Compression waves become shock waves

When the metallic tube was inserted into the foam, the absorption rate increased by 12% and the specific energy absorption increased by 48.8%. The metallic tube-enhanced PMI foam displayed a stronger elasticity than the normal foam. IPSIIS is planning to establish a production unit for high-temperature-resistant mineral foam in the city of Frameries, Wallonia, as part of its circular economy strategy.

The Walloon government has recently adopted a circular economy deployment strategy, known as Circular Wallonia. By 2030, the objective is to reduce the demand for raw materials by 25 percent, and to increase the number of jobs in the region that contribute to the circular economy by 2025. The government of Wallonia has allocated 113 million euros to the construction and buildings sector to develop innovative methods.

The present invention relates to a structure that can absorb electromagnetic waves through a layered structure. The layered structure of a foam sandwich can greatly increase the mass of electromagnetic wave absorbent.

In addition, this structure Wholesale China polymethacrylimide Suppliers can be made strong enough to prevent the transmission of electromagnetic waves. The present invention is particularly useful for high-frequency wave-absorbing applications. It also provides a method of preparing the foam sandwich. The deformation of a foam is limited to its plateau domain, which is the region of the compressive stress-strain relationship of the foam.

The pressure in the foam's plateau domain is high and nearly constant. In this region, compression waves become shock waves. This process is called shock amplification. In some experiments, the deformation of a foam is limited to one dimensional space, but not the other.

Compression waves become shock waves

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