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); Zhang, LP (reprint author), China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China.
发表期刊	PURE AND APPLIED GEOPHYSICS
	2013-01
卷号	170 期号:1-2 页码:237-245
ISSN	0033-4553
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.
关键词	Load/unload Response Ratio (Lurr) Two-floor Structure Weibull Distribution Macro-fracture Structure Health Assessment
学科领域	固体力学
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000313455700018
项目资助者	National Natural Science Foundation of China [41004018]; Basic Research Foundation of Institute of Earthquake Science, China Earthquake Administration [02092425]
论文分区	二类/Q2
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/47026
专题	非线性力学国家重点实验室
通讯作者	Zhang, LP (reprint author), China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China.
推荐引用方式 GB/T 7714	Zhang LP,Yu HZ,Yin XC,et al. 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,&Zhang, LP .(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.

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