Accession Number : AD0660205

Title :   LARGE-SCALE MODEL EVALUATION OF A WELDED, WEB-STIFFENED TITANIUM SANDWICH HULL FOR DEEP-SUBMERGENCE APPLICATIONS.

Descriptive Note : Final rept.,

Corporate Author : NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER WASHINGTON D C STRUCTURAL MECHANICS LAB

Personal Author(s) : Fishlowitz,Ely G.

Report Date : JUL 1967

Pagination or Media Count : 52

Abstract : A 9-ft-diameter, web-stiffened titanium sandwich cylindrical hull with hemispherical end closures was designed for deep-submergence applications. A 30-in.-diameter model was fabricated and hydrostatically tested to demonstrate fabricability and performance under simulated service loads. All fabrication was performed using procedures applicable to full-scale hulls. Prior to the construction of the complete model, a trial manufacturing section of the sandwich hull was successfully built to demonstrate fabricability. Specimens of weld and base material from this trial section were found to have excellent material properties. The fabricated model, complete with hemispherical closure head and other structural details, was fabricated to close tolerances and possessed a high degree of structural integrity during hydrostatic testing. Results of the pressure tests were shown to be highly predictable; experimental and calculated collapse pressures agreed within 4 percent. (Author)

Descriptors :   (*HULLS(MARINE), DEEP SUBMERGENCE), (*TITANIUM ALLOYS, HULLS(MARINE)), SANDWICH CONSTRUCTION, REINFORCING MATERIALS, MODEL TESTS, WELDS, FEASIBILITY STUDIES, LOADS(FORCES), PRESSURE

Subject Categories : Metallurgy and Metallography
      Submarine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE