نتایج جستجو برای: wheel lifetime

تعداد نتایج: 69236  

معلمی اوره , عباس , کارپرور فرد, سید حسین ,

  This study was undertaken to investigate the effects of soil compaction due to wheel traffic on corn growth and yield, in summer 2004 and 2005 at the Badjgah Research Station, Shiraz University located in North West of Shiraz, Iran. The treatments consisted of axial load in two levels and wheel traffic location treatments at four levels, including none, between rows, on rows and on entire plo...

2012
Yoshihiro Takita Hisashi Date Shinya Ohkawa

This paper proposes SSM(Sensor Steering Mechanism) for lateral guided vehicle with rear wheel steering mechanism. Authors demonstrated the geometry of SSM for the front wheel steer type and the reverse phase four-wheel steer type one. SSM presents a stable lateral guiding performance for automated vehicle which follows a straight and curved path created by guideway. The other hand, SSM is not e...

One of the main components of pavement management system (PMS) is pavement evaluation. Several indices have been defined for the evaluation of existing pavement. The Pavement Condition Index (PCI) is a common index used for pavement evaluation. In order to calculate PCI, a significant volume of condition data -based on distress surveying- is required. The objective of this research is to reduce...

ژورنال: Journal of Railway Research 2021

Wheel-rail interaction has always been one of the issues in the railway industry. In this paper, the effect of Hertzian and non-Hertzian contact theories on the wheel wear due to the rail inclination was investigated. by using the UM software. According to the results, longer contact areas are obtained in non- Hertzian contact theory compared to Hertzian contact theory. In non-Hertzian contact...

2010

Numerous cases of failures of different aircraft components and parts with abundant data and in-depth analysis of causes, development and manifestation of failures can be found in the literature 1-4 . The check-up of the integrity of aircraft components is carried out by trained and competent personnel. The regular inspection of particular components is scheduled depending on the number of flyi...

Journal: :Energies 2022

The impeller under consideration is a rotor wheel of centrifugal compressor, made 17-4PH martensitic precipitated hardening stainless steel. Its total operating lifetime was estimated to 80,000 h, but it fractured beforehand, 4 days after the scheduled overhaul without any observed pre-symptoms. important causes failure were its working conditions: moist H2S environment, applied shaft fitting s...

Journal: :Biological research 2005
Adrián Ocampo-Garcés Felipe Hernández Wilson Mena Adrián G Palacios

Wheel-running and other non-photic stimuli influence the rest-activity pattern of diurnal and nocturnal mammals. A day to night inversion of phase preference of activity was described among Octodon degus, when exposed to ad-libitum wheel running. We have studied the rest-activity pattern response in presence of ad libitum wheel-running in wild-captured male individuals from two species of genus...

Journal: :Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology 2015
Zacharias Mandalenakis Lotta Von Koch Henry Eriksson Mikael Dellborg Kenneth Caidahl Lennart Welin Annika Rosengren Per-Olof Hansson

AIM This study aimed to estimate the prevalence, incidence rate, and lifetime risk of developing atrial fibrillation (AF) in a population-based study of Swedish men. METHODS AND RESULTS The study is a part of 'The Study of Men Born in 1913', which is a longitudinal prospective cohort study of 855 men born in 1913 and living in the city of Gothenburg in Sweden. They were followed from the age ...

2005
R. John Robertson Jane Barton John Robertson

The different purposes present within a distributed information environment create the potential for repositories to enhance their metadata by capitalising on the diversity of metadata available for any given object. This paper presents three conceptual reference models required to achieve this optimisation of metadata workflow: the ecology of repositories, the object lifecycle model, and the m...

Journal: :Robotica 2017
S. Avinash Suril V. Shah K. Madhava Krishna

This paper discusses the development of an optimal wheel torque controller for a compliant modular robot. The wheel actuators are the only actively controllable elements in this robot. For this type of robots, wheel-slip could offer a lot of hindrance while traversing on uneven terrains. Therefore, an effective wheel-torque controller is desired that will also improve the wheel-odometry and min...

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