High-speed strain monitoring in ship structures

TNO has developed a new interrogation/demultiplexing system for Fiber Bragg Grating (FBG) sensor arrays. This potentially low cost system combines a high-speed readout frequency with absolute measurement for all the Fiber Bragg Grating sensor channels. This combination is of particular interest for the detection of strain changes, which is the main cause of hairline cracks that develop in metal structures (e.g., a ship’s hull). A patent is pending for this system.

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References

Order of frictions and stiffnesses…

For lumped systems consisting of different frictions and stiffnesses, there has been confusion in literature about hysteresis curves and virtual play for many decades.

Make it clean

In mid-April, the second edition of the Manufacturing Technology Conference and the fifth edition of the Clean Event were held together, for the first time, at the Koningshof in Veldhoven (NL).

Bringing particles to light

Particle contamination monitoring and cleanliness control are fundamental to micromanufacturing processes across diverse industries to achieve cost-effective production of high-quality and reliable microscale devices and components.