trends of rolling bearing performance and recent results

We publish scientific and engineering peer

The second volume of the topic series "Superalloys" contains articles published by Trans Tech Publications from 2018 up to 2019 This collection presents a wide range of scientific research results and engineering solutions in the field of alloy developments and performance physical and mechanical properties and processing technologies of various types of superalloys

Bearing fault diagnosis based on variational mode

2016-5-13Rolling element bearings are widely applied in rotating machinery and play an important role in modern manufacturing industries The failure of rolling element bearings results in the deterioration of machine performance it is thus necessary to accurately detect faults in the bearings [1 2] Vibration signal analysis is the most commonly used approach due to its easy measurement and high

Crest Nicholson Holdings plc Half Year Results 2020

Crest Nicholson Holdings plc (Crest Nicholson the Group or the Company) today announces its interim results for the six months ended 30 April 2020 Commenting on today's results Peter Truscott Chief Executive of Crest Nicholson said: Despite a difficult first half performance we have made excellent progress implementing our updated

Research Article Bearing Performance Degradation

2019-7-30nance (CBM) they cannot reveal the degenerative trends of bearings Giventhisproblem bearingperformancedegrada-tion assessment has been a subject of extensive research in recent years and more and more attention has been received for its bene ts in implementing CBM strategies [] Generally speaking performance degradation assess-

In search of art: rapid estimates of gallery and

To verify that Google Trends data for control topics does not improve estimates of visitor numbers we investigate the performance of both ARIMA and NNAR models We again build a regression model of the mean absolute scaled errors using a gamma distribution a logarithmic link function and robust standard errors with the model museum month and training window as predictors

KXL X

2019-5-24If the load rating of a spherical roller bearing from back in 1932 is assumed to be the value achieved by a Schaeffler spherical roller bearing manufactured in 2012 is 80% higher The load rating of tapered roller bearings has tripled since 1931 and that of needle roller bearings has more than doubled since 1950

The Role of Sector and Country in Stock Returns

Analysis To answer these questions we attribute stock returns to sector and country "factors" We use the constituents of the MSCI World Index from January 1990 to November 2015 with the underlying sector and country indices representing our factors As an example to measure country and sector contributions to the returns of Google we use the MSCI USA Index and the MSCI Information

CALCULATED AND EXPERIMENTAL DATA FOR A 118

2013-8-31Use of CYBEAN to predict bearing performance requires as input 311 esti- mate of the volume percent of the bearing cavity titat is occupied by the lubricant The bearing cavity is detined as the space between the Inner- and outer-races that is not occupied by the cage or the rolling elements

Association Rule

Effective and efficient diagnosis methods are highly demanded to improve system reliability Comparing with conventional fault diagnosis methods taking a forward approach (e g feature extraction feature selection and fusion and then fault diagnosis) this paper presents a new association rule mining method which provides an inverse approach unearthing the underlying relation between

How to evaluate fan life

2020-8-19In situations where fan reliability is critical it is a good idea to limitthe bearing temperature rise to 10C This rule of thumb should generallybe applied when a single fan failure results in a system shut-down The Booser life estimate can also be significantly affected by the bearingload and the bearing

Top trends in academic libraries: A review of the

While performance-based funding is nothing new many have identified its resurgence in several states as a trend in higher education and new models have earned the term "Performance Funding 2 0 " 29 Numerous initiatives related to educational access and student success such as Achieving the Dream 30 and its Developmental Education

Most Downloaded Tribology International Articles

2020-8-18CiteScore: 7 9 ℹ CiteScore: 2019: 7 9 CiteScore measures the average citations received per peer-reviewed document published in this title CiteScore values are based on citation counts in a range of four years (e g 2016-2019) to peer-reviewed documents (articles reviews conference papers data papers and book chapters) published in the same four calendar years divided by the number of

Load effect on the vibration characteristics of a stage

This paper aims to investigate the dynamic characteristics of a loading stage with a rolling guide In practice the rolling guide is designed with different contact geometries to withstand various loads in service it forms a rolling interface with contact stiffness varying with the applied loads To model the rolling contact mode realistically different contact modes were assumed at the

The QIBR high

2020-8-19The wind turbines impact rolling bearing technology The need to increase power density and reliability particularly in wind turbines has driven a number of developments in the bearing seal lubrication and condition monitoring industries From a bearing standpoint high-capacity cylindrical roller bearings have found their application here

Journalism Media and Technology Trends and

2 This year's report reveals new insights about digital news consumption based on a YouGov survey of over 75 000 online news consumers in 38 countries including South Africa for the first time The report focuses on the progress on new paid online business models trust and misinformation the impact of populism the shift to private messaging apps and the rise of podcasts

NASA Technical Reports Server (NTRS)

2013-8-27Rolling Bearing Life Prediction Theory and Application A tutorial is presented outlining the evolution theory and application of rolling-element bearing life prediction from that of A Palmgren 1924 W Weibull 1939 G Lundberg and A Palmgren 1947 and 1952 E Ioannides and T Harris 1985 and E Zaretsky 1987 Comparisons are made between these life models

We publish scientific and engineering peer

The second volume of the topic series "Superalloys" contains articles published by Trans Tech Publications from 2018 up to 2019 This collection presents a wide range of scientific research results and engineering solutions in the field of alloy developments and performance physical and mechanical properties and processing technologies of various types of superalloys

Trends and Future Views on Rolling Bearing Technology

2007-10-4Key Words: automotive bearing industrial bearing trend bearing technology Trends and Future Views on Rolling Bearing Technology 1 Introduction In recent years atmosphere surrounding technology development has increasingly diversified e g needs for unique and creative new product development development of world-class high quality products

Crest Nicholson Holdings plc Half Year Results 2020

Crest Nicholson Holdings plc (Crest Nicholson the Group or the Company) today announces its interim results for the six months ended 30 April 2020 Commenting on today's results Peter Truscott Chief Executive of Crest Nicholson said: Despite a difficult first half performance we have made excellent progress implementing our updated

A comprehensive review of artificial intelligence

2019-5-16The objective of this paper is to present a comprehensive review of the contemporary techniques for fault detection diagnosis and prognosis of rolling element bearings (REBs) Data-driven approaches as opposed to model-based approaches are gaining in popularity due to the availability of low-cost sensors and big data This paper first reviews the fundamentals of prognostics and health

Spherical Roller Bearings Market

The results when implemented have shown tangible benefits to business stakeholders and industry entities to boost their performance The results are tailored to fit the individual strategic framework The study also illustrates some of the recent case studies on solving various problems by companies they faced in their consolidation journey 4

Technical Journal

Microstructural Development in Bearing Steel during Rolling Contact Fatigue Improvements of Half Toroidal CVT * Development of World's Thinnest Drawn-Cup Needle Roller Bearings with Seal Ring —The Need for Improved Fuel Economy and the Application of Needle Roller Bearings Technological Trends in Linear Motion Rolling Guides for Machine Tools

Rolling Bearing Lubrication Technology Trends and RD

2007-10-4results for environmentally friendly biodegradable grease and the development of polymer lubricants are also described in detail in this report 2 Roles of Lubrication and Lubrication Technology in Rolling Bearing In order that a rolling bearing performs satisfactorily it is important to select proper lubricants and lubrication methods

A comprehensive review of artificial intelligence

2019-5-16The objective of this paper is to present a comprehensive review of the contemporary techniques for fault detection diagnosis and prognosis of rolling element bearings (REBs) Data-driven approaches as opposed to model-based approaches are gaining in popularity due to the availability of low-cost sensors and big data This paper first reviews the fundamentals of prognostics and health