FRACTURE OF UNIVERSAL BEAMS, WITH DISCUSSION AND CLOSURE

A SERIES OF EXPERIMENTS IN FRACTURE PROPAGATION IN A149 UNIVERSAL BEAMS IS DESCRIBED, IN WHICH THE FRACTURE INITIATOR WAS A PRESSED NOTCH ADJACENT TO A TRANSVERSE FILLET WELD. THE INITIATING STRESS WAS VARIED BY PRELOADING THE SPECIMENS TO VARIOUS LEVELS WHEN WARM. THE VARIATION OF THE STABILITY OF THE FRACTURES PRODUCED WAS COMPARED WITH THE NIL-DUCTILITY TEMPERATURE (NDT) MEASURED BY THE DROP-WEIGHT TEST. IT WAS FOUND TO BE PRACTICALLY IMPOSSIBLE TO PRODUCE HEAT-AFFECTED-ZONE OR PARENT METAL CRACKS IN THE MILD STEEL UNIVERSAL BEAM SAMPLE UNDER PRACTICAL LABORATORY CONDITIONS.

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 22-32
  • Serial:
    • Volume: 5
    • Issue Number: Pt4

Subject/Index Terms

Filing Info

  • Accession Number: 00209652
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 3 1972 12:00AM