Advanced algorithms | OSMOS Group

The OSMOS Mathematics Department works closely with our team of structural and civil engineers. Their mission: designing cutting-edge mathematical tools in order to improve our analyses and to provide our clients with increasingly precise and relevant information.

To this end, OSMOS is developing research partnerships with French and international institutions to enrich the state of the art on the study and knowledge of structures and to put it at the service of Structural Health Monitoring. This work is then used in the development of our data processing algorithms, which allows us to constantly improve the quality of our analyses.

Stability index

OSMOS’s methodology consists of exploiting the continuous measurements recorded, looking at different time scales (from instant to seasonal cycles), in order to deduce the relevant indicators for the bridge’s structural behavior and to establish a concrete assessment of its stability.

Verification of orders of magnitude

Based on the knowledge of the resistant capacities of civil engineering materials, OSMOS has developed calculation models to help determine whether the reactions of a structure to the loads that stress it are normal or not.

Deterministic state index prediction

According to a deterministic approach based on a defined set of hypotheses, it is also possible to make an estimate of the evolution of this stuctural state index: when is the structure likely to be no longer fit for service, to be considered dangerous?

Weigh-in-motion and deformation WiM+D®

Our WiM+D ® system allows us to determine in real time, the weight, speed and configuration of the vehicles passing over a bridge and to estimate their impact on its state. Thanks to deformation measurements, it is possible to verify the normal behaviour of the deck under the effect of live loads.

Identification of vibration modes

OSMOS records the dynamic characteristics of a structure (frequency, damping rate and modal deformation of each vibration mode) to define its intrinsic signature. In the case of major stresses (shock, earthquake), studying the modifications of the signature makes it possible to know whether the building has suffered damage, to locate it and to assess its criticality.

Pre-stress cable break detection

Our systems allow us to assess the impact on the structure if one of the prestressing cables has broken and to warn of such an event.

Inter-floor movements estimate

When an earthquake occurs on a high-rise building, a rapid analysis of the acceleration measurements during the earthquake makes it possible to estimate the extreme relative displacements of the floors and to evaluate the damage according to this criterion, adopted in certain countries located in highly seismic zones.

Displacement estimate

Based on acceleration measurements, we analyze the displacements of the structure under the effect of vibrations induced by an earthquake or a storm.

Damage detection during and after an earthquake

Our systems detect the first seismic waves and warn of an impending earthquake to protect users. Then, OSMOS detects damages on the structure and determines their criticality in order to avoid unnecessary closure of the building.

We develop and produce our own analytical tools and then test and validate new data processing methods, which allows us to constantly innovate, in terms of both our processes and the quality of information we provide.

Basic analysis

A basic analysis, showing average values or event counts: deformation of materials, the structure’s angle of inclination, temperatures, etc.

Advanced analysis

Algorithms used to distinguish between the different effects impacting the structure and to detect anomalies, in order to derive a better knowledge of them, using measurement-based correlation models.

Predictive analysis

Extensive knowledge obtained through large-scale statistical analysis: advanced inverse modeling, leading to accurate lifetime assessments, maintenance optimization and cost deferrals.

As a pioneer of Structural Health Monitoring (SHM), OSMOS has initiated decisive research projects and relies on highly renowned scientific partners.

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Advanced algorithms & Research