Operational Modal Analysis, Vibration & Earthquake Monitoring for Civil Structures
Conduct OMA, Periodic or Permanent Monitoring without Expensive Equipment & Complicated Setup with OMAway Solution
All in one solution: Software & Sensors
Designed for Operational Modal Analysis
Permanent Vibration & Earthquake Monitoring
Versatile Solutions for Monitoring Structural Health
A to Z Solution for monitoring important indicators of any civil structure
Dynamic Features & Vibration
Strain, Displacement, Crack & Load
Wireless & Versatile Solutions
Structural Design & Engineering Consulting Services
Design that gives you safe, cost-efficient and code-compliant projects
On time, in budget
Optimized for Cost
Optimum Performance
PRODUCTS & SERVICES
OMAway Solution
OMAway makes Operational Modal Analysis simple and cost- efficient without complicated setup or hiring outside help. OMAway accelerograph comes with a software for OMA and offers remote collection of data.
Structural Health Monitoring
We provide a multitude of solutions depending on the project – structure and the structural indicator you want to monitor. We start from our in house solution of OMAway sensors and software for vibration, earthquake and structural monitoring to a variety of products for monitoring static quantities (e.g. displacement, strain, crack) in cooperation with our partners.
Structural Design and Engineering Consulting Services
Our clients can hire Unquake engineers for structural design of concrete, steel, timber and masonry structures according to the Eurocodes. The analysis part is performed with state of the art Finite element model software. We can also aid structural engineers to interpret and integrate in a FEM framework the results from periodic monitoring (e.g. extracted dynamic features) and create much more accurate models that are especially helpful in old and historical structures.
PROJECTS
Agios Minas is a significant monument church build around 1860 in Heraklion of Crete in Greece.
Tønsberg tower was raised in 1888 as a memorial of the historic fortress in Tønsberg, Norway.
Sima bridge was built in Rethymnon of Crete, Greece in the early 1900’s
PROJECTS
Operational Modal Analysis, Finite Element Model Calibration and Structural Assessment based on Eurocodes 1992, 1998
Agios Minas is a significant monument church build around 1860 in Heraklion of Crete in Greece.
After OMA, simplified model calibration and first level seismic assessment was also performed
PROJECTS
Zografos’ Mausoleum is the last home-place of father and son Zografos, two great benefactors of modern Greek history. The style is French Baroque and resembles, in miniature, the tomb of Napoleon in Paris.
Built by Egyptians around 1830 in Rethymno, Greece and located at the tip of a stone fortification. It consists of a lantern and gallery atop a stone column resting on a square base of stone. The top third of the column are round,, the bottom two-thirds octagonal.
Amir S.
Researcher, Norway
Our group is working as the leader of work package 5 of the HYPERION project. HYPERION is a 4-year EC Funded project that has received funding from the European Union’s Horizon 2020 research and innovation program. The main focus of the project is to assess the vulnerability of the historic area subjected to different types of risks and investigate their impact on economies, politics, and societies to deliver an integrated resilience assessment platform. In the link below, you can find more about the project: https://www.hyperion-project.eu/
Since destructive tests for investigating the material properties of cultural heritage assets is impossible, nondestructive solutions should be utilized. For this purpose, the operational modal analysis is employed for model updating the assets to provide a robust finite element model.
Since destructive tests for investigating the material properties of cultural heritage assets is impossible, nondestructive solutions should be utilized. For this purpose, the operational modal analysis is employed for model updating the assets to provide a robust finite element model.
Installation of the sensors is effortless and does not any special equipment, and it can be done with glue and steel plates as the sensors’ bases. Moreover, the Unquake software is friendly to perform the initial analysis to have an overview of the test in the most efficient way.
The first customers are always the losers! We also expect problems with the sensors and bugs for the software, and we also face these problems. But if I want to be honest, we could not feel them due to the best customer service of the company. I really appreciate all the supports and helps that we had during our project from the company employees. They were on time for answering the questions and helpful for solving the problems, and we could reach them even by phone easily during the day.
ARIS X
Structural Engineer, Greece
The accelerographs were used for the operation modal analysis of the following projects:
For projects A and C the solution of Operation Modal Analysis was selected because it is considered as, probably, the only reliable method for extracting the dynamic characteristics of a masonry structure. Destructive and medium destructive technics like core sampling and rebound test, give an evaluation of the mechanical properties of masonry ‘s stone and mortar. But the behavior of masonry as a homogenous material cannot be extracted. Therefore, the Operational Modal Analysis gave an approximation of the real vibration frequencies of the structure. Those data were used for the calibration of a finite element model created, comparing calculated and measured frequencies.Regarding project B, although the concrete ‘s characteristics are more easily to be estimated, the Operational Modal Analysis made possible to evaluate all the factors that influence the dynamic response of the building, such as the influence of the infill masonry. Although concrete acts as a homogenous material, much more comparing to masonry, it was observed a wide variation of the finite element model frequencies compared to the measured ones. That proved the necessity of reliable estimation of the dynamic behavior, even in the cases of more “common” structural systems.
There was a concern regarding the sensitivity of the acceleographs. Meaning whether they would be able to isolate the dominant frequencies, in case of vibration form factors, other than ambient viabration. Nevertheless, even in the case of the stone bridge, the acceleographs were able to distinguish the ambient vibration from the external factors (car traffic vibrations)
It was surprisingly easy to install the sensors and process the data even in the case of multiple accelerographs installation.
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