Neutron stress measurement of triaxial residual stress tensors in an aerospace weldment before and after post-weld heat-treatment

Book · Tue Dec 31 04:00:00 EST 1996

OSTI ID:442930

Winholtz, R A; Krawitz, A D ^[1]

---

1. Univ. of Missouri, Columbia, MO (United States)

Triaxial stress tensors and their corresponding principal stresses were determined with neutron diffraction, before and after post-weld heat-treatment, at 14 positions in and near a circumferential weld in a subscale model cylinder of the NASA-Advanced Solid Rocket Motor. No principal stress directions were assumed in making the measurements. The principal stresses range from {minus}393 to +1,045 MPa in the as-welded condition and decreased to a range of {minus}212 to +421 MPa after post-weld heat-treatment. The largest as-welded tensile stresses were located around the cap pass heat affected zone in the interior of the material and were aligned with the hoop direction of the cylinder.

• Sponsoring Organization: National Aeronautics and Space Administration, Washington, DC (United States)
• OSTI ID: 442930
• Report Number(s): CONF-950682--; ISBN 0-87170-567-2
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
36 MATERIALS SCIENCE
EXPERIMENTAL DATA
HEAT TREATMENTS
NEUTRON DIFFRACTION
RESIDUAL STRESSES
ROCKET ENGINES
STEELS
STRAINS
WELDED JOINTS