ANALYSIS OF STRAIN GAGE DATA FROM SUBMARINE MSW PIPING.
Abstract
This thesis presents a procedural sequence for processing and assessing the integrity of experimental strain gage data taken on piping on which gage rosettes are arranged in circumferential patterns at several sections of a piping system. The method of least squares is used to obtain 'best' values for strain per unit loading for each gage element. This data is used to find principle stresses and values of normal and shearing stress on a normal cross section at each rosette location. The data is then smoothed to obtain normal and shearing stress as functions of angular position for each ring of rosette. A computer program has been devised to perform these operations and provide a graphical output to assess degree of fit with experimental data. Finally, manual computation is employed to study the equilibrium of various segments of the piping in evaluating the overall integrity of the data. This procedure and program have been used in evaluating tests performed on the main seawater piping system of the USS Benjamin Franklin (SSBN 640). Some results of the dockside hydrostatic tests are presented herein for purposes of illustration. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1966
- Accession Number
- AD0830054
Entities
People
- Joseph William Koch Jr
Organizations
- Naval Postgraduate School