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相关概念视频

Temperature Dependent Deformation01:12

Temperature Dependent Deformation

In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added together...
Measurements of Strain01:27

Measurements of Strain

Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain gauge...

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相关实验视频

Updated: Jul 12, 2026

Laser-Induced Fluorescence Emission (L.I.F.E.) as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
13:38

Laser-Induced Fluorescence Emission (L.I.F.E.) as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

通过双色激光在长谷火山火山口范围观察到的变形速率下降.

M F Linker, J O Langbein, A McGarr

    Science (New York, N.Y.)
    |April 11, 1986
    PubMed
    概括

    在1983年的地震之后,长谷火山口的变形放缓了. 地测测量显示延伸率降低,表明火山活动减少和潜在的岩注入.

    科学领域:

    • 地质物理学 地质物理学
    • 火山学 火山学是一门学科.
    • 地质测量是指地质测量.

    背景情况:

    • 长谷火山口在1983年1月经历了显著的地震性.
    • 后地震变形,特别是在南沟和复苏的圆顶,是显著的.
    • 了解正在进行的变形对于评估火山风险至关重要.

    研究的目的:

    • 为量化1983年地震群之后长谷火山口的变形速度.
    • 分析地面运动的空间和时间模式.
    • 为了建模导致观察到的变形的地下过程.

    主要方法:

    • 在地理测量网络中进行了重复的双色激光测距测量.
    • 数据收集时间从1983年6月到1984年11月.
    • 分析了基线延伸和剪切变形.

    主要成果:

    • 从1983年中期到1984年中期,基线延长率 (2-3倍) 显著下降.
    • 面积扩张是占主导地位的变形信号,在1983年夏天达到5ppm/年的峰值率.
    • 剪切变形也被确定在南沟内.

    结论:

    更多相关视频

    Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
    11:47

    Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

    Published on: February 27, 2013

    相关实验视频

    Last Updated: Jul 12, 2026

    Laser-Induced Fluorescence Emission (L.I.F.E.) as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
    13:38

    Laser-Induced Fluorescence Emission (L.I.F.E.) as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

    Published on: October 26, 2019

    Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
    11:47

    Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

    Published on: February 27, 2013

    • 观察到的变形表明,1983年地震活动后火山动荡的速度正在下降.
    • 变形模式与在复苏的圆顶下面的浅岩注入一致.
    • 在南的浅,垂直断层上的右侧滑动也导致了变形.