Monitoring the state of engineering systems

1997 ◽  
Vol 33 (1) ◽  
pp. 36-37
Author(s):  
V. I. Pavlov
Keyword(s):  
The State ◽  
Engineering Systems

System reliability modelling: The current capability and potential future developments

2009 ◽  
Vol 223 (12) ◽  
pp. 2881-2897 ◽  
Author(s):  
J Andrews
Keyword(s):  
System Reliability ◽  
State Of The Art ◽  
Reliability Assessment ◽  
The State ◽  
Engineering Systems ◽  
Industrial Systems ◽  
Future Developments ◽  
Reliability Modelling ◽  
Assessment Techniques ◽  
Made In

This article describes the state-of-the-art methods available for systems reliability assessment. The significant contributions made to those methods in common use for the analysis of industrial systems are identified. The article reviews the developments in engineering systems that are likely to occur over the next decade that will challenge the current capability in this field and the potential advances that may result. A discussion is also provided of novel uses that will become possible due to the advances made in the assessment techniques over this period.

PZT Sensors and their Application in Structural Health Monitoring

2011 ◽  
Vol 128-129 ◽  
pp. 669-675 ◽  
Author(s):  
Xuan Sun
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Lamb Wave ◽  
State Of The Art ◽  
Research Work ◽  
Mechanical Systems ◽  
The State ◽  
Theoretical Studies ◽  
Engineering Systems ◽  
Experimental And Theoretical Studies

This paper provides the state of the art in methods to detect damage in structural and mechanical systems by PZT sensors, which include impedance methods and lamb wave propagations. The basic idea behind these technologies is to use impedance of PZT embedded on surface or lamb wave propagations. A brief overview of research work on experimental and theoretical studies on various structures and mechanical systems is descried. Past, current and applications of this technology in actual engineering systems are summarized. Finally, desirable developments for further advancement of this field are discussed.

scholarly journals Forensic Construction Investigation of Reconstructed Premises

2022 ◽  
Vol 16 (4) ◽  
pp. 64-71
Author(s):  
I. D. Platonova ◽  
N. G. TSaritova ◽  
E. G. Tekutov
Keyword(s):  
Building Materials ◽  
Housing Stock ◽  
Living Conditions ◽  
The State ◽  
Engineering Systems ◽  
Forensic Investigation ◽  
Public Buildings ◽  
Federal Laws ◽  
Proper Operation

The article addresses solving the issue of the possibility of preserving reconstructed premises or carrying out proposed reconstruction works in the course of in the course of construction forensic investigation. The significance of the problem attributes to the volume of the stock of residential and public buildings which are older than 40 years (according to statistics, the housing stock of Russia in 1980 was 1,861 million m2 , in 2015 – 3,581 million m2 ), outdated layouts of premises, and the evolved consumers’ idea of comfort.A construction expert’s task is to determine if there is a possibility to change the layout, the function of premises to improve living conditions, or reconstruction poses a threat to the state of the object, its further proper operation, the integrity of the installed engineering systems, the appearance of the facades, nearby buildings and structures. Using regulatory material, the authors consider the criteria for solving this problem, present the procedure for conducting studies of buildings or structures, building materials, structures, and relevant documents in this line of forensic construction examination. Finally, the article gives specific examples of the redevelopment of apartments, a proposed reconstruction of the kindergarten premises.It is noted that the reliability of experts’ opinions is based on a comprehensive, unbiased analysis of all the technical and economic characteristics of construction objects, verification of documentation, an inspection of structures for compliance with the requirements of federal laws, rules, and regulations.

scholarly journals Perspectives of the implementation of intelligent transport systems in the Oryol urban agglomeration

2021 ◽  
Vol 341 ◽  
pp. 00053
Author(s):  
Andrei Bodrov ◽  
Denis Lomakin ◽  
Oleg Ivanov ◽  
Ekaterina Minaeva
Keyword(s):  
Traffic Management ◽  
Traffic Monitoring ◽  
The State ◽  
Urban Agglomeration ◽  
Transport Systems ◽  
Engineering Systems ◽  
Intelligent Transport Systems ◽  
Intelligent Transport ◽  
The Russian Federation ◽  
Monitoring Performance

In the presented work authors discuss and put under scrutiny perspectives of the implementation of intelligent transport systems (ITS) in urban agglomerations in the Russian Federation on the example of the Oryol urban agglomeration. The degree of readiness of the Oryol urban agglomeration for the implementation of intelligent transport systems was assessed by applying the following criteria: a) the state of traffic monitoring performance, b) the state of traffic management organization and road safety, c) the state of transport planning organization, d) the state of traffic administration, e) the degree of justification for the implementation (improvement) of ITS in the agglomeration, f) the level of development of ITS in the region, g) resource provision of ITS engineering systems.

Quantifying the value of information from inspecting and monitoring engineering systems subject to gradual and shock deterioration

2021 ◽  
pp. 147592172098186
Author(s):  
Leandro Iannacone ◽  
Pier Francesco Giordano ◽  
Paolo Gardoni ◽  
Maria Pina Limongelli
Keyword(s):  
Value Of Information ◽  
The State ◽  
Decision Makers ◽  
Optimal Management ◽  
Engineering Systems ◽  
System State ◽  
Bayesian Decision ◽  
Reinforced Concrete Bridge ◽  
Acquisition Strategies

The state of engineering systems changes in time due to the effect of gradual (e.g. corrosion, fatigue) and shock deterioration (e.g. earthquakes, floods, and tornados). At specified moments, for example, after a shock, decision-makers might wish to know the state of the system to take the optimal management action. Different data acquisition strategies such as inspections and continuous structural health monitoring (SHM) can help in the definition and prediction of the system state over time. The acquisition of information comes at a cost that must be balanced by the benefit it brings in terms of risk reduction. The value of information from Bayesian decision analysis quantifies the benefit provided by such information. This article proposes a formulation to compute the value of information of inspection and continuous SHM for degrading engineering systems. In the proposed formulation, the information collected before a given time is used to improve the prediction of the effects of gradual and shock deterioration processes and the future probability of failure. This article investigates the case study of a two-span reinforced concrete bridge degrading under the effect of chemical reactions and seismic actions.

Practical Picture Processing

1974 ◽  
Vol 32 ◽  
pp. 338-339
Author(s):  
T. A. Welton
Keyword(s):  
Radiation Damage ◽  
Coherence Length ◽  
Spatial Information ◽  
State Of The Art ◽  
Coherent Radiation ◽  
The State ◽  
Energy Spread ◽  
Electron Micrograph ◽  
Picture Processing ◽  
Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

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