The flexible structure of the new type aerial track studied in this paper is formed by strings and tracks, which have obvious dynamic characteristics under action vehicle moving loads also an important factor affecting its performance. uses full-scale model AERORail, based on modal test a specific span, combined with fundamental frequency analysis structure, carries out load to determine change...

Metal powder 3D printing technology is gaining popularity due to the possibility of producing structural elements complex geometry, which production with methods used so far difficult or impossible obtain. An example a material in parts by additive method 316L steel, bone support screws, surgical tools and needles, other industries for exhaust manifolds, furnaces heat exchangers. The study inve...

This paper proposes a load test method for high-frequency transformers using two power supplies. In this method, the supplies need to supply only losses of transformer because is circulated between primary and secondary sides. Hence, can be performed on with capacity higher than that without requiring load. The experimental results show applied under 100 kHz sinusoidal voltage/current 50 VA/uni...

PURPOSE The purpose of this study was to evaluate the biomechanical properties of a new anatomical locking metal block plate by comparing the initial biomechanical stability of three different fixation constructs for open wedge high tibial osteotomy (HTO). MATERIALS AND METHODS Sawbones composite tibiae were used to make a 10-mm opening osteotomy model with uniplane technique. The osteotomy w...

To improve the response time of a web server, an obvious approach is to have multiple servers. Effectiveness of a replicated web server system will depend on how the incoming requests are distributed among these replicas. A large number of load balancing schemes for web server systems have been proposed in the literature. In this paper we describe a test-bed that can be used to evaluate the per...

Standards-referenced educational reform has increased the prevalence of standardized testing; however, whether these tests accurately measure students' competencies has been questioned. This may be due to domain-specific assessments placing a differing domain-general cognitive load on test-takers. To investigate this possibility, functional magnetic resonance imaging (fMRI) was used to identify...

in this paper, full scale load test of a horizontally curved steel box-girder bridge is carried out in order to detect structural defects, which reportedly result in unwanted vibrations in nearby buildings. the bridge is tested under the passage of six heavy vehicles at different speeds, so as to determine its static and dynamic responses. a total number of one hundred and two (102) sensors are...

I n the burn-in test of three-phase on-line unintermptible power supply(UPS) system, R. L. C. is usually used as a load in conventional method. For saving energy and decreasing the test cost of UPS, the energy feedback method is proposed to apply the test o f the on-line UPS. In this method, the utility system is used instead of a load. A voltage regulator is used in parallel operation to turn ...

With the expanding demand on application of magnesium alloys in automotive and aerospace industries, robust methods in fatigue characterization of commercially available magnesium alloys with high specific strength is anticipated. In this paper, rotating bending load controlled tests has been studied on specimens machined from an extrusion piece of AZ31B. Due to asymmetric and anisotropic behav...