{"title":"Acoustic wayside identification of freight car roller bearing defects","authors":"J. Cline, J. Bilodeau, R.L. Smith","doi":"10.1109/RRCON.1998.668083","DOIUrl":"https://doi.org/10.1109/RRCON.1998.668083","url":null,"abstract":"Over the past few years, the Association of American Railroads (AAR) has developed several new techniques for detecting defective roller bearings as part of their new generation wayside acoustic detector program. This paper reviews some of the wayside acoustic data collected from a simulated revenue service test train containing 18 known defective bearings. All performance testing was done November 1996 by Transportation Technology Center Inc. (TTCI), a subsidiary of the AAR, at the Transportation Technology Center (TTC), Pueblo, Colorado. This document presents the character of the collected acoustic data from the defective bearings as they operated under full service conditions. Time-based and spectral tracings are displayed, demonstrating that defective bearing conditions can be identified on-the-fly from wayside microphones. The examined data is the foundation of the development, manufacture and installation of a new online acoustic wayside detection system.","PeriodicalId":257470,"journal":{"name":"Proceedings of the 1998 ASME/IEEE Joint Railroad Conference","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124072441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Passenger Rail Equipment Safety Standards (PRESS)","authors":"T. Peacock","doi":"10.1109/RRCON.1998.668087","DOIUrl":"https://doi.org/10.1109/RRCON.1998.668087","url":null,"abstract":"The American Public Transit Association (APTA) recognizes that, for many years, formal safety standards specific to the rail passenger industry have not been maintained by either the Federal government or the rail passenger industry. To help fill this void, APTA passenger railroad members elected to take on the responsibility for developing and maintaining passenger rail equipment safety standards. Commuter railroads and Amtrak collectively budgeted $1.2 million to fund the Passenger Rail Equipment Safety Standards (PRESS) Task Force to develop industry safety standards for passenger rail equipment. More than 100 people representing passenger railroads, equipment builders and suppliers, labor organizations, government agencies and consultants to the rail industry are participating in the PRESS effort. The Task Force organized itself into committees that identified a need for over 60 safety standards and recommended practices pertaining to railroad passenger equipment. Approximately one half of these documents have been completed, the remainder are in-process. They will be adopted and compiled in the first edition of APTA's Manual of Passenger Equipment Safety Standards and Recommended Practices to be published in the first quarter of 1999.","PeriodicalId":257470,"journal":{"name":"Proceedings of the 1998 ASME/IEEE Joint Railroad Conference","volume":"AES-9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126517497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}