EFFECT OF SURFACE COATINGS AND EXPOSURE ON SLIP BEHAVIOR OF BOLTED JOINTS

EIGHTEEN JOINTS OF A36 STEEL WITH 1 IN. DIAMETER A325 HIGH STRENGTH BOLTS WERE TESTED TO INVESTIGATE SOME EFFECTS OF SURFACE TREATMENT ON SLIP BEHAVIOR. ALL JOINTS WERE INITIALLY BLAST CLEANED. THREE HAD SLOTTED HOLES. THREE WERE EXPOSED FOR 2,6, AND 12 MONTHS WITHOUT PROTECTION BEFORE ASSEMBLY AND TESTING. NINE WERE TREATED WITH LINSEED OIL OR VINYL WASH COATINGS AND EXPOSED TO AN INDUSTRIAL ENVIRONMENT FOR 2 MONTHS BEFORE TESTING. THREE WERE TREATED WITH VINYL WASH COATINGS BUT WERE NOT EXPOSED TO THE OUTSIDE ENVIRONMENT. SLOTTED HOLES REDUCED THE SLIP COEFFICIENT FROM 0.65. TO 0.49. EXPOSURE WITHOUT PROTECTION REDUCED THE SLIP COEFFICIENT FROM 0.65 TO ABOUT 0.4. THE SLIP COEFFICIENT WITH PROTECTIVE COATINGS WAS REDUCED FROM ABOUT 0.28 TO 0.26 AFTER 2 MONTHS EXPOSURE. THIS REDUCTION IS NOT SIGNIFICANT. /AUTHOR/

  • Supplemental Notes:
    • Hpr-1(4), NO 318.5, BPR-035
  • Corporate Authors:

    Lehigh University

    Bethlehem, PA  USA  18015

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Authors:
    • LEE, J H
    • O, CONNER C
    • Fisher, J W
  • Publication Date: 1968-6

Subject/Index Terms

Filing Info

  • Accession Number: 00215885
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Dec 6 1994 12:00AM