Results 131 to 140 of about 8,150 (236)

Numerical investigation of soil parameter effects on the axial uplift bearing capacity of novel photovoltaic circular helicoid piles. [PDF]

Sci Rep
Wang K, Zhang R, Yasufuku N, Xu G.
europepmc   +1 more source

Influence of Stress Larger than Preload but Acted for Shorter Duration in Tangent Modulus Method : A New Method to Measure In-situ Rock Stress

Influence of Stress Larger than Preload but Acted for Shorter Duration in Tangent Modulus Method : A New Method to Measure In-situ Rock Stress
Influence of stress concentration at rock sampling on the in-situ rock stress value estimated by tangent modulus method, which is one of the oriented core methods for in-situ rock stress measurement, was experimentally investigated. Cylindrical specimens of Kimachi sandstone were preloaded at 30% UCS for 24 hour simulating in-situ stress and then a ...
openaire  

Optimization of Blasting‑Induced Roof Cutting Parameters in Key Stratum and Its Application in Gob‑Side Entry Retention Technology

Energy Science &Engineering, EarlyView.
This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
wiley   +1 more source

Experimental study on the compaction deformation evolution and energy dissipation characteristics of graded broken rock mass. [PDF]

Sci Rep
Peiyun X, Wuyi Y, Shugang L, Haiqing S, Xiaolong Z, Xiaoxu C.   +5 more
europepmc   +1 more source

Damage Characteristics and Stress Distribution Law of Overburden Rock in Multiple Mining of Close Coal Seams

Energy Science &Engineering, EarlyView.
This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu, Lei Guo, Zedong Sun, Xiaowei Wu, Nan Zhang   +4 more
wiley   +1 more source

Impact of Cold Radiofrequency Air Plasma Treatment on the Bulk Properties of Polypropylene Films. [PDF]

Materials (Basel)
Gilevich A, Gendelman O, Mikhlin Y, Shoval S, Bormashenko E.   +4 more
europepmc   +1 more source

Effect of Ammonium Polyphosphate/Silicate Content on the Postfire Mechanics of Epoxy Glass‐Fiber Composites Using Facile Chocolate Bar‐Inspired Structures

Fire and Materials, Volume 49, Issue 3, Page 329-346, April 2025.
ABSTRACT This study investigates the postfire mechanical properties of epoxy glass‐fiber reinforced composites (EP GFRCs) using increasing concentrations of ammonium polyphosphate (APP) and inorganic silicate (InSi) to modify the char and fire residue.
Sruthi Sunder, Maria Jauregui Rozo, Sneha Inasu, Dietmar Meinel, Bernhard Schartel, Holger Ruckdäschel   +5 more
wiley   +1 more source

State-Driven Adaptive Deep-Unfolded PGA Algorithm for Hybrid Beamforming in MIMO-JCAS Systems. [PDF]

Sensors (Basel)
Liu F, Wang Z, Gao Y, Yao Z.
europepmc   +1 more source

Monolithic Framework to Simulate Fluid‐Structure Interaction Problems Using Geometric Volume‐of‐Fluid Method

International Journal for Numerical Methods in Fluids, EarlyView.
A three‐dimensional fluid‐structure interaction (FSI) framework is developed using the geometric volume‐of‐fluid (VOF) interface capturing method and applied to assess largescale turbulent FSI interactions. The monolithic FSI framework is extensively validated, and despite the discontinuities across the interface, the FSI framework delivers stable and ...
Soham Prajapati, Ali Fakhreddine, Krishnan Mahesh   +2 more
wiley   +1 more source

Characteristics of crack network catastrophe in highly weathered mudstone under hydro-mechanical disturbance: a cross-scale damage constitutive framework. [PDF]

Sci Rep
Cui H, Wan W, Ma B, Guo H, Wu H.
europepmc   +1 more source