نتایج جستجو برای: standard axle load

تعداد نتایج: 657952  

Journal: :International journal of GEOMATE : geotechnique, construction materials and environment 2021

Overloaded vehicles is one of the main problemsthat cause premature failure in road infrastructure. This paper presents an analysis overloaded vehicles'effect on flexible pavement based historical weigh-in-motion data. Thisarticle highlights potential use (WIM) data design by addressing overload, percentage overloading, and axle load distribution. The can reach more than 80% total number trucks...

2011
Kirk T. McDonald Joseph Henry

The discovery/invention of the ball-bearing motor is attributed to Milroy [1]. It has been discussed several times, with conflicting explanations [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]. This solution is a much simplified version of that given in [7]. Because the motor is weak, it is helpful to reduce friction on the axle by connecting the high-current lead to the outer races of the ba...

Journal: :Orthopaedics & traumatology, surgery & research : OTSR 2014
T T Pham N Bonnevialle M Rongières P Bonnevialle P Mansat

Semiconstrained (linked design) total elbow arthroplasty is indicated in a wide variety of cases. Long-term survival is better than with non-linked prostheses. However, mechanical failure of the hinge mechanism is a complication that may occur during follow-up. We report a case of failure of the axle assembly of a Coonrad-Morrey elbow prosthesis 8 years after implantation for nonunion of a supr...

2003
Roy Merrell Mark A. Minor

A sensor fusion algorithm for flexible framed modular mobile robots is presented in this paper. This algorithm uses traditional Kalman filters and rigid axle kinematic models to predict the global posture of each axle. A Covariance Intersection filter is then proposed for fusing these axle modules using data provided by the compliant frame module. Modeling and instrumentation of the compliant f...

Journal: :Chemical communications 2014
Richard C Knighton Paul D Beer

A neutral heteroditopic pyridine N-oxide axle containing [2]rotaxane, synthesised via sodium cation templation, displays cooperative recognition of alkali metal cation-halide anion ion-pairs in an unprecedented axle component separated ion-pair binding fashion.

ژورنال: Journal of Railway Research 2021
GEBRE, ABRHAM , KASSA, ELIAS, NTAKIYEMUNGU , MATHIEU,

There are several factors causing fastening systems to deteriorate faster than the designed life. The high repetitive loads from a moving train being one of the main factors, track irregularities, design and installation defects of track components, non-uniform rail support stiffness, unevenness in the rail seat deterioration are some of the factors causing fastenings systems to deteriorate fas...

Journal: :civil engineering infrastructures journal 0
javad sadeghi centre of excellence in railway transportation, school of railway engineering, iran university of science and technology, tehran, iran araz hasheminezhad research assistant, school of railway engineering, iran university of science and technology, tehran, iran mohammad essmayil kaboli m.sc. student, school of railway engineering, iran university of science and technology, tehran, iran

the main design criteria of ballasted railway tracks include rail deflections, rail bending stresses, rail wheel contact stresses, sleeper bending moments and ballast sleeper contact pressures. numerous criteria have been defined for the design of ballasted railway tracks owing to the various mechanical properties of track components and their complex interaction. therefore, railway track desig...

Journal: :International Journal of Materials Science and Applications 2023

The high temperature performance of asphalt mixture is an important factor to determine pavement life. Through rut test, dynamic modulus test and repeated load creep the high-temperature properties two kinds SMA mixtures were compared by different indexes, characteristics non-fiber evaluated. stability slope curve showed that had advantage in development rate with ordinary SMA. estimated road l...

Journal: :Physiology & behavior 1974
A L Porterfield J J Stern

A simple method for studying operant wheel running in rats. The present report describes an operant running device for rats. The apparatus makes use of an activity wheel driven by a small electric motor. The motor is started by a bar press; once activated, the wheel turns for 3-30 sec. depending on the setting of a timing device. The system is well suited to long term studies of activity patter...

2013
Roy D. Sleator

1 describes the design, synthesis and operation of an artificial small-molecule capable of synthesizing peptides in a sequence-specific manner. The design of this artificial molecular machine was, in the author's own words, " inspired by the ribosome " ; 2 with several elements analogous to ribosomal protein synthesis (Fig. 1). The tRNA's of conventional translation are substituted by amino aci...

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