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The paper “Sensitivity of Modal Passport Techniques to Wind Turbine Blade Damages”, which presents a new approach to wind turbine monitoring, was published in the international journal of Mechanics of Composite materials.
The collaboration with Northern Marine Group has started to provide vibration diagnostics and monitoring of electric motor bearings of ship machinery.
Bureau Veritas certified our management system in accordance with the requirements of ISO 9001:2015 with a scope: VIBRATION MEASUREMENT FOR DIAGNOSTING AND MONITORING THE TECHNICAL CONDITION OF TRANSPORT, SHIP MACHINERY, ENERGY AND OTHER MACHINES AND EQUIPMENT.
Case study. Vibration diagnostics at a small hydroelectric power plant revealed abnormal operating conditions in a turbine bearing. Following maintenance, the outdated grease was replaced with new grease, preventing equipment failure and reducing vibration levels.
In cooperation with the Latvian representative office of Bureau Veritas, the process of certification of vibration measurement and diagnostics process management systems in accordance with the ISO 9001 standard has been initiated.
Case study. Using a portable equipment kit, the critical units of the Mi-8 helicopter were diagnosed in the field. Technical condition of both engines, main gearbox, tail rotor gearbox and transmission bearings was estimated using Vibropassport diagnostic parameters. Although most of units were recognized “healthy”, reduced gas-dynamic stability margins were identified in some compressor stages of both engines, and abnormal dynamic behaviour of drive unit’s gearwheel in MGB was detected.
Our presentation “Predictive Vibration Diagnostics of Wind Turbine Aggregates” in XI international conference on experimental vibration analysis for civil engineering structures in Porto, Portugal.
Case study.Application of the Vibropassport techniques to the vibration monitoring data of 2.75 MW wind turbine. An early-stage damage on pinion’s gearbox teeth was diagnosed. Subsequent visual inspection of the gear confirmed the presence of minor scratches.
Our report “Vibration Diagnostic Technologies for Helicopter MRO” was presented to aerospace experts at the 50th European Rotorcraft Forum, Marseille, France.
As part of the initial research into the application of the Modal Passport methods, a test rig was constructed that can be used for testing small-sized rotating blades.
We completed the study "Application of Predictive Diagnostics Technology for Aircraft Power Plants," in which the Vibropassport diagnostic technologies were validated on a test engine and a Saab 340 aircraft.
The 2nd interim work of project “Application of aircraft powerplant predictive diagnostic technology” was completed, including processing and analysis of bench and field tests and field tests of an aircraft engine on an aircraft.
The collaborative project “A prototype of typical structural health monitoring system of operating objects for condition-based maintenance” has been completed. The key methods for the serial production and application of SHM systems were validated, resulting in practical and applicable solutions rather than theoretical concepts. This approach can significantly enhance the efficiency and cost-effectiveness of maintenance practices by moving away from traditional scheduled maintenance to a more proactive and responsive strategy.
Presentation “SHM System Prototype for Serial Structures Operating under Different Conditions” at the international conference EVACES 2023, Milan, Italy
Our team started the research study “Application of aircraft powerplant predictive diagnostic technology”. Experimental works are aimed at the practical application of predictive diagnostic techniques of Vibropassport for compressors, bearings, gears as well as foreign objects detection in engines.
In cooperation with SIA “ETKC” the implementation of project “Research on the application of predictive diagnostic technology for aircraft powerplant” was launched.
Presentation “Unified Monitoring and Diagnostic System of a Helicopter: The Concept and the Operating Demonstrator” 48th European Rotorcraft Forum, Winterthur, Switzerland.
The first stage of the collaborative project with RTU has been completed. The series of specimens with integrated sensor network were manufactured and the bench for testing was prepared.
The number of engines diagnosed in overhaul engine shop during testing using Vibropassport technologies exceeded 100 since the diagnostic system was launched.
Our presentation “The Demonstrator of Structural Health Monitoring System of Helicopter Composite Blades” at the 4th International Conference on Structural Integrity, Funchal, Madeira, Portugal.
The research study “Complex Demonstrator of Aircraft Perspective Vibration Diagnostic Technologies” have been successively completed. The research was conducted within the project No.1.2.1.1 / 18 / A / 001 of Energy and Transport Competence Center. The operating demonstrator of advanced techniques and the diagnostic system of helicopter aggregates, including the fuselage and rotor with blades have been developed. As the technologies demonstrator the serial aircraft acted also, on which the modal testing techniques and equipment developed within project frames. On the way of experimental testing the capabilities of the system were studied aimed for damage identification of the fuselage and rotating blades. Restrictions related to oronavirus pandemic interfered with the demonstration alive at Riga airport. Despite of that, the demonstration of promising structural health monitoring technologies have been conducted using modern means of communication. Representatives of companies from Denmark, Switzerland, Germany, Italy, Poland and Russia were introduced into the demonstrator, testing procedures and results using presentations with video and audio materials.
