منابع مشابه
An Ultrasonic technology Study for Subsurface Defect in Railway Wheel Tread
The subsurface defect in the wheel tread caused from Rolling Stock Fatigue (RCF) has become more danger in high speed railway. The conventional UT and phased array UT have deficiency to find the subsurface defect from the tread surface because of limitation of ultrasonic near field. In this paper, the subsurface defect is studied by simulation and experimental results with ultrasonic technique....
متن کاملAn Ultrasonic technology Study for the Subsurface Defect in Railway Wheel Tread
The subsurface defect in the wheel tread caused from Rolling Stock Fatigue (RCF) has become more danger in high speed railway. The conventional UT and phased array UT have deficiency to find the subsurface defect from the tread surface because of limitation of ultrasonic near field. In this paper, the subsurface defect is studied by simulation and experimental results with ultrasonic technique....
متن کاملThe Analysis of Wheel Loader Diesel Engine Crankshaft Failure
The main purpose of this study is to review the cause for the crankshaft failure of six-cylinder diesel engine of a wheel loader after passing a short period of time. The failure had occurred after 4800 hours of in-service in the fifth crankpin of the crankshaft. Hardness and tensile tests were carried out to study their mechanical properties. Spectrophotometer machine was used to examine the c...
متن کاملH-forming sets in graphs
For graphs G and H , a set S ⊆ V (G) is an H -forming set of G if for every v∈V (G) − S, there exists a subset R ⊆ S, where |R|= |V (H)| − 1, such that the subgraph induced by R∪{v} contains H as a subgraph (not necessarily induced). The minimum cardinality of an H -forming set of G is the H -forming number {H}(G). The H -forming number of G is a generalization of the domination number (G) beca...
متن کاملanalysis of forming parameters in sheet hydro-forming process
the aim of this paper is to develop a systematic method to analyze the effects of forming parameters on the quality of part formability and determine the optimal combination of the forming parameters for the sheet hydroforming process. in this paper, the effects of four important process parameters namely fluid pressure, friction coefficient at blank/punch interface, gap between die rim block a...
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ژورنال
عنوان ژورنال: Transport Problems
سال: 2017
ISSN: 1896-0596,2300-861X
DOI: 10.20858/tp.2017.12.3.3