ROUGHNESS

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Prediction of joint roughness coefficient via hybrid machine learning model combined with principal components analysis
《Journal of Rock Mechanics and Geotechnical Engineering》2025年第4期2291-2306,共16页Shijie Xie Hang Lin Tianxing Ma Kang Peng Zhen Sun 
funding from the National Natural Science Foundation of China (Grant No.42277175);the pilot project of cooperation between the Ministry of Natural Resources and Hunan Province“Research and demonstration of key technologies for comprehensive remote sensing identification of geological hazards in typical regions of Hunan Province” (Grant No.2023ZRBSHZ056);the National Key Research and Development Program of China-2023 Key Special Project (Grant No.2023YFC2907400).
Joint roughness coefficient(JRC)is the most commonly used parameter for quantifying surface roughness of rock discontinuities in practice.The system composed of multiple roughness statistical parameters to measure JRC...
关键词：Rock discontinuities Joint roughness coefficient(JRC) Roughness characterization Principal components analysis(PCA) Machine learning 
Examining theoretical applicability of displacement discontinuity model to wave propagation across rock discontinuities
《Journal of Rock Mechanics and Geotechnical Engineering》2025年第4期2146-2158,共13页Yan Zhang Jianbo Zhu Haohao Xu Dongya Han Weiyue Bao 
supported by the National Key R&D Program of China (No.2022YFC3004602);the National Natural Science Foundation of China (No.52325404);the Shenzhen Science and Technology Program (No.JCYJ20220818095605012).
Rock discontinuities such as joints widely exist in natural rock masses,and wave attenuation through rock masses is mainly caused by discontinuities.The displacement discontinuity model(DDM)has been widely used in the...
关键词：Displacement discontinuity model Wave propagation 3D printing Joint stiffness Joint roughness 
An enhanced flexible triboelectric tactile sensor for material classification and roughness recognition
《Science China(Technological Sciences)》2025年第4期94-104,共11页Jingchao YUAN Jian HE Junbin YU Shuai SHI Yanxiang CHANG Xiujian CHOU 
supported by the National Key R&D Program of China(Grant No.2019YFE0120300);the National Natural Science Foundation of China(Grant Nos.62171414,52175554,52205608,62171415,62001431);the Fundamental Research Program of Shanxi Province(Grant Nos.20210302123059,20210302124610);the Program for the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(Grant No.2020L0316)。
Tactile sensors are one of the core components for intelligent robots to realize human-like tactile sensing functions.For the application scenarios of material classification and roughness recognition,an enhanced flex...
关键词：single-electrode triboelectric nanogenerator tactile sensor SELF-CLEANING VGG network material classification roughness recognition 
Spatiotemporal Analysis of Pavement Roughness Using Connected Vehicle Data for Asset Management
《Journal of Transportation Technologies》2025年第1期1-16,共16页Jijo K. Mathew Jairaj Desai Rahul Suryakant Sakhare Jeremy Hunter Darcy M. Bullock 
Pavement condition monitoring and its timely maintenance is necessary to ensure the safety and quality of the roadway infrastructure. The International Roughness Index (IRI) is a commonly used measure to quantify road...
关键词：Connected Vehicles PAVEMENT Pavement Quality ROUGHNESS IRI Dashcam 
Dynamic slip behavior and off-fault damage of tension-induced fractures constrained by different grain sizes in granite
《Journal of Rock Mechanics and Geotechnical Engineering》2025年第3期1539-1554,共16页Feili Wang Fanzhen Meng Muzi Li Qijin Cai Zhufeng Yue Zhanguo Xiu Zaiquan Wang 
the National Natural Science Foundation of China(Grant No.52309130);the Natural Science Foundation of Shandong Province(Grant No.ZR2022QD004).
The mineralogy and texture of granite have been found to have a pronounced effect on its mechanical behavior.However,the precise manner in which the texture of granite affects the shear behavior of fractures remains e...
