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Figure 4.105: An illustration of gauge positions in the composite repair system
Finally, the study of stress and strain distributions on the final or completed
layer of the composite wrap (e.g. eight layers) was carried out at Points 3a and b, which
had the same specifications as Points 2a and b, as shown in Figure 4.15. The
phenomenon of load transfer in the base structure throughout layers of composite wrap
was further analysed based on the numerical and experimental readings taken from the
earlier works. The total number of channels for the data acquisition using CompactRio
system were 30 or 10 rectangular strain gauge rosettes.
4.5 Pressure Test
4.5.1 Results
This experiment has six sets of strain results at different locations with the
maximum internal pressure of 50 bar (5 MPa). Only results at the S3 location are
discussed in this section because its methodology is similar to others.
Table 4.1 summarises the results at the S3 location and the graph is shown in
Figure 4.16. The overall results are illustrated and discussed in the following section.
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