Improving Global Quality of Life
Improving Global Quality of Life
Improving Global Quality of Life
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In order to make the developments in the field available to practical users as well as the scientific community,<br />
a number <strong>of</strong> s<strong>of</strong>tware codes have been made available in all fields related to welding. These include the<br />
prediction <strong>of</strong> the weld parameters and the weld properties as well as the simulation <strong>of</strong> the microstructure<br />
evolution in the HAZ. Examples are shown in Figure 4.10, where the left image shows a screenshot <strong>of</strong> the<br />
process s<strong>of</strong>tware WELDSIM and the right image the s<strong>of</strong>tware MatCalc for simulation <strong>of</strong> the precipitate<br />
evolution in the HAZ.<br />
Figure 4.10 Development <strong>of</strong> computer s<strong>of</strong>tware: WELDSIM (left) and MatCalc (right)<br />
(Reproduced courtesy: N. Enzinger and E. Kozeschnik, Graz University <strong>of</strong> Technology)<br />
If modelling and simulation continues to grow at the present speed, significant progress in the prediction<br />
<strong>of</strong> welding processes and microstructure evolution is to be expected in the future. This will affect the<br />
understanding <strong>of</strong> the mechanisms <strong>of</strong> welding and will enable increasingly more accurate prediction <strong>of</strong> the<br />
weld and entire component properties. Computer codes will continue to represent major research and<br />
engineering tools in research and development <strong>of</strong> welding procedures and will also help in developing new<br />
concepts to open the way for joining materials and components which are not yet accessible by established<br />
techniques. The most important impact <strong>of</strong> modelling and simulation is given by the fact that the development<br />
times and costs for welding applications and procedures can be drastically reduced.<br />
4.6 Strategies to meet scientific challenges<br />
One <strong>of</strong> the major challenges <strong>of</strong> welding and joining technologies is to improve quality and productivity at<br />
the applied side <strong>of</strong> the community. On the other side, scientific challenges require research efforts (more <strong>of</strong><br />
a fundamental nature) to generate innovation and better understanding <strong>of</strong> the complex issues <strong>of</strong> process,<br />
material, inspection and structural performance <strong>of</strong> welding and joining. The strategy to meet scientific<br />
challenges <strong>of</strong> 2020 should be described both in fundamental and applied research terms.<br />
Basic research should provide the means to resolve key issues <strong>of</strong> welding science by transforming the<br />
welding and joining technology from “empirical-based” to “physical-based” process to cover the entire lifecycle<br />
<strong>of</strong> the welded product. This requires parallel knowledge building in the physical, chemical, materials<br />
sciences, mechanical and mechanics areas to tackle challenges <strong>of</strong> welding science.<br />
A creation <strong>of</strong> a knowledge based “virtual factory” requires better understanding <strong>of</strong> the relationships between<br />
“3Ps”, Process-Property-Performance <strong>of</strong> welded products and modelling <strong>of</strong> these stages as an integral<br />
system. To achieve that goal, it is essential to ensure that welding process and welding mechanics specialists<br />
are included in product/project design teams and that welding, and joining as well as service performance<br />
32 <strong>Improving</strong> <strong>Global</strong> <strong>Quality</strong> <strong>of</strong> <strong>Life</strong> Through Optimum Use and Innovation <strong>of</strong> Welding and Joining Technologies