Influence of cyclic moisture loading and unloading on the mechanical properties of alumina oxide granules
Influence of cyclic moisture loading and unloading on the mechanical properties of alumina oxide granules
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循环加卸湿对氧化铝颗粒力学性能的影响
DOI：
10.1007/s10035-016-0610-8
复制
发表时间：
2016
期刊：
影响因子：
2.4
通讯作者：
J. Tomas
中科院分区：
文献类型：
--
作者：
P. Müller;A. Russell;J. Bergstedt;J. Tomas
通过单轴压缩试验研究了循环水分加卸载对粒料材料行为和力学性能的影响。为此目的，颗粒已经用两种不同类型的水分加载和卸载循环进行了处理。第一种循环类型包括在气候室中使用湿空气润湿颗粒，并完全浸入水浴中，然后在干燥室中干燥。第二种循环类型仅包括在气候室中润湿颗粒，然后在干燥室中干燥。在湿空气处理过程中，颗粒的机械性能随含水量的增加而降低。力-位移曲线变平坦，断裂力、断裂强度和比断裂能显着降低。通过浸入水浴中的附加处理对机械性能具有进一步的但不太强烈的影响。随后在干燥室中干燥颗粒以实现再生时，初始状态只能部分恢复。随着水分加载和卸载循环次数的增加，由于结构的非再生性损伤，颗粒强度持续下降。此外，可以观察到颗粒尺寸与损伤之间的显著关系。
The influence of cyclic moisture loading and unloading on the material behavior and the mechanical properties ofgranules has been extensively studied by uniaxial compression tests. For this purpose, the granules have been treated with two different types of moisture loading and unloading cycles. The first cycle type consists of the moistening of granules in a climate chamber using wet air and complete immersion in a water bath followed by drying in a drying chamber. The second cycle type consists only of the moistening of granules in a climate chamber followed by drying in a drying chamber. During treatment with wet air, the mechanical properties of granules decrease with increasing moisture content. The force–displacement curves flatten and the fracture force, the fracture strength as well as the specific fracture energy significantly decreases. Additional treatment by immersion in a water bath has a further, but, less intense influence on the mechanical properties. On subsequent drying of granules in a drying chamber in order to achieve regeneration, the initial condition can only be partially restored. With increasing number of moisture loading and unloading cycles, a continuous decrease in the strength of granules takes place due to non-regenerative damage of the structure. Furthermore, a significant relationship between granule size and damage could be observed.
Zeolith 4A-Granulaten 的 Druck‐ und Stoßvorgangs 模拟
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
P. Müller;S. Antonyuk;J. Tomas
通讯作者：
J. Tomas
影响因子：
2.4
作者：
P. Mueller;S. Antonyuk;M. Stasiak;J. Tomas;S. Heinrich
通讯作者：
P. Mueller;S. Antonyuk;M. Stasiak;J. Tomas;S. Heinrich
由于循环水分加载和卸载，沸石颗粒逐渐弱化
影响因子：
5.2
作者：
P. Müller;A. Russell;J. Seidenbecher;J. Tomas
通讯作者：
J. Tomas