Investigation of the dynamic strain responses of sandstone using multichannel fiber-optic sensor arrays

doi:10.1016/j.enggeo.2016.08.008

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Investigation of the dynamic strain responses of sandstone using multichannel fiber-optic sensor arrays
	Yang, Duoxing 4; Li, Qi2 ; Sun, Yankun 2,3; Sun, An 1; Fan, Chengkai 2,3
刊名	ENGINEERING GEOLOGY
	2016
卷号	213 页码:1-10
关键词	Fiber Bragg grating (FBG) Multichannel sensor arrays Uniaxial compression testing (UCT) Sandstone Strain response Damage
ISSN号	0013-7952
DOI	10.1016/j.enggeo.2016.08.008
英文摘要	In the process of rock mechanical experiments, strain-response measurement is a most fundamental and most essential procedure for geomechanical researchers. The main objective of this paper is to point out the feasibility and the superiority of the application of a novel multichannel fiber Bragg grating (FBG) sensor arrays for dynamic strain-response measurements of cylindrical specimen subjected to uniaxial compression. The principle, design, and embedment of multichannel FBG sensors used in the experiment are briefly described. To fully monitor the strain history of the sandstone cylinder in uniaxial compression, six circumferential FBG sensors, four lateral FBG sensors, linear variable differential transformers (LVDT) built-in machine have been utilized for spatially monitoring small radial and axial strains along the height of the specimen, respectively. The experimental results indicate that the proposed FBG sensors can successfully provide a full-field view of the surface strains, as well as detect the potential crack locations within the specimen, and strains measured by multichannel FBG sensors are in good agreement with the results of LVDT, especially in the axial strains. Hence, it could be inferred that multichannel FBG sensor arrays are capable of measuring dynamic strain responses of sandstone specimen in multistage compression, which would greatly strengthen experimental basis for further application and theoretic research of in-situ field monitoring. (C) 2016 Elsevier B.V. All rights reserved.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000386988800001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3952]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Southeast Univ, Int Inst Urban Syst Engn 2.Chinese Acad Sci, IRSM, State Key Lab Geomech & Geotech Engn ; 3.Univ Chinese Acad Sci ; 4.China Earthquake Adm, Inst Crustal Dynam, Key Lab Crustal Dynam ;
推荐引用方式 GB/T 7714	Yang, Duoxing,Li, Qi,Sun, Yankun,et al. Investigation of the dynamic strain responses of sandstone using multichannel fiber-optic sensor arrays[J]. ENGINEERING GEOLOGY,2016,213:1-10.
APA	Yang, Duoxing,Li, Qi,Sun, Yankun,Sun, An,&Fan, Chengkai.(2016).Investigation of the dynamic strain responses of sandstone using multichannel fiber-optic sensor arrays.ENGINEERING GEOLOGY,213,1-10.
MLA	Yang, Duoxing,et al."Investigation of the dynamic strain responses of sandstone using multichannel fiber-optic sensor arrays".ENGINEERING GEOLOGY 213(2016):1-10.