Improving Global Quality of Life
Improving Global Quality of Life
Improving Global Quality of Life
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3 Significance <strong>of</strong> welding and joining<br />
Homogeneous<br />
Structure<br />
Strength<br />
Over-Matched<br />
Welded Structure<br />
Strength<br />
Under-Matched<br />
Welded Structure<br />
Plastic Zone<br />
Remote Plasticity<br />
at the Base Metal<br />
Confined Plasticity<br />
within Weld Zone<br />
Figure 3.4 Schematic showing the significance <strong>of</strong> yield strength mismatch on deformation<br />
and fracture behaviour under static loading (Reproduced courtesy <strong>of</strong>: GKSS, M. Kocak)<br />
In general, cause and development stages <strong>of</strong> any damage or failure process <strong>of</strong> welded structures are complex.<br />
Various factors may interact at different stages <strong>of</strong> any damage occurrence. Use <strong>of</strong> advanced modelling tools<br />
and fitness-for-service procedures at the design stages <strong>of</strong> complex welded structures could ensure structural<br />
integrity and safe operation while contributing to the economic fabrication and inspection scheme.<br />
Development <strong>of</strong> Structural Health Monitoring (SHM) systems for welded structures is still a challenge for<br />
the designers and plant operators. Furthermore, use <strong>of</strong> wireless, remote sensors with sufficient reliability<br />
to monitor large and complex structures to prevent development <strong>of</strong> a critical situation at any part <strong>of</strong> the<br />
structure require further research. This <strong>of</strong>fers new opportunities and challenges for structural and other<br />
engineering disciplines.<br />
Through Optimum Use and Innovation <strong>of</strong> Welding and Joining Technologies<br />
<strong>Improving</strong> <strong>Global</strong> <strong>Quality</strong> <strong>of</strong> <strong>Life</strong><br />
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