34,045 €
2017-02-27 17:35:26

Delivering technological ambition

In the absence of actual data, it is essential to have the resources needed to maintain full control over all the challenges associated with our technologies. This is why GTT has its own research, test and approvals laboratories at its Saint-Rémy-lès-Chevreuse facility, which investigate and analyse the thermal and mechanical properties of materials and sub-assemblies, especially under cryogenic conditions. Because we are involved in developing new technologies, we have also developed special testing and trialing procedures, which, in conjunction with our significant thermodynamic modeling resources, have established our laboratories as a benchmark for the industry.


The range of measures includes static and semi-static testing, with particular focus on rupture, impact and fatigue testing. Our laboratories focus particularly on testing materials and bonding procedures by simulating the actual conditions encountered in shipyards (including environmental conditions), and the characteristics of materials in the accelerated aging phase. We use hexapod testing platforms of between 1 and 6 tons to analyze the full-scale effects of 'sloshing', the loads imposed on containment systems subject to the impact of moving liquids.

These sea swell simulators - a major challenge to this type of research work - make it possible to model the movement of the liquid in a tank on a small scale, but with millimeter-perfect linear precision. Each testing campaign normally runs for seven weeks, after which the data are analyzed as the basis for identifying those materials that respond most effectively to the mechanical demands measured during the testing phase. Models at 1/8th scale are also used to test containment systems under cryogenic conditions.


Although linked to high investment costs, these research and modeling facilities deliver many benefits, including the rapid availability and confidentiality of results, and greater innovation potential as a result of direct interactive contact between test teams and research teams. Another benefit of this organizational structure and its ability to promote internal knowledge is that every test is directly related to a particular project and the company's teams (40 of its 115 engineers work in the research laboratory), which means that the procedure is controlled from beginning to end, making the transport of LNG every bit as fascinating as aerospace and aviation.

Some tests that require highly specialized resources, such as shock bench, are subcontracted. These include crash tests that make it possible to examine the impact of wave energy on materials, for example. Once again, these large-scale tests - up to 4,000 metric tons of impact - require significant resources.


High level equipment for research and tests


Measuring the thermal conductivity of materials using guarded hotplates or GHPs (GTT owns 3 of the only 15 such machines worldwide!). This type of equipment is very important for a company that conducts fundamental research. Each test lasts 24 hours and uses 700 liters of liquid nitrogen.