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Updated: Jun 25, 2026

Blast Quantification Using Hopkinson Pressure Bars
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Blast Quantification Using Hopkinson Pressure Bars

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一个实验室的观点,加速地震前的准备过程,以及对前震检测能力的影响

Thomas H W Goebel1, Valerian Schuster2, Grzegorz Kwiatek2

  • 1University of Memphis, Center for Earthquake Research and Information, Memphis, TN, USA. thgoebel@memphis.edu.

Nature communications
|July 3, 2024
PubMed
概括

由于高流体压力和低断层异质性,岩活动的持续时间会缩短. 这导致了更快的滑动加速和更少,更像地震的声学排放,特别是在未成熟的断层上.

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Non-destructive Tests for Concrete Strength01:12

Non-destructive Tests for Concrete Strength

The rebound hammer test, also known as the Schmidt hammer test, is a non-destructive technique for evaluating the hardness of concrete and, indirectly, the strength of concrete. It operates on the principle that the rebound of a spring-driven mass from a concrete surface correlates to the surface's hardness. The device comprises a mass within a tubular housing, a spring mechanism, and a plunger that strikes the concrete. Upon release, the energy imparted to the mass by the spring causes it to...