In the first quarter of 2021, studies of the previous stages were successfully completed and positive results were obtained, including the scale of artificially introduced defects to demonstrate the capabilities of a promising helicopter diagnostic system, as well as diagnostic results that convincingly confirm the ability to carry out on-line monitoring of a helicopter in flight. The applicability of vibrodiagnostics methods for the structures of an operating ATR-72 aircraft in ground conditions has been confirmed.
25th January 2021The test series have been completed in December 2020 in which the demonstrator of advance Structural Health Monitoring system based on operating KA-26 helicopter was used. The tests of the demonstrator was aimed for practical estimation of system’s sensitivity to seeded faults of rotating blades and the tail boom. As the pandemic situation limits opportunities for above demonstrations alive, we prepared the presentation that illustrates some details of the demonstrator, the tests and the results, which can be opened here.
7th October 2020The most important research stage of operational helicopter modal testing is successfully completed. The modal properties of both fixed and rotating helicopter structures are identified in both frequency and shape domains. The resolution capabilities of advance vibration diagnostic are determined. The system applying the novel “modal passport” approach is able for detection the local failures both fixed and rotating
7th July 2020Initial stage of research works is conducted to estimate the potential economic effect of vibration diagnostic techniques application in technical maintenance of aircrafts. At the same time the research works are going to optimize the scale of seeded faults required for more convincing demonstration of advanced system capabilities of actual failures detection on the operating helicopter.
9th April 2020In the 1st quarter of 2020 the set of multichannel equipment for testing control and management has been delivered and assembled on board of the helicopter. The system has been tested and prepared for research study works on operational helicopter.
6th January 2020To the end of 2019 the onboard measurement system has been assembled on the helicopter. Multichannel DAU, remote control switchers and data transmitting equipment has been tested and prepared for laboratory research study stage.
3rd October 2019Within frames of the research study “Demonstrator of Aircraft Perspective Vibration Diagnostic Technology Complex” in 3rd quarter of 2019 have been completed assembling and testing works. Also FE modelling and computation works are made for helicopter natural modes identification.
1st April 2019D un D centrs launches a study inside project No.1.2.1.1 / 18 / A / 001 within the Energy and Transport Competence Center. The smart specialization chosen by the ETCC is smart energy, which includes three research sub-themes: Smart Energy General Issues; Intelligent engineering systems and power generation solutions; Smart energy and transport. The project is being implemented from April 1, 2019 until December 31, 2021. The total amount of ERDF support for the project is EUR 4 708 111.50.
Our study is No. 4 “Demonstrator of Aircraft Perspective Vibration Diagnostic Technology Complex”. The purpose of the study is to realize the stand on which the development of vibration diagnostics technologies can be performed on any type of aircraft. This stand is also needed for demonstration and promotion of new technologies. The study is being implemented from 1 April 2019 to 30June 2021.
Collaborative project with Riga Technical University “A prototype of typical structural health monitoring system of operating objects for condition based maintenance” has started.
Joint project has started with cargo airline “RAF-AVIA” for the in-flight verification of the structural health monitoring system on ATR 72 aircraft.
“The Demonstrator of Helicopter Structural Health Monitoring Technique” International conference RelStat-2020, Riga, Latvia.
The number of main gearboxes diagnosed in overhaul engine shop during testing using Vibropassport technologies reached 20 since the diagnostic system was launched.
The number of engines diagnosed in overhaul engine shop during testing using Vibropassport technologies reached 50 since the diagnostic system was launched.
“Modal Passport Application for Dynamic Properties Validation and Structural Health Monitoring of Helicopter Blades”, Warsaw, Poland.
The use of Vibropassport technology made it possible to identify damage to a fan bearing at a metallurgical plant's foundry.
D un D Centrs has started a research Nr. 18 "Study of planetary gearbox dynamic properties for vibrodiagnostic technology research and demonstrator development" within Smart Engineering System, Transport and Energy ICC project (SESTE ICC). This research will provide a one of a kind planetary gearbox vibrodiagnostics technology, which is to be experimentally validated and verified. This is another step in vibrational diagnostics field.
Presentation “Advance technique for vibration diagnostics of planetary gears: experimental verification” at 14th International Conference Mechatronic Systems and Materials (Zakopane, Poland).
In partnership with Aviation Research Center D un D centrs has finished a research with a sounding name – “Study of aircraft engine components dynamic properties for engines vibrodiagnostic technology research and complex demonstrator development”. The goal of this project was to implement engine diagnostics technology on a special rig and demonstrate effectiveness of such technology. D un D centrs has provided scientific base for this project and shared its experience in engine vibrodiagnostics. Read more about the project at Aviation Research Center website.
We have started the research "Study of planetary gearbox dynamic properties for vibrodiagnostic technology research and demonstrator development". The research is aimed at diagnosing the epicyclical stages of helicopters, wind turbines and other transport and energy units.
Case study. The AI-24 engine, for which a warning had been previously issued, was removed from the aircraft due to a breakdown. After disassembly, it was discovered that the rotor had seized due to the complete wear out of the turbine bearing.
Our paper “OMA Techniques Optimization for SHM of Typical Industrial Structures“ was presented at 7th International Operational Modal Analysis Conference, Ingolstadt, Germany.
