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    LAMEF
    UNIDADE EMBRAPII

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    CHÂTEAU

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    LAMEF
    UNIDADE EMBRAPII

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    FLEXIBLE RISERS

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    FLEXIBLE RISERS

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    FRICTION WELDING MACHINES

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    Floating hoses

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INSPECTION AND MONITORING

Structural integrity monitoring systems have been seeing an increase in importance, especially in the oil and gas sector, due to the expansion of exploratory and processing activities to increasingly challenging environments from the operational point of view. These new frontiers lead to innovations in the areas of engineering projects and new materials, which require equally fast advances in the field of inspection and non-destructive testing technologies. The onset of operation with intelligent structures, which can diagnose their own integrity, demands a combination of expertises in the areas of inspection technologies, electronics, mechanics, automation, and others. At LAMEF we can supply these demands, by performing thorough technical studies in the areas of acoustics, vibrations, ultrasonics, electromagnetics, and stress analysis.


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ACOUSTICS AND VIBRATION (INCLUDING MODAL TESTING)

LAMEF has experience in the development of structural integrity monitoring systems based on acoustics and vibrations. Subsea acoustical systems for detection of events such as failures or valve signatures are under development. Measurements of acoustic parameters in industry and buldings are also performed.

Vibration analysis and modal testing are also routinely carried out for industry in general.

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Stress analysis (including Bragg grating fiber optics)

LAMEF has a complete infrastructure for production of Bragg gratings in fiber optics for measurement of strain, pressure, temperature, and other properties, even in challenging environments.

LAMEF has specialized in field instrumentation for stress analysis using strain-gauges, and also modelling for stress distributions in components and structures using the finite element method.

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Automation

The use of robots which allow mapping or non-destructive inspection of structures is a field on the rise. If an operator can electronically control the geometric positioning of transducers with a good reliability, the interrogation of large and difficult acess structures can be done in a simple, fast and accurate way.

LAMEF has in the past developed inspection tools for suspended pipelines, storage tanks, and ship hulls.

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Electromagnetics (Eddy currents, Magnetic methods)

LAMEF develops customized eddy current, AC potential drop, Barhausen noise, and micromagnetic sensors for characterization and inspection of steels and non-ferrous alloys.

LAMEF also develops EMATs (electomagnetic acoustic sensors) for ultrasound generation, and is currently developing a guided wave system for high temperatures.

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Signal processing

The proper analysis of the data generated by inspection techniques can provide statistic confidence bands and the detection of patterns, as well as calibration curves and classification of the data in groups. This may allow prediction of future behaviours and active controll of the process parameters in order to generate a better response or results for each test.

Techniques such as 2D Fourier analysis of ultrassonic signals and Neural Networks implementation of accelerometer data have already been used in projetcs here at the laboratory.

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Design and development of customized sensors, electronics, and software

Some applications require more capabilities or access to control of input/output parameters that are not currently available in commercial systems. Historically LAMEF has developed and characterized transducers for Eddy Currents, EMATs and Guided Waves that were customized for specific applications such as inspection of composites and ultrassonic inspection of high temperature structures.

Customized specific electronics to control and modify signal generation, gain control, filter implementation and channel switch capabilities can be integrated with a stand-alone dedicated software developed in MATLAB® or LABVIEW®.

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Flexible risers

LAMEF has developed monitoring systems for flexible risers, based on acoustic and vibration measurements, positioning systems, and advanced electromagnetic methods

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Computer simulation

Computer simulation of the propagation of ultrasonic waves in components with complex geometry and frequency response of customized sensors have been successfully studied and implemented here in LAMEF by the use of finite element softwares.

In the area of magnectic fields and sensor development, the COMSOL® software has provided interesting solutions to the requirements of projects.

In order to run such extensive and demanding models, LAMEF has two DELL® servers with excellent performances that allow results to be generated within a couple of hours.

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Ultrasound (Guided waves, Phased array, Conventional UT, TOFD)

LAMEF has developed systems for monitoring of rigid and composite pipelines which are based on guided waves, ultrasound, and acoustic emission. These systems are totally self designed, including sensors, electronics, signal processing, and software.

In composite pipelines, a software for quality evaluation of adhesive joints between pipes is currently under filed testing. LAMEF also develops signal processing techniques and inspection procedures for phased array ultrasound, and has great experience in conventional UT and TOFD inspection.