Results 11 to 20 of about 26,516 (262)

A simple permanent deformation model of rockfill materials

Water Science and Engineering, 2018
Existing experimental results have shown that using a semi-log linear relationship between the permanent volumetric strain and cyclic number underestimates the volumetric deformation of rockfill materials with a large cyclic number, and that the error ...
De-gao Zou, Jing-mao Liu, Xian-jing Kong, Chen-guang Zhou, Qing-po Yang   +4 more
doaj   +1 more source

Time series InSAR surface deformation monitoring in extremely difficult area based on track refining control points selection

Zhongguo dizhi zaihai yu fangzhi xuebao, 2021
The extremely difficult area has the characteristics of extremely rugged terrain, complex geographical environment and sparse permanent scatterers. Therefore, an improved SBAS-InSAR technology is designed to monitor the surface deformation. In this paper,
Jianping PAN, Fujiang DENG, Zhengxuan XU, Qiwen XIANG, Wenli TU, Zhanbao FU   +5 more
doaj   +1 more source

Deformation of elastomeric chains related to the amount and time of stretching

Dental Press Journal of Orthodontics, 2013
OBJECTIVE: To investigate a potential relationship between degree of stretching and resulting permanent deformation of elastomeric chains (ECs) as well as whether or not stretching time has any bearing on the degree of permanent deformation.
Denise Yagura, Paulo Eduardo Baggio, Luiz Sérgio Carreiro, Ricardo Takahashi   +3 more
doaj   +1 more source

Investigation on permanent deformation in steel-concrete composite beam bridge deck pavement under temperature-load coupling effect

Frontiers in Materials, 2023
Rutting is one of the common distresses observed in asphalt pavement, influenced by temperature and load conditions. To clarify the permanent deformation behavior of steel-concrete composite beam (SCCB) bridge deck pavement under temperature-load ...
Jing Yang, Liming Tan, Xiangyu Qi, Chenchen Zhang   +3 more
doaj   +1 more source

Factors Affecting on Permanent Deformation of Orthodontic Arch wires (An In vitro Study) [PDF]

Al-Rafidain Dental Journal, 2011
Aims: To measure the amount of permanent deformation of different types of orthodontic arch wires and to study the effect of both time interval and simulated oral environment on amount of permanent deformation of different types of nickel titanium and ...
Enas TM Al-Jwary
doaj   +1 more source

Permanent Deformation Characteristics of Coarse Grained Subgrade Soils under Train-Induced Repeated Load

Advances in Materials Science and Engineering, 2017
This paper presents the results of a laboratory experiment that aimed to characterize the permanent deformation behavior of coarse grained soils. To evaluate the effects of the cyclic stress amplitude, initial mean stress, and initial stress ratio on the
Xianzhang Ling, Peng Li, Feng Zhang, Yingying Zhao, Yan Li, Lingshi An   +5 more
doaj   +1 more source

Impact of Cyclic Loading on Shakedown in Cohesive Soils—Simple Hysteresis Loop Model

Applied Sciences, 2020
The objective of this study is to characterize the permanent deformations and to present a mathematical model that enables the prediction of permanent strain during cyclic loading. First, laboratory cyclic triaxial tests are conducted on sandy silty clay
Andrzej Głuchowski, Wojciech Sas
doaj   +1 more source

Evaluation of Permanent Deformation of Unmodified and Rubber-Reinforced SMA Asphalt Mixtures Using Dynamic Creep Test

Advances in Materials Science and Engineering, 2015
This paper presents the evaluation of permanent deformation of rubber-reinforced SMA asphalt mixtures by using dynamic creep test. The effect of trans-polyoctenamer as a cross-linking agent in permanent deformation of rubberized mixtures was also ...
Herda Yati Katman, Mohd Rasdan Ibrahim, Mohamed Rehan Karim, Nuha Salim Mashaan, Suhana Koting   +4 more
doaj   +1 more source

A NEW METHOD TO EXTRACT PERMANENT SCATTERERS [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
At present, time series InSAR technology has been widely used in surface deformation monitoring. The extraction of permanent scatterers is an important part, which is directly related to the accuracy of monitoring results.
Y. Kang, Y. Zhang, H. Wu
doaj   +1 more source

Permanent deformation characteristics of unsaturated subgrade soils under cyclic loading

Case Studies in Construction Materials
Excess permanent deformation of subgrade may cause critical rutting in pavements, and subsurface water significantly affects the accumulation of permanent deformation.
Xuanxuan Chu, Andrew Dawson, Nick Thom, Hongzhen Chen, Lei Qin   +4 more
doaj   +1 more source