D un D centrs has registered Vibropassport™ trademark. Vibropassport is a custom product, developed by D un D centrs, and serves as a complex of measures for diagnosis of gas turbine engines or any other machine or structure. Vibropassport includes majority of diagnostics methods developed and used by D un D centrs throughout the years.
Case study. Three AI-24 engines of An-26 aircraft were inspected using vibration diagnostic techniques of Vibropassport. Based on the diagnostic results, the airline issued a warning regarding one of the engines due to a bearing problem. A more detailed engine inspection was recommended to prevent a possible engine failure.
Our presentation “Advanced Vibration Diagnostic Techniques for Overhaul Costs Saving of Helicopter Engines” was discussed at 42nd European Rotorcraft Forum, Lille, France.
D un D Centrs is providing research of aircraft engine components dynamic properties for engines vibrodiagnostic technology and complex demonstrator development. The goal is to increase flight safety and aircraft operation effectiveness, as well as maintenance cost reduction. This research is a part of a Smart engineering system, transport and energy ICC project. This project Nr.1.2.1.1/16/A/008 is being run from 1.07.2016 - 31.12.2018. Total EU funding for the project is 3 206 250 EUR.
Research No 1.22 “Advanced monitoring technologies of gas and liquid pipelines vibration” is going as planned and will be finished by 31.12.2015.
Our presentation “Experimental Technology of Operational Pipeline Condition Monitoring” was presented to civil structures monitoring experts at the international conference EWAKES 15, Dubendorf, Switzerland.
Testing of an experimental system for condition monitoring of rotating blades with an integrated sensor system using OMA methods has begun.
The results of the study on the experimental pipeline demonstrated the capability of the system with a sensor network and OMA techniques to monitor the condition of an operating pipeline, including deformation of individual sections, weakening of the support, or external impact.
SIA “D un D centrs” has successfully finished researches No 1.26 “Advanced monitoring technologies of rolling bearing vibration of transport and energetics equipment development and development of monitoring devices” and No 1.32 “Development of advanced monitoring technologies of rotating blades in machinery in transport and energetics equipment”.
During a field study Nr. 1.32 “Development of advanced monitoring technologies of rotating blades in machinery in transport and energetics
equipment” with the project “Transport Engineering ICC creation” a contract for equiping the third helicopter blade model has been signed
and modal tests for the second model have been finished. During a field study Nr. 1.22 “Advanced monitoring technologies of gas and
liquid pipelines vibration” with the project “Transport Engineering ICC creation” pipelines laboratory model tests have been finished
and real-scale model tests have started.
Project realized and supported by LIAA and ERAF
Case study. A vibration diagnostic system for jet engines has been commissioned at the test rig of overhaul engine shop. Algorithms of the system are based on our Vibropassport techniques and allow estimating overhaul quality of engine critical units, including bearings, compressor and turbine stages, combustion chamber and gears.
Tender supported by ERAF
The procurement is needed for a field study “Advanced monitoring technologies of gas and liquid pipelines vibration” with the project “Transport Engineering ICC creation”. In order to do that, Transport Engineering ICC and Latvian Investment and Development Agency has concluded a contract Nr. L-KC-11-0002 on the 6th of April 2011.
Case study. A study was conducted to determine the causes of high vibration on the jet engine test rig. The frequencies and shapes of natural vibrations of the rig's structures that led to the excess vibration were identified. The rig's design was modernized based on our recommendations, and the number of engines with high vibrations was reduced.
During a field study Nr. 1.22 “Advanced monitoring technologies of gas and liquid pipelines vibration” with the project “Transport Engineering ICC creation” the first stage of the pipelines digital model has been finished and technical requirements for the pipeline real model has been developed. During a field study Nr. 1.32 “ Development of advanced monitoring technologies of rotating blades in machinery in transport and energetics equipment” with the project “Transport Engineering ICC creation” modal tests of a helicopter blade model has been conducted and its dynamic properties have been determined.
D un D Centrs has started a field study “Advanced monitoring technologies of gas and liquid pipelines vibration” with the project “Transport Engineering ICC creation”. In order to do that, Transport Engineering ICC and Latvian Investment and Development Agency has concluded a contract Nr. L-KC-11-0002 on the 6th of April 2011. The main goal of the study is to work out adaptive monitoring technology of gas and liquid pipelines vibration. This technology will provide safety for pipelines and increase of its economical effectiveness.
SIA “D un D centrs” calls for tender of the following items:
Tender supported by ERAF
SIA "D un D centrs" calls for tender of the following items:
The procurement is needed for a field study “Advanced monitoring technologies of rolling bearing vibration of transport and energetics equipment development and development of monitoring devices” with the project “Transport Engineering ICC creation”. In order to do that, Transport Engineering ICC and Latvian Investment and Development Agency has concluded a contract Nr. L-KC-11-0002 on the 6th of April 2011.
We have started construction of an experimental operating pipeline system. Pipes of the system are equipped with an integrated sensor network for pipeline condition monitoring. The system will be used to validate applicability of vibration diagnostic methods for condition monitoring of operating pipelines using OMA techniques.