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  • Rail corrugation and acoustic roughness analyser vehicle

    RailMeasurement’s RCA measures irregularities, in particular rail corrugation, from a vehicle. The RCA was initially designed for use on grinding trains at typical speeds of 3-15km/h. More recently versions of the RCA have been made to work over the speed range of 0.5km/h (on a milling train) to 50km/h (on a hi-rail vehicle, where the ...

  • Rail irregularities, corrugation and acoustic ... - Rail ...

    Spectral peaks from grinding have been noted elsewhere.36,40 The generally low level of irregularities except at longer wavelengths is doubtless a consequence of low traffic speeds, so that so-called ‘pinned–pinned resonance’ corrugation,41 for example, would be eliminated by contact patch filtering.

  • Rail irregularities, corrugation and acoustic roughness ...

    2019-11-3  Rail irregularities, corrugation and acoustic roughness: characteristics, significance and effects of reprofiling Stuart L Grassie Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Transit 2012 226 : 5 , 542-557

  • Rail irregularities, corrugation and J Rail and ...

    Rail irregularities, corrugation and acoustic roughness: characteristics, ... Irregularities to the ISO 3095 limit spectrum exist immediately after some forms of grinding. The best results are

  • grinding corrugation removed 」

    The benefits of rail grinding to remove rail corrugation produced by months of train use can be negated if the grinding . Inquire Now; Rail InsiderRail grinding: Seven suppliers talk Excessive grinding can reduce rail life, so it's very important to remove only the metal that needs to be removed, he added. As a grinding program "enters the ...

  • Paper 438 - Acoustic rail grinding - measures of long

    2014-12-1  An acoustic grinding method was developed to address the GIC following a period of research and development. Field trials of different grinding techniques were undertaken at a number of locations around the network and inside the tunnels, which then led to the creation of a High Speed Grinding Strategy for ECRL.

  • Why measure corrugation and acoustic roughness?

    Corrugation and acoustic roughness RailMeasurement equipment is used to measure corrugation and acoustic roughness, mainly on rails but also (with the TriTops) on wheels. Corrugation increases track maintenance because of the vibration that results from it.

  • (PDF) Rail irregularities, corrugation and acoustic ...

    Railways, railway noise, acoustic roughness, rail corrugation, roughness measurement, gr ound-borne noise Date received: 14 November 2011; accepted: 6 March 2012 Introduction

  • Refining Approaches to Corrective and Preventive Rail

    Acoustic data is also proving to be a useful variable in identifying the presence of corrugation and the effectiveness of grinding programs to remove it. The Bay Area Transit (BART) system is a pioneer in using acoustic data to guide its corrective grinding program.

  • Rail Insider-Rail grinding technology update 2019 ...

    2019-7-9  Rail grinding is an integral tool in a railroad’s maintenance-of-way toolbox. It can help minimize potential for derailments and extend rail life. And freight railroads continue to set aside a ...

  • Rail irregularities, corrugation and J Rail and ...

    Rail irregularities, corrugation and acoustic roughness: characteristics, ... Irregularities to the ISO 3095 limit spectrum exist immediately after some forms of grinding. The best results are

  • Development and validation of a rail surface analyser for ...

    2007-12-17  importance of high quality grinding was stressed to avoid immediate reappearance of corrugation. It is suggested to measure rail roughness immediately after grinding to verify the quality of the grinding process. This paper describes the development of a portable, accurate and easy-to-use instrument to measure corrugation and rail roughness.

  • Rail Insider-Rail grinding technology update 2019 ...

    2019-7-9  Rail grinding is an integral tool in a railroad’s maintenance-of-way toolbox. It can help minimize potential for derailments and extend rail life. And freight railroads continue to set aside a ...

  • Accueil - Speno International – au service du rail dans le ...

    2018-2-22  Acoustic grinding Acoustic grinding aims at combating noise due to corrugation. Corrugated rail surfaces lead to an increase in noise during the passage of trains of up to 10 dB(A). If the corrugation depth exceeds 0.03 mm, noise starts to increase. Several railways have set up particular strategies to deal with noise-sensitive areas.

  • acoustic grinding machine - Villa Marina

    SBS is a world leader in grinding wheel balancing and process monitoring for the grinding industry. Whether your grinding application is sophisticated or basic, SBS dynamic balancing systems and acoustic emission monitoring solutions help you control the grinding process to improve part quality and increase productivity, thereby saving you time and money.

