STEEL WHEEL PLATE CRACKING

This document describes the results of an investigation into the cause of premature cracking on 28-inch reversed dish transit car wheels. Methods used in determining the operating thermal and track load stresses in the critical areas of a wheel are presented. The observations made on the cracked specimens all indicate that the cracks which formed were due to fatigue. The problem was resolved by specifying a new wheel plate thickness and also by machining and shot peening the plate surface.

• Corporate Authors:

  Transit Development Corporation, Incorporated

  1730 M Street, NW, Suite 911
  Washington, DC  United States  20036
• Authors:
  • Yontar, M
• Publication Date: 1974-6

Media Info

• Pagination: 10 p.

Subject/Index Terms

• TRT Terms: Cracking; Defects; Dynamic braking; Fracture mechanics; Machining; Mechanical fatigue; Peening; Pellets; Public transit; Railroad cars; Rapid transit; Rapid transit cars; Steel plates; Stress relieving; Stresses; Thermal degradation; Thermal stresses; Vehicle design; Wheel loads; Wheels
• Uncontrolled Terms: Fatigue life; Shot peening
• Old TRIS Terms: Metallographic structures; Rapid transit railways; Thermal cracks (Wheels); Wheel defects; Wheel design; Wheel stresses; Wheel thermal stresses
• Subject Areas: Design; Geotechnology; Highways; Materials; Public Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00091889
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TDC/500-74/4
• Files: TRIS
• Created Date: Sep 10 1981 12:00AM