Marine Industries - Noise and Vibration Test and Measurement Solutions
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Verso (Intérieur) page 2 Verso (Intérieur) page 4 Made for Your Demanding World 1- Improve Efciency Verso (Intérieur) page 5 Measuring your Ships and Propulsion Systems Test Cells 3- Minimize Costs Improve production testing efciency > Integrated & automated test process and report generation > User friendly operation > Mutichannel real-time processing and diplays > Universal and multiple sensor’s types: microphones, acceleration, temperature, strain, pressure… Rotating Analysis Torsional Analysis On reciprocating machinery the cause of vibrations often comes from the non-linearity of the angular speed. Thanks to the integrated frequency to RPM converter, the OROS analyzers provide the instantaneous angular speed inside each shaft revolution. The analysis of this speed in frequency or time domain give helpful information for vibrations reduction during prototyping or for source identication while doing service diagnostics. Travel light for reliable tests > Versatile toolbox for all noise and vibration diagnostics applications > Distributed acquisition systems over the ship > Portable and rugged analyzers for eld measurements > Multichannel simultaneous acquisition > Real-time analysis for eld efciency > Distributed acquisition systems over the ship Remote Monitoring Optimize costs and prevent failure > Random & unrepeatable phenomena > Alarm trigerring warning via email or the Internet > Collect raw signal information for thorough ofce processing thanks to its toughness and its complete panel of functions.” Noise and Vibration Maintenance Engineer, Propulsion Department. Damping & Isolation Modal Analysis Reciprocating machines are complex installations. They generate specic vibration signatures. The objective is their performance optimization and faults detections. For example, injection delay, valves faults, segmentation wear can be identied with EngineDiag. This software module integrates the machine mechanical properties: number of cylinders, ring order and timing diagram, allowing to provide pertinent decision criteria on the eld. Time signal, overall levels as well as angle-frequency representation on the machine cycle are efcient results for diagnostics. Modal Analysis is one of the key steps when testing machines: it determines their structural characteristics and so, denes how they reacts to operating excitations. Shaker or impact hammer excitations can be used to capture the experimental datasets: the nal stage is the actual OROS modal analysis. Gear Analysis Gearboxes is a very critical part of transmission and has specic vibration signature requiring correlation or cepstrum analysis for an accurate diagnostics. The correlation is useful to determine the correlated part of signals from different locations on a structure. This helps tracking the root and cause of vibration phenomena machinery structure and/or cinematic. The cepstrum is an efcient tool to detect periodic shocks in bearings or parts of rotating machinery. It is specially adapted when the spectrum levels are noised with their impulsive components. Propulsion Systems > Gas Turbines > Diesel Engines > Generators > Motors > Gearboxes Roller Bearing Analysis Damaged roller bearings are common vibration sources. Their vibration spectrum, measured with an accelerometer mounted on the casing, allows you to determine mechanical failures on balls or races. Envelope demodulation and kinematics markers, part of FFT-Diag module, are the key tools for that purpose. Experts from OROS come on-site for applied trainings. They will help you using your OROS system. They can provide assistance in your measurement. They are also able to recommend optimization in your measurement process depending on your application and eld requirements. > “With my OROS analyzer, I’m really condent during on-board measurements A powerful analysis to solve problems related to forced vibrations. Only with few measurement points, determine the source of high vibration level and the structural modications to be implemented on the machine. Absorbing and damping mounts are the components through which the vibration energy is transmitted between the engine and the rest of the ship: their properties, dimensions and positions should be determined with care. The techniques used are cross spectrum, transfer functions, damping, as well as ODS (Operating Deection Shape). With torsional analysis, detect, follow the torsional resonance of the shaft and, for example, identify problems due to exible coupling On-Site Measurements & Applied Trainings They trust OROS ODS (Operating Deection Shape) Reciprocating Machine Analysis On-board Testing Structural Dynamics Noise Analysis Structure-Borne Noise Analysis This technique uses acoustics tools, typically 1/3 octave analysis. The results allow to identify and reduce the transmission to StructureBorne Noise.

Recto (extérieur) page 3 Recto (extérieur) page 6 (der) Ordering Information Flexible Connection > Mobile Analyzer > Distributed Conguration > Remote Access > PC Free Recorder > Online & Post Analysis > Multianalysis > Handling Any Transducers > Portable > Rugged > Real-Time > Large Channel Count Systems Data Acquisition > Recorder > Time Domain Analysis Rotating Analysis > Spectral Based Diagnostics > Torsion and Twist > Synchronous Order > Reciprocating Machines Structural Dynamics > FFT > ODS (Operating Deection Shape) > Modal analysis Noise Analysis > 1/3rd octave > Sound Intensity...