Hydrostatic shock

Hydrostatic shock

Structure and Material Properties of Soft Tissues

Published in Z. Yang, Finite Element Analysis for Biomedical Engineering Applications, 2019

The major role of the IVD is to work as a load-bearing structure and absorb energy when the spine is under compression. The compressive axial loading on the disc compresses the nucleus pulposus, and the intradiscal pressure transforms to the annulus fibrosus, causing it to swell in the radical direction like “barreling” [6]. The annulus absorbs most of the barreling of the disc via collagen network elongation. In addition, a large amount of viscous water in the disc allows it to act as a hydrostatic shock absorber.

Corrosion of 2024 alloy after ultrasonic impact cladding with iron

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Journal Information

Published in Surface Engineering, 2018

M. A. Vasylyev, B. N. Mordyuk, S. I. Sidorenko, S. M. Voloshko, A. P. Burmak

The specimen was placed in a socket made in the hardened steel holder and underwent the quasi-hydrostatic shock compression during each impact. The estimated strain rate ranges 0.1–1.5 s−1. During the UIT process lasted for 250 s about 5·105 impacts induce severe plastic deformation of the specimen surface. During the multiple impactions, the pin tip was also deformed sequentially ‘spreading’ over the specimen surface (Figure 1(b)). Two series of specimens were processed either in the ambient air (air-UIT) or in the argon environment (argon-UIT). In the latter case, a special sealed chamber filled with gaseous argon was used to prevent the surface oxidation at UIT [16].

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Structure and Material Properties of Soft Tissues

Corrosion of 2024 alloy after ultrasonic impact cladding with iron