Results 61 to 70 of about 40,119 (258)

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

CONTEMPORARY GEODYNAMICS OF THE GAROMAI ACTIVE FAULT (SAKHALIN ISLAND)

Геодинамика и тектонофизика, 2019
In the northern Sakhalin Island, the tectonic activity of the fault zones is a potential threat to the industrial infrastructure of the petroleum fields.
N. F. Vasilenko, A. S. Prytkov
doaj   +1 more source

GROUND SURFACE LOADING MODEL TEST ON DEFORMATION BEHAVIOR OF TUNNEL LINING

Doboku Gakkai Ronbunshu, 2003
既設トンネル上部の近接盛士や構造物基礎の設置によるトンネル覆工への影響評価法を確立することを目的として, 二次元平面ひずみの載荷・除荷模型実験装置を用いて, 部分載荷実験を行った. 実験の対象地盤は, 初期剛性が大きく粘着力cが卓越する低強度モルタル地盤と, 初期剛性が小さく内部摩擦角φが卓越する乾燥砂地盤の2種類である.実験の結果, 部分的な上部載荷による地盤の非線形な変形挙動と, この地盤挙動との相互作用の結果として生ずるトンネル覆工の変形挙動の特性が明らかになった. さらに, FEMによる実験結果のシミュレーションを行い, 影響予測の実務に適した地盤およびトンネル覆工のモデル化の考え方を提案した.
Yoshiyuki KOJIMA, Kazuyuki YOSHIKAWA, Kazuhide YASHIRO, Tatsuya NOMA, Toshihiro ASAKURA, Takashi TUCHIYA   +5 more
openaire   +2 more sources

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Ground Deformation of Shield Tunneling through Composite Strata in Coastal Areas

Buildings
In order to mitigate ground deformation during shield construction in both upper soft and lower hard strata of coastal areas, a numerical simulation was executed.
Xiong Wu, Jiangbo Xu, Shaowei Wang, Peng Sha, Zemin Han, Xinyu Chen, Sheng Shu, Wei Qiao, Xianglong Zeng   +8 more
doaj   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Research on risk assessment technology for transmission lines in mining affected areas

AIP Advances
This article studies the correlation between ground surface deformation of transmission lines in mining affected areas and various geological and human factors, and it constructs the corresponding numerical models.
Zhumao Lu, Siqing Xu, Shuai Wang, Xiaokai Meng, Fei Hou   +4 more
doaj   +1 more source

EZ-InSAR: An easy-to-use open-source toolbox for mapping ground surface deformation using satellite interferometric synthetic aperture radar. [PDF]

Earth Sci Inform, 2023
Hrysiewicz A, Wang X, Holohan EP.
europepmc   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Deformation Behavior of Diaphragm Walls and Ground Surface During Excavation of a Circular Deep Foundation Pit Considering Coupled Dewatering and Recharge Effects

Buildings
Few studies have focused on the deformation of ultra-deep circular foundation pits under the combined effects of dewatering and recharge. Therefore, a case of an ultra-deep circular foundation pit in a soft soil area was selected to investigate the ...
Yanbin Xue, Fengfan Chen, Jian Wu, Jiayao Liu, Lei Huang, Bin Liu, Chunlong Bi, Tianyu Xu, Yongwei Li, Dongjie Li   +9 more
doaj   +1 more source