Results 71 to 80 of about 3,825 (237)

Slit tube responses and rock fracture characteristics in slit charge blasting under high in situ stress

Deep Underground Science and Engineering, EarlyView.
In this article, the finite element method‐smoothed particle hydrodynamics adaptive coupling algorithm is applied to numerically simulate and analyze the dynamic response of the slit tube and the crack propagation under high in situ stress. The dynamic response of the slit tube mainly exhibits radial response in the vertical direction of the slit and ...
Zhe Sui, Liyun Yang, Lijun Wu, Chenxi Ding   +3 more
wiley   +1 more source

Biaxial Constitutive Relation and Strength Criterion of Envelope Materials for Stratospheric Airships

Aerospace
The performance upgrading of stratospheric airships hinges on breakthroughs in the mechanical properties of envelope materials. As a multi-layer composite, the envelope’s load-bearing layer exhibits orthotropic and nonlinear mechanical behaviors owing to
Zhanbo Li, Yanchu Yang, Rong Cai, Tao Li
doaj   +1 more source

Investigation of the failure characteristics of fissure tunnels under dynamic and static combinations

Deep Underground Science and Engineering, EarlyView.
This article aims to investigate the dynamic fracture response of fractured tunnel models under zero geological stress through physical experiments and numerical simulations. It further simulates the dynamic fracture characteristics of fractured tunnel models under geological stress ranging from 0 to 2.5 MPa using the numerical software AUTODYN ...
Peng Ying, Yu Ying, Xiaohan Li, Han Zhao, Kewei Yu, Zheming Zhu, Lei Zhou, Xibin Li   +7 more
wiley   +1 more source

A Prototype of Biaxial Extensometer to Measure Human Skin Elasticity

Česká Stomatologie a Praktické Zubní Lékařství, 2010
In our article we would like to present the results of joint research carried out at the Regional Hospital in Liberec and the Technical University of Liberec.
L. Dzan, Z. Lochman, L. Čapek, A. Lufinka   +3 more
doaj  

Failure characteristics and the energy criterion of rock with a through‐going joint under true‐triaxial unloading conditions: Insights from the DEM model

Deep Underground Science and Engineering, EarlyView.
The rock failure mode is significantly influenced by the contributing factors, such as the joint inclination, the initial confining pressure, and the unloading point. We found six typical rock failure modes after a large number of numerical tests. Abstract Excavation unloading damages rock masses, with preferential failure along geological defects in ...
Fei Liu, Changhui Liang, Sijia Liu, Yongjun Zhang, Luo Wang   +4 more
wiley   +1 more source

Development of a biaxial tensile test fixture for reinforced thermoplastic composites

Polymer Testing, 2007
A new mechanism for biaxial tension tests was developed for loading an in-plane reinforced composite laminate or any injection-molded polymeric specimen simultaneously in two principal directions. This mechanism can be adapted to any uniaxial tension test machine and, thereby, it can reduce the cost of conducting tests on expensive dedicated machines ...
Naresh Bhatnagar, Rakesh Bhardwaj, Palani Selvakumar, Mathias Brieu   +3 more
openaire   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

A Review of Black Phosphorus‐Based Materials: From Preparation Strategies to Characterization Techniques

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The structure, properties, preparation methods, and characterization techniques of BP. As a typical 2D layered material, black phosphorus (BP) demonstrates exceptional promise in various fields, particularly in energy storage for alkali metal‐ion batteries. However, its distinctive structure and properties, together with the compositional complexity of
Yunqing Wang, Jinzhi Lyu, Yongxiang Li, Yubing Wang, Xiangming Cui, Jianan Wang, Banglong Wan, Wei Yan   +7 more
wiley   +1 more source

Novel PTFE/PI Nanofibrous Composite Membranes Enabling High‐Flux Desalination and Durable Anti‐Scaling in Membrane Distillation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Schematic illustration comparing the MD performance of pure PTFE NFMs and PTFE/PI NFMs. Polytetrafluoroethylene (PTFE) membranes are widely recognized for their low surface energy and strong resistance to salt accumulation in membrane distillation (MD) processes.
Yuan Liu, Guangda Wang, Xiaoying Wei, Xuefeng Zhu, Rujia Zou, Zheyi Meng, Liping Zhu, Meifang Zhu   +7 more
wiley   +1 more source

Experimental and Modeling Study of Collagen Scaffolds with the Effects of Crosslinking and Fiber Alignment

International Journal of Biomaterials, 2011
Collagen type I scaffolds are commonly used due to its abundance, biocompatibility, and ubiquity. Most applications require the scaffolds to operate under mechanical stresses.
Bin Xu, Ming-Jay Chow, Yanhang Zhang
doaj   +1 more source