نتایج جستجو برای: three piece bogie 18 100

تعداد نتایج: 1917089  

2015
Jishan Li Jinhai Wang Xi Li Jianwei Yang Haitao Wang

In this paper, a problem for safety of bogie frame of subway vehicle under overload situation has been discussed. Firstly, the structure of bogie frame and service condition are introduced to explain the reason caused fatigue failure. Then, the testing points are selected in terms of the structure of bogie frame, the characteristics of processing technique, load transfer path and the operation ...

Journal: :E3S web of conferences 2023

Different optimal designs of bogie bolster for model 18-100 freight car are examined in the article. There is an analysis existing designs. Full-fledged fatigue tests by method specified GOST 32400-2013 carried out on stand designed dynamic strength tests. The values experimental studies were compared with calculated ones, maximum loads from 735 to 755 kN. best results observed at a load 745 kN...

1997
Azim Eskandarian Dhafer Marzougui Nabih E. Bedewi

Highway and roadside safety features are crash tested for compliance with certain safety criteria. US Federal Highway Administration (FHWA) uses a surrogate reusable test vehicle, Bogie, to conduct crash tests of roadside safety features. Bogie is intended to replace an impacting vehicle in order to reduce the cost of the test. Bogie can be configured with different crushable impact noses repre...

2013
J. Y. Zhu Z. W. Hu D. J. Thompson

As one of the main aerodynamic noise sources of high-speed trains, the bogie is a complex structure containing many components and the flow around it is extremely dynamic with high-level turbulence. Flow around a simplified bogie at scale 1:10 is studied numerically using Computational Fluid Dynamics (CFD) for comparison with experimental measurements. The upstream inlet flow is represented as ...

2008
Seung-Ho Han Je-Sung Bang Jai-Kyung Lee See-Yeob Song

For the fatigue design of a large scaled welded structure, the readily accessibility of various engineering tools is required for the static, fatigue, dynamic analysis and parametric study. In this paper, a multi-agent system is suggested for the development of distributed, open and intelligent design system. The developed design system is applied to assess cumulative fatigue damage on the weld...

Journal: :بینا 0
آزاده دوزنده a doozandeh ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranمرکز تحقیقات چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران محمدرضا جعفری نسب mr jafarinasab ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranمرکز تحقیقات چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران بهاره بهداد b behdad ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranمرکز تحقیقات چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران محمدعلی جوادی ma javadi ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranمرکز تحقیقات چشم- دانشگاه علوم پزشکی شهید بهشتی سپهر فیضی s feizi ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranمرکز تحقیقات چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران مهدی یاسری m yaseri دانشکده بهداشت و آمار- دانشگاه علوم پزشکی تهران

purpose: to compare the results of three-piece and one- piece hydrophobic acrylic posterior chamber intraocular lens (iol) with poly methyl metacrylate (pmma) iol implanted during lensectomy, posterior capsulotomy and anterior vitrectomy for congenital or developmental cataract. methods: this is a historical cohort study conducted on patients with congenital or developmental cataract who underw...

2016
Xiaojian Zhong Erping Long Wan Chen Wu Xiang Zhaochuan Liu Hui Chen Jingjing Chen Zhuoling Lin Haotian Lin Weirong Chen

BACKGROUND To compare the in-the-bag stability and visual function of single-piece intraocular lenses (IOLs) and three-piece IOLs. METHODS A total of 65 patients with age-related cataracts (80 eyes) were enrolled and randomly assigned to receive in-the-bag implantation of either a single-piece IOL (40 eyes) or a three-piece IOL (40 eyes). Follow-up visits were conducted at 1 week, 1 month and...

2012
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Extract from the Railway technical handbook, volume 1, chapter 2, page 24 to 41

Journal: :journal of dental biomaterials 0
s. raoofi department of periodontology, school of dentistry ,shiraz university of medical sciences, shiraz, iran. z. behboud department of periodontology, school of dentistry ,shiraz university of medical sciences, shiraz, iran.

statement of problem: thermal injury during dental implant placement and restoration is a clinical concern as it may cause bone damage and compromise osseointegration. the threshold level for heat-induced cortical bone necrosis is 47°c for 60 seconds. objectives: to measure the amount of heat transferred to the implant-bone interface when a two-piece or one-piece abutment was prepared in vertic...

2004
R Nejima K Miyata M Honbou T Tokunaga T Tanabe M Sato T Oshika

Aims: To compare the postoperative performance of single and three piece acrylic foldable intraocular lenses (IOLs). Methods: 20 patients underwent bilateral cataract surgery with a single piece SA30AL IOL in one eye and a three piece MA30BA IOL in the other eye. The eyes were randomly assigned to either a single or three piece lens. The amount of IOL decentration and tilt, area of anterior cap...

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