Experimental Investigation of the Effect of Surface Markings on the Mechanical Integrity of Weathering Bridge Steels - Phase II

The purpose of this proposed work is to study the effect of plasma scribe notch depth on microstructure and fatigue properties of 50W weathering bridge steel. Scribing parameters, which include writing speed and Amperage, will be altered resulting in varying notch depth and heat affected zone (HAZ) size. A relationship between plasma writing parameters and notch depth/HAZ will be revealed, as well as the dependence of fatigue life on increasing notch depth. The overall goal of this study is to provide textual guidelines for marking bridge steels for future standardization and implementation.

Language

• English

Project

• Status: Terminated
• Funding: $165000
• Contract Numbers:

  BDV31 977-50

• Sponsor Organizations:

  Florida Department of Transportation

  Research Center
  605 Suwannee Street MS-30
  Tallahassee, FL  United States  32399-0450
• Project Managers:

  Duke, Steven

• Performing Organizations:

  University of Florida, Gainesville

  152 Rhines Hall
  P.O. Box 116400
  Gainesville, FL  United States  32611
• Principal Investigators:

  Manuel, Michele

• Start Date: 20160105
• Expected Completion Date: 20170401
• Actual Completion Date: 20170701

Subject/Index Terms

• TRT Terms: Fatigue (Mechanics); Guidelines; Heat affected zone (Metals); Microstructure; Notching (Cutting); Standardization; Steel; Weathering steel
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 01586733
• Record Type: Research project
• Source Agency: Florida Department of Transportation
• Contract Numbers: BDV31 977-50
• Files: RIP, STATEDOT
• Created Date: Jan 12 2016 2:00PM