CONSEQUENCES OF USING Q & T STEEL TO REDUCE WEIGHT AND INCREASE SERVICE LIFE OF RAILWAY FREIGHT CARS
It is shown that although the use of quenched and tempered steels can significantly reduce the structural weight of freight cars, the use of such material for this purpose will probably also drastically reduce the car's service life. The paper also concludes that, based upon recent research into the reasons for welded girder failure, the use of quenched and tempered steels for their highnotch toughness at low temperatures will not appreciably decrease and may, in fact, increase the incidence of fracture in freight car underframes. It is thus concluded that, as a general rule, the use of this and similar materials for the aforementioned purposes will yield only added expense to the owner of the car.
- For Meeting held December 10-15, 1978.
American Society of Mechanical EngineersTwo Park Avenue
New York, NY United States 10016-5990
- Garrett, M F
- Publication Date: 1978
- Pagination: 6 p.
- TRT Terms: Fracture mechanics; Freight cars; Light vehicles; Metal heating; Service life; Steel; Vehicle design; Vehicle frames
- Uncontrolled Terms: Heat treatment
- Old TRIS Terms: Car design; Freight car design; Underframes
- Subject Areas: Design; Railroads; Vehicles and Equipment;
- Accession Number: 00193761
- Record Type: Publication
- Source Agency: Engineering Index
- Report/Paper Numbers: n 78-WA/RT-18 Conf Paper
- Files: TRIS
- Created Date: May 26 1979 12:00AM