Failure potential evaluation in engineering experiments using load/unload response ratio method

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	Failure potential evaluation in engineering experiments using load/unload response ratio method
	Zhang LP(张浪平); Yu HZ; Yin XC(尹祥础)
刊名	PURE AND APPLIED GEOPHYSICS
	2013-01
通讯作者邮箱	zhanglp-LURR@gmail.com; yuhz750216@sina.com; xcyin@public.bta.net.cn
卷号	170 期号:1-2 页码:237-245
关键词	Load/Unload Response Ratio (LURR) two-floor structure Weibull distribution macro-fracture structure health assessment
ISSN号	0033-4553
通讯作者	Zhang, LP (reprint author), China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China.
产权排序	[Zhang, Lang-ping; Yin, Xiang-chu] China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China; [Yu, Huai-zhong] China Earthquake Networks Ctr, Beijing 100045, Peoples R China; [Zhang, Lang-ping; Yin, Xiang-chu] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
合作状况	国内
中文摘要	The Load/Unload Response Ratio (LURR) method is proposed for prediction of the failure of brittle heterogeneous materials. Application of the method typically involves evaluating the external load on materials or structures, differentiating between loading and unloading periods, determining the failure response during both periods from data input, and calculating the ratio between the two response rates. According to the method, the LURR time series usually climbs to an anomalously high peak prior to the macro-fracture. To show the validity of the approach in engineering practice, we applied it to the loading and unloading experimental data associated with a two-floor concrete-brick structure. Results show that the LURR time series of the two floors consists of the damage evolution of the structure: they are at low level for most of the time, and reach the maxima prior to the final fracture. We then attempt to combine the LURR values with damage variable (D) to provide the health assessment of the structure. The relationship between LURR and D, defined as a function of Weibull stochastic distribution, is set up to provide more detailed underlying physical means to study damage evolution of the structure. The fact that the damage evolution of the structure correlates well with the variation of LURR time series may suggest that the LURR approach can be severed as a useful tool to provide the health assessment to big scale structures or ancient buildings.
学科主题	固体力学
分类号	二类/Q2
收录类别	SCI ; EI
资助信息	National Natural Science Foundation of China [41004018]; Basic Research Foundation of Institute of Earthquake Science, China Earthquake Administration [02092425]
原文出处	http://dx.doi.org/10.1007/s00024-011-0370-7
语种	英语
WOS记录号	WOS:000313455700018
公开日期	2013-03-07
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/47026]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Zhang LP,Yu HZ,Yin XC. Failure potential evaluation in engineering experiments using load/unload response ratio method[J]. PURE AND APPLIED GEOPHYSICS,2013,170(1-2):237-245.
APA	Zhang LP,Yu HZ,&Yin XC.(2013).Failure potential evaluation in engineering experiments using load/unload response ratio method.PURE AND APPLIED GEOPHYSICS,170(1-2),237-245.
MLA	Zhang LP,et al."Failure potential evaluation in engineering experiments using load/unload response ratio method".PURE AND APPLIED GEOPHYSICS 170.1-2(2013):237-245.