关键词：Granite fractures Mineral grain size ROUGHNESS STICK-SLIP Microcracking behavior Crack density 
Response properties of geometries of coal penetrating fracture on seepage behavior
《International Journal of Mining Science and Technology》2025年第2期191-211,共21页Penghua Han Kai Wang Jiewen Pang Xiaofeng Ji Cun Zhang 
supported by the National Natural Science Foundation of China (Nos. 52474161, and 52404093);Fundamental Research Program of Shanxi Province (Nos. 202303021222168 and 202203021221143);Taiyuan University of Science and Technology Scientific Research Initial Funding (No. 20242103);the Postdoctoral Research Foundation of China(No. 2023M733778)。
The fracture surfaces of coal-rock masses formed under mining-induced stress generally exhibit complex geometries, and the fracture geometry is one of the primary factors affecting the seepage characteristics of coal-...
关键词：Coal penetrating fracture ROUGHNESS GEOMETRIES Seepage characteristics 
Effects of high temperature and thermal cycles on fracture surface's roughness of granite:An insight on 3D morphology
《Journal of Rock Mechanics and Geotechnical Engineering》2025年第2期810-826,共17页Qixiong Gu Zhen Huang Kui Zhao Wen Zhong Li Liu Xiaozhao Li Yun Wu Ma Dan 
funding support from the National Natural Science Foundation of China(Grant No.52274082);the Program of Qingjiang Excellent Young Talents,Jiangxi University of Science and Technology(Grant No.JXUSTQJBJ2020003);the Innovation Fund Designated for Graduate Students of Jiangxi Province(Grant No.YC2023-B215).
The roughness of the fracture surface directly affects the strength,deformation,and permeability of the surrounding rock in deep underground engineering.Understanding the effect of high temperature and thermal cycle o...
关键词：GRANITE Thermal cycles High temperature Fracture surface roughness ANISOTROPIC Thermal damage 
Modeling of the roughness effect in normal contact of deformable solids
《Friction》2025年第1期183-194,共12页Irina G.Goryacheva Anastasiya A.Yakovenko 
supported by the Ministry of Science and Higher Education within the framework of the Russian State Assignment under Contract No.124012500437-9.
This paper presents a two-scale analytical approach to study the normal contact of deformable bodies,taking into account their surface roughness.This approach makes it possible to evaluate the influence of roughness o...
关键词：contact problem ROUGHNESS two-scale modeling localization method ELASTICITY VISCOELASTICITY 
Experimental study on the acoustic roughness spectrum of high-speed railway rails
《Railway Sciences》2024年第6期704-716,共13页Li Han Xiangyang Wu Qing Yu Lanhua Liu Chenge Wang 
supported by multiple funding sources,including the China State Railway Group Co.,Ltd.’s Science and Technology Development Plan(Project Code:P2022Z003).
Purpose–This study aims to investigate the acoustic roughness of rails on China’s high-speed railways,with a focus on short-wavelength irregularities(less than 80 cm),which are known to significantly contribute to n...
关键词：High-speed railway RAIL Acoustic roughness Short-wavelength irregularity 
Changes in shear properties of granite fractures subjected to cyclic heating and air-cooling treatments
《Journal of Rock Mechanics and Geotechnical Engineering》2024年第12期4925-4943,共19页Guo-Hua Zhang Zhao-Yang Han Sheng-Lian Li Lu-Zhao Dan Feng Xiong Zhi-Cheng Tang 
supports from the Natural Science Foundation of China(Nos.42177165 and 42277173);the National Key Research and Development Projects of China(No.2021YFB2600402)。
The effects of cyclic heat treatments on the fracture shear behaviors are rarely reported.To enhance our understanding,granite fractures having almost the same roughness were first exposed to cyclic heating at 400C an...
关键词：Granite fracture Cyclic thermal treatment Roughness degradation Shear behavior Thermodynamic mechanism 
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