Innovative 3D information system for the restoration and preventive maintenance plan of the Milan Cathedral

2004 ◽  
Author(s):  
Giuseppe G. Giunta
Keyword(s):  
Information System ◽  
Preventive Maintenance ◽  
3D Information ◽  
Maintenance Plan

3D Information System for the Digital Documentation and the Monitoring of Stone Alteration

2012 ◽  
pp. 330-339 ◽  
Author(s):  
Chiara Stefani ◽  
Xavier Brunetaud ◽  
Sarah Janvier-Badosa ◽  
Kevin Beck ◽  
Livio De Luca ◽  
...  
Keyword(s):  
Information System ◽  
Digital Documentation ◽  
3D Information

scholarly journals GIS and BIM as Integrated Digital Environments for Modeling and Monitoring of Historic Buildings

2020 ◽  
Vol 10 (3) ◽  
pp. 1078 ◽  
Author(s):  
Elisavet Tsilimantou ◽  
Ekaterini T. Delegou ◽  
Ioannis A. Nikitakos ◽  
Charalabos Ioannidis ◽  
Antonia Moropoulou
Keyword(s):  
Information System ◽  
Structural Integrity ◽  
Information Modeling ◽  
Historic Building ◽  
Multidisciplinary Data ◽  
Building Information ◽  
Digital Environments ◽  
Quantitative Manner ◽  
3D Information ◽  
2D And 3D

Multidisciplinary data integration within an information system is considered a key point for rehabilitation projects. Information regarding the state of preservation and/or decision making, for sustainable restoration is prerequisite. In addition, achieving structural integrity of a historic building, especially one that has undergone many construction phases and restoration interventions, is a very elaborate task and should, therefore, involve the study of multidisciplinary information regarding historical, architectural, building material and geometric data. In this paper the elaboration of such data within 2D and 3D information systems is described. Through the process described herein, a methodology, including the acquisition, classification and management of various multisensory data, is displayed and applied within a geographic information system (GIS). Moreover, the multidisciplinary documentation process, aggregated with the surveying products, generates 3D heritage building information modeling (HBIM), including information regarding construction phases, pathology and current state of preservation of a building. The assessment of the applied methodology is performed concluding in a qualitative and a quantitative manner, in both 2D and 3D environments, providing information to facilitate the structural assessment of a historic building. Thus, in this work, the described methodology is presented, combining the multidisciplinary data with the development of GIS thematic maps and an HBIM. Representative results of the suggested methodology applied on the historic building of Villa Klonaridi, Athens, Greece are displayed.

A Joint Model of Production and Preventive Maintenance Plan

2010 ◽  
Vol 156-157 ◽  
pp. 18-23
Author(s):  
Zhi Qiang Lu ◽  
Yue Jun Zhang
Keyword(s):  
System Reliability ◽  
Preventive Maintenance ◽  
Lot Sizing ◽  
Threshold Value ◽  
Joint Model ◽  
Production Plan ◽  
Lot Sizing Problem ◽  
Capacitated Lot Sizing ◽  
The Difference ◽  
Maintenance Plan

We integrated run-based preventive maintenance (PM) into the production plan at the tactical level. The production plan was based on the single level capacitated lot-sizing problem (CLSP). We assumed the system reliability should be kept above certain threshold value to ensure the feasibility of the production plan; the reliability would be affected only by system running. Thus, PM would be triggered by the reliability requirement and the accumulated running time. We established this relationship as a nonlinear integer constraint in the joint model. We also proposed a branch and bound algorithm using CPLEX to solve the model. Finally, a numerical example was given to illustrate the difference between run-based and time-based PM.

Development of Computerized Preventive Maintenance Management System with Failure Mode and Effect Analysis for CNC Machine

2014 ◽  
Vol 627 ◽  
pp. 365-371 ◽  
Author(s):  
Em Ardchaya Rungsa ◽  
Somkiat Tangjitsitcharoen
Keyword(s):  
Failure Mode ◽  
Preventive Maintenance ◽  
Management System ◽  
Maintenance Management ◽  
Risk Priority Number ◽  
Cnc Machine ◽  
Effect Analysis ◽  
Cnc Machines ◽  
Intelligent Maintenance ◽  
Maintenance Plan

In order to realize the intelligent maintenance management system, this paper presents a development of computerized preventive maintenance management system (CPMMS) to manage and record the maintenance information in the database for the CNC machines. The failure mode and effect analysis (FMEA) has been utilized to deal with the computerized preventive maintenance management system in this research. The FMEA is analyzed to determine the risk priority number (RPN) of the CNC machines in order to set the preventive maintenance plan as a standard maintenance. The developed program can generate the next schedule of the preventive maintenance plan automatically, which increases the efficiency and decreases the breakdown. It has been proved that the proposed and developed CPMMS with FMEA program can improve the overall equipment effectiveness (OEE). The RPN has been reduced due to a decrease in the severity and the occurrence.

scholarly journals Guide to Maintain Historic Egyptian Mosques: Case Study of Abul-Hajjaj Mosque - Luxor

