Results 91 to 100 of about 1,220,037 (212)

Failure Characterization of Al-Zn-Mg Alloy and Its Weld Using Integrated Acoustic Emission and Digital Image Techniques

Metals
The three-point bending damage process of an A7N01 aluminum alloy body material and weld seam in an electric multiple unit train was monitored using acoustic emission (AE) and digital image technology.
Ronghua Zhu, Dazhao Chi
doaj   +1 more source

Research on Damage Evolution Mechanism of Layered Rock Mass under Blasting Load

Buildings
Rock mass consists of many discontinuities, such as faults, joints, etc., and layered joints are a common kind of rock mass structure. The joints affect the stress wave propagation, and blasting is an economical and efficient rock fragmentation method ...
Lixiang Xie, Jiahao Zhang, Dongyu Yang, Yanjun Qi, Linjun Wu, Hongyun Chen   +5 more
doaj   +1 more source

Habitability around F-type Stars

, 2014
We explore the general astrobiological significance of F-type main-sequence stars with masses between 1.2 and 1.5 Msun. Special consideration is given to stellar evolutionary aspects due to nuclear main-sequence evolution.
Cuntz, M., Jack, D., Olvera, C. M. Guerra, Sato, S., Schroeder, K. -P.   +4 more
core   +1 more source

The development of creep damage constitutive equations for low Cr-Mo alloy steel and its weldment at low stress [PDF]

, 2013
The ultimate objective of this research project is to develop creep damage constitutive equations for low Cr-Mo alloy and its weldment under low stress (0.2-0.4 yield stress,σ_Y).
Lu, Zhongyu, Xu, Qiang, Xu, Qihua
core  

Damage Behaviour of Quasi-Brittle Composites: Mathematical and Computational Aspects

Applied Sciences
In the present paper, an evaluation of the damage behaviour of quasi-brittle composites exposed to mechanical, thermal, and other loads is studied by means of viscoelastic and/or viscoplastic material models, applying some non-local regularisation ...
Jiří Vala, Jiří Tomáš
doaj   +1 more source

Meshless Numerical Simulation on Dry Shrinkage Cracking of Concrete Piles for Offshore Wind Power Turbine

Buildings
Against the backdrop of the global energy transition, offshore wind power has undergone rapid development. As a vital component of offshore wind power infrastructure, dry shrinkage cracking in concrete piles poses a significant threat to the safe and ...
Cong Hu, Jianfeng Xue, Taicheng Li, Haiying Mao, Haotian Chang, Wenbing Zhang   +5 more
doaj   +1 more source

Molecular Dynamics Simulation of Nano-Defects on Fused Silica Surface Induced by Low-Temperature Plasma Cleaning

Molecules
Low-temperature plasma cleaning technology has been widely used to clean various optical components precisely. After the complete removal of organic contaminants from fused silica surfaces through plasma cleaning, continuous plasma irradiation can lead ...
Yuhai Li, Yilan Jiang, Laixi Sun, Qiang Yuan, Peng Zhang, Qingshun Bai, Xiaodong Yuan   +6 more
doaj   +1 more source

Cyclic impact experimental study on the mechanical behavior of sandstone subjected to freeze-thaw cycles

Frontiers in Earth Science
The sandstone in open-pit coal mines frequently experiences freeze-thaw cycles and cyclic impact loads. To investigate the strength, deformation, and damage evolution laws of freeze-thaw sandstone under cyclic impacts, cyclic impact experiments was ...
Li Tao, Wu Peng, Hu Shanchao, Wu boyuan, Chen Zhanqing   +4 more
doaj   +1 more source

Experimental and Numerical Study of Damage Evolution and Fracture Characteristics of Three-Layer Composite Rocks Under Dynamic Loading

Applied Sciences
In order to study the damage evolution and fracture characteristics of rock with different composite modes in three layers under dynamic loading, rock specimens with different composite modes were made by using three materials: sandstone, marble and ...
Huajun Xue, Yanbing Wang, Weihong Yang, Pengda Zhang, Hui Xiao, Yaoyao Zhang, Yuanjian Zhang   +6 more
doaj   +1 more source

Evolutionary patterns of cracking and damage due to anti-reflection of controllable shock waves at the roof of loose and low-permeability coal seams

Meitan xuebao
Controllable shockwave technology, as a new type of coal seam penetration enhancement technology, has the characteristics of safety and reliability, high energy utilisation, and the number of impacts and energy can be controlled, etc.
Guodong QIAO, Zegong LIU, Kui GAO, Yongmin ZHANG, Youzhi ZHAO, Yongyuan LI, Shigui FU, Jianyu ZHANG, Zi WANG, Shuai YANG, Xin ZHANG   +10 more
doaj   +1 more source