps) are used. The method is intended as a means for determining the magnetic performance of ferromagnetic strip having a thickness less than or equal to 0.025 in. [0.635 mm].
4p hth_hn_vn 10-12-2023 13 4 Download
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This specification covers hot-rolled, high-strength lowalloy steel plate with improved notch toughness in the as-rolled condition. When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A 6/A 6M for information on weldability.
2p hth_hn_vn 10-12-2023 7 5 Download