The Shock and Vibration Digest最新文献_第7页

Multifield Transducers, Devices, Mechatronic Systems, and Structronic Systems with Smart Materials 多场换能器，设备，机电系统和结构电子系统与智能材料

The Shock and Vibration Digest Pub Date : 1998-07-01 DOI: 10.1177/058310249803000402

H. Tzou

引用次数: 69

Reliability of vibrating structures with uncertain inputs 具有不确定输入的振动结构的可靠性

The Shock and Vibration Digest Pub Date : 1998-03-01 DOI: 10.1177/058310249803000202

Y. Ben-Haim

{"title":"Reliability of vibrating structures with uncertain inputs","authors":"Y. Ben-Haim","doi":"10.1177/058310249803000202","DOIUrl":"https://doi.org/10.1177/058310249803000202","url":null,"abstract":"10 6 Summary 12 Abstract We evaluate the reliability of vibrating systems subject to severely deficient information about the dynamic loads. We stress non-probabilistic information-gap models of uncertainty, which are adapted to severe lack of information. When some probabilistic information is avail- able, we show how it can be incorporated in a hybrid probabilistic/info-gap analysis. We outline the theory of robust reliability, which replaces probabilistic reliability in those situations where prior information is insufficient to verify the choice of a probability density. We also illustrate a hybrid probabilistic/info-gap reliability analysis. Finally, we use the \"gambler's theorem\" and the idea of aversion to risk to provide an overall quantitative assessment of the performance of a system in an uncertain environment. 1 Modelling the Unknown \"Prediction\", said Niels Bohr, \"is always difficult, especially of the future.\" But we act all the time on suppositions extrapolated from incomplete information. From coin-flips to international conflicts, we predict outcomes based on partial information. When we have extensive experience, like in ambient vibrations under known and controlled conditions, we can make reliable asser- tions. But in unique and unfamiliar circumstances we have severely limited prior knowledge, so we must be much more circumspect. In analyzing the reliability of critical components and systems with respect to rare and extraordinary events, about which we know very little, we must avoid unverifiable assumptions as much as possible. In particular, we must represent the uncertainties as reliably as possible, without extraneous assumptions. In this paper we discuss a method of reliability analysis which is developed for this purpose. There is no free lunch, informationally speaking, so an analysis based on limited prior information will be able to make only modest predictions. However, the crucial point is that the analysis itself be reliable and not illusory.","PeriodicalId":405331,"journal":{"name":"The Shock and Vibration Digest","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134005464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

A summary review of vibration-based damage identification methods 基于振动的损伤识别方法综述

The Shock and Vibration Digest Pub Date : 1998-03-01 DOI: 10.1177/058310249803000201

S. Doebling, C. Farrar, M. Prime

{"title":"A summary review of vibration-based damage identification methods","authors":"S. Doebling, C. Farrar, M. Prime","doi":"10.1177/058310249803000201","DOIUrl":"https://doi.org/10.1177/058310249803000201","url":null,"abstract":"This paper provides an overview of methods to detect, locate, and characterize damage in structural and mechanical systems by examining changes in measured vibration response. Research in vibration-based damage identification has been rapidly expanding over the last few years. The basic idea behind this technology is that modal parameters (notably frequencies, mode shapes, and modal damping) are functions of the physical properties of the structure (mass, damping, and stiffness). Therefore, changes in the physical properties will cause detectable changes in the modal properties. The motivation for the development of this technology is presented. The methods are categorized according to various criteria such as the level of damage detection provided, model-based versus non-model-based methods, and linear versus nonlinear methods. The methods are also described in general terms including difficulties associated with their implementation and their fidelity. Past, current, and future-planned applications of this technology to actual engineering systems are summarized. The paper concludes with a discussion of critical issues for future research in the area of vibration-based damage identification.","PeriodicalId":405331,"journal":{"name":"The Shock and Vibration Digest","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131744330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2891

Standoff bearing fault detection using directional microphones and unsupervised neural networks 利用定向传声器和无监督神经网络进行隔震轴承故障检测

The Shock and Vibration Digest Pub Date : 1997-11-01 DOI: 10.1177/058310249702900607

V. Jammu, T. Walter

引用次数: 2

Book Reviews : NONLINEARITY AND CHAOS IN ENGINEERING DYNAMICS J.M.T. Thompson and S.R. Bishop (Eds.) John Wiley and Sons Chichester ISBN 0471944580 1994, 454 pp, $69.95 书评:非线性和混沌工程动力学J.M.T.汤普森和S.R.主教(编)约翰·威利父子出版社，ISBN 0471944580 1994, 454页，69.95美元

The Shock and Vibration Digest Pub Date : 1997-11-01 DOI: 10.1177/058310249702900611

I. Elishakoff

引用次数: 0

Article Reviews : MULTI-RESOLUTION PROCESSING FOR RANDOM VIBRATION CONTROL A.M. Karshenas, M.W. Dunnigan, B.W. Williams, and J.K. Goodfellow Journal of the IES, 40 (1), pp 35-40 (Jan-Feb 1997) 文章综述:随机振动控制的多分辨率处理Karshenas, M.W. Dunnigan, B.W. Williams和j.k Goodfellow《国际科学学报》，40 (1)，pp 35-40(1997年1 - 2月)

The Shock and Vibration Digest Pub Date : 1997-11-01 DOI: 10.1177/058310249702900608

R. H. Volin

引用次数: 0

On the self-excited oscillations of an elastic system containing a bubbling fluid 含鼓泡流体的弹性系统的自激振动

The Shock and Vibration Digest Pub Date : 1997-11-01 DOI: 10.1177/058310249702900606

N. Rieger

引用次数: 0

Book Reviews : STABILITY PROBLEMS IN FRACTURE MECHANICS V.V. Bolotin John Wiley & Sons New York 1996, 188 pp, $64.95 ISBN 0-471-12546-6 书评:《断裂力学中的稳定性问题》V.V. Bolotin John Wiley & Sons New York 1996, 188页，64.95美元，ISBN 0-471-12546-6

The Shock and Vibration Digest Pub Date : 1997-09-01 DOI: 10.1177/058310249702900509

I. Elishakoff

引用次数: 0

A review of studies dealing with dynamic stiffening of thin, elastic plates 弹性薄板动态加筋研究综述

The Shock and Vibration Digest Pub Date : 1997-09-01 DOI: 10.1177/058310249702900505

P. Laura, L. Ercoli, S. L. Malfa, D. Pasqua

引用次数: 0

An improved fan blade impact test 改进的风机叶片冲击试验

The Shock and Vibration Digest Pub Date : 1997-09-01 DOI: 10.1177/058310249702900506

A. E. Gibson

引用次数: 0