2017 ◽  
Vol 1 (1) ◽  
pp. 12
Author(s):  
Hesham Osman Abd Elrahman
Keyword(s):  
Preventive Maintenance ◽  
Major Elements ◽  
Historic Buildings ◽  
Planning And Scheduling ◽  
Common Ownership ◽  
The Status ◽  
Maintenance Systems ◽  
Maintenance Plan ◽  
Tools And Methods

The mosque is considered one of the most important buildings of the Islamic city since the Prophet's Mosque (peace and blessings be upon him), and maintenance is considered an important element and a cornerstone of buildings in general. This is due to the deterioration of public buildings generally given the bad use and common ownership of the mosque and in turn, its facilities have deteriorated. Some mosques belong to historic buildings, so maintaining them is of extra importance.In light of the status of the construction and maintenance systems of historic mosques in Egypt and the limitations and problems faced, this paper presents a proposed guide for the preventive maintenance of historic mosques. It also provides clear evidence for workers in the field of maintenance of mosques including the key elements that need to be taken into consideration while preparing the preventive maintenance plan for mosques.The preventive maintenance of the mosque needs a range of tools and methods in order to succeed. Planning and scheduling for items are major elements among these tools. In order to achieve integration between the elements and the different phases mentioned above, we need to formulate them in a form of an integrated guide with completed elements and dimensions. To find a guide for the maintenance of the mosques we should clearly identify the principles and rules for that guide. This comes through clarity of the purpose, the elements required to be controlled, how to control them, the statement of the time and places and the economic aspects of the guide.This research aims to find a guide for the maintenance of historic mosques, by making a case study for the Mosque of Abul-Hajjaj in Luxor.

scholarly journals PENGEMBANGAN SISTEM INFORMASI PREVENTIVE MAINTENANCE PADA PT. MEDAN TROPICAL CANNING

2019 ◽  
Vol 2 (2) ◽  
pp. 145
Author(s):  
Erikson Damanik
Keyword(s):  
Information System ◽  
Preventive Maintenance ◽  
System Development ◽  
Spare Parts ◽  
Database Management System ◽  
Sql Server 2000 ◽  
Development Methodology ◽  
Business Objects ◽  
Crystal Report ◽  
Maintenance Schedules

PT. Medan Tropical Canning is a company engaged in the production and export of aquaculture materials and marine catches, such as shrimp, fish, and so on. PT. Medan Tropical Canning manually monitors and maintains production machinery such as calculation of maintenance schedules and replacement of spare parts contained in production machinery. Frequent occurrences of errors in the calculation of maintenance scheduling and replacement of spare parts cause disruption of production activities.To deal with the problem, the authors propose a computerized information system using the STRADIS system development methodology. This information system is a program developed using the Microsoft Visual Basic 2005 programming language, database using Microsoft SQL Server 2000, and Business Objects Crystal Report 10 for report design.With the completion of the developed system, the data inputted will be processed with a database management system so that it can help monitor and maintain production machines and make reports faster and more accurate. The results of this computerized preventive maintenance information system are expected to benefit the company.

An availability-based warranty policy considering preventive maintenance and learning effects

2017 ◽  
Vol 232 (6) ◽  
pp. 576-586 ◽  
Author(s):  
Chun Su ◽  
Longfei Cheng
Keyword(s):  
Preventive Maintenance ◽  
Learning Effects ◽  
Wind Turbine Gearbox ◽  
Cost Rate ◽  
Maintenance Schedule ◽  
Warranty Period ◽  
Hazard Rate Model ◽  
Equipment Failures ◽  
Warranty Cost ◽  
Maintenance Plan

By considering learning effects during the process of maintenance, this article investigates an availability-based warranty policy from the manufacturer’s perspective. Imperfect preventive maintenance activities are implemented to reduce the number of equipment failures so as to meet the product’s availability requirement and minimize warranty servicing cost during the warranty period. Hybrid hazard rate model is used to describe imperfect preventive maintenance actions; maintenance plan and warranty servicing cost are optimized by considering learning effects. Preventive maintenance schedule within a warranty period is optimized cycle by cycle, and the warranty cost rate is minimized under the requirement of availability within each cycle. Numerical example of a wind turbine gearbox is provided to verify the effectiveness of the proposed availability-based warranty policy. Sensitivity analysis shows that by considering learning effects on maintenance, the gearbox can maintain a higher availability level with a lower warranty cost than the case without consideration of learning effects.

Study on Information System with Condition-Based Maintenance Models for a Continuously Degrading System

2013 ◽  
Vol 703 ◽  
pp. 227-230 ◽  
Author(s):  
Ao Lin Huang ◽  
Qing Min Li ◽  
Tie Bing Li
Keyword(s):  
Information System ◽  
Preventive Maintenance ◽  
Process Models ◽  
Condition Based Maintenance ◽  
Optimal Solutions ◽  
Model And Simulation ◽  
Maintenance Time ◽  
Degrading System ◽  
Maintenance Model

This paper considers on-condition maintenance of a continuously degrading information system, in which the inter-maintenance