  • 曲线钢轨波磨打磨方法

    2018-12-31  在研究地铁波磨成因机理基础上,调研分析了现有打磨手段特点和局限性,提出了一种新型的简易打磨方法,实现了更精准和有效的快速打磨.研制了自动化便携式多轮组打磨装置,在地铁线路上进行了打磨试验,并对地铁线路曲线钢轨波磨区段进行了添乘车厢振动和噪声测试以及波磨数据的精确 ...

  • Modelling the effect of rail dampers on wheel–rail ...

    Special acoustic grinding programmes have been introduced on some railways specifically to control rolling noise. Rail dampers are also used to reduce rolling noise; this paper studies rail damping as a possible mechanism to slow the rate of development of roughness on the surface of rails. ... Corrugation has several forms and causes , of ...

  • High Speed Grinding - vossloh - EPA Tur

    Acoustic Grinding Acoustic grinding keeps the rail surface smooth and reduces corrugation. Acoustic grinding with HSG means: Reduced noise levels through periodic rail care Minimisation of corrugation and slip waves Cost effective, traffic friendly and environmentally friendly.

  • Effect of Rail Grinding on Rail Vibration Groundborne ...

    2009-11-19  corrugation was considered a possible cause of increased groundborne noise levels. As a result, rail grinding was conducted during October 2003. This paper presents results of detailed measurements conducted during this process, highlighting the effect of rail condition on groundborne noise levels. Site Details Figure 1 shows the design of the ...

  • 城市轨道交通钢轨的高速维护_图文_百度文库

    2018-7-27  HSG can remove the corrugation effectively 高速打磨可以有效去除波磨 32 Grinding Results ( Corrugation and Head Check removal etc. ) 打磨结果(首先去除波峰,逐步接触到波谷) Corrugation removal in several passes 经过几次打磨作业后去除波磨 1 2 3 33 4

  • acoustic grinding machine - Villa Marina

    SBS is a world leader in grinding wheel balancing and process monitoring for the grinding industry. Whether your grinding application is sophisticated or basic, SBS dynamic balancing systems and acoustic emission monitoring solutions help you control the grinding process to improve part quality and increase productivity, thereby saving you time and money.

  • Rail irregularities, corrugation and acoustic roughness ...

    Rail irregularities, corrugation and acoustic roughness: characteristics, significance and effects of reprofiling. Railway noise is excited by irregularities on the running surfaces of wheels and rails, with rails being more significant for most of the wavelength and frequency range of interest.

  • Acoustic Monitoring of Rail-Head Roughness for

    Acoustic Monitoring of Rail-Head Roughness for Targeted Grinding and Noise Modelling ... It is therefore possible to monitor the level of rail-head roughness, and especially short-wavelength corrugation, by measuring the rolling noise with a microphone mounted on

  • Development and validation of a rail surface analyser for ...

    2007-12-17  importance of high quality grinding was stressed to avoid immediate reappearance of corrugation. It is suggested to measure rail roughness immediately after grinding to verify the quality of the grinding process. This paper describes the development of a portable, accurate and easy-to-use instrument to measure corrugation and rail roughness.

  • acoustic qualities of grinding machines - Straffe Artist

    Mechanical and thermal behaviours of grinding acoustic . Mechanical and thermal behaviours of grinding acoustic emission 187 AE sensor was used to detect the AE signals The sampling rate was 2 MHz. A member of the UNITED GRINDING Group KRONOS M. The basis of the KRONOS M centerless external cylindrical grinding machine is the Granitan® machine ...

  • DIN EN 15610-2009 轨道交通.噪声排放.关于转动噪声产生的 ...

    2019-9-26  rail grinding operations, except for those where the acoustic roughness (and not the level of corrugation) is an established approval criterion; e) characterization of track geometry. Testing and approval of measuring apparatus are not part of the ...

  • Groover Grinder - Lissmac GmbH

    Grinding Surface grinding serves to produce a well-defined roughness to guarantee optimum road grip for vehicles. Another application of the process is acoustic grinding. This involves selecting a cutting shaft which will yield a corrugation pattern to help reduce road noise.

  • Wilson Ho - Founder and Principal Director - Wilson ...

    The corrugation growth rate reduction by rail damper in four grinding cycles and the overall noise reduction are shown. Taking into account of the suppression of corrugation growth, WAL damper provides up to 6dB(A) noise reduction comparing to adjacent control section in the same curve track without the installation of WAL dampers.

  • Rail Dampers, Acoustic Rail Grinding, Low Height Noise ...

    2015-6-4  Rail grinding: Only two countries – Germany and The Netherlands – have implemented acoustic rail grinding proce-dures. In Germany the procedure allows a legal noise reduction of 3 dB, regardless if this is achieved in practice or not while in The

  • High Speed Grinding - vossloh - EPA Tur

    Acoustic Grinding Acoustic grinding keeps the rail surface smooth and reduces corrugation. Acoustic grinding with HSG means: Reduced noise levels through periodic rail care Minimisation of corrugation and slip waves Cost effective, traffic friendly and environmentally friendly.

  • Wilson Ho - Founder and Principal Director - Wilson ...

    The corrugation growth rate reduction by rail damper in four grinding cycles and the overall noise reduction are shown. Taking into account of the suppression of corrugation growth, WAL damper provides up to 6dB(A) noise reduction comparing to adjacent control section in the same curve track without the installation of WAL dampers.

  • Groover Grinder - Lissmac GmbH

    Grinding Surface grinding serves to produce a well-defined roughness to guarantee optimum road grip for vehicles. Another application of the process is acoustic grinding. This involves selecting a cutting shaft which will yield a corrugation pattern to help reduce road noise.

  • Noise and vibration control by rail dampers: The

    2019-3-19  MTR Corporation and Wilson Acoustic Limited launched a project to investigate the effect of rail dampers on noise reduction and rail corrugation growth in an operational metro railway at a 300m radius curved track. Corrugation was measured by Corrugation Analysis Trolley (CAT) every month throughout a 6-month grinding cycle. Corrugation of wavelength 50-80mm was observed at the low rail ...

  • acoustic qualities of grinding machines - Straffe Artist

    Mechanical and thermal behaviours of grinding acoustic . Mechanical and thermal behaviours of grinding acoustic emission 187 AE sensor was used to detect the AE signals The sampling rate was 2 MHz. A member of the UNITED GRINDING Group KRONOS M. The basis of the KRONOS M centerless external cylindrical grinding machine is the Granitan® machine ...

  • Speno International

    2018-2-22  "Acoustic" grinding experiment The period during which no preventive rail grinding had been carried out not only led to widespread rail corrugation (by 1998, as much as 450 km of rail required grinding), but also to an increase in the number of complaints concerning wayside noise levels. Corrugated rails can cause an increase in noise of 3-5 dB.

  • EUROPA - Wheel rail corrugation in urban transport ...

    2020-6-14  Corrugation is an annoying and costly phenomenon that reduces the lifetime of both wheels and rails, causes an irritating emitted rolling noise and leads to safety concerns.Up till now, No real cure exists and the only available solution is grinding the rails, which is a costly and recurring process.

  • 12th International Workshop on Railway Noise,

    The workshop will follow the traditional format, with a single technical session accompanied by a small technical exhibition area. There are no parallel sessions so the workshop format allows for comprehensive discussions of all topics.

  • Effect of Diamond Grinding on Pervious Concrete

    It was evident that whereas grinding improved ride quality in pervious concrete, it provided only marginal acoustic benefit in sound absorption and On Board Sound Intensity. The lemma of improvement in acoustic properties of porous surfaces due to corrugation was validated in the deteriorated pervious surface and only marginally in the non ...

  • Rail Transit: Addressing Wheel/Rail Noise at the

    In North America, where corrugation is the dominant cause of rolling noise, transit systems rely on the use of premium rail steels, better matched wheel/rail profile designs, lubrication / top-of-rail friction management, which is used to reduce wheel squeal and slow the onset of corrugation, and, ultimately, rail grinding (or milling), the standard remedial approach to removing corrugation ...

  • Rail Insider-Rail grinding: Seven suppliers talk ...

    2015-2-18  Suited for scale removal, corrugation and rail corner grinding, the V2R-850-EMV-8T rail grinding truck can grind standard or girder rail, and features an integrated dust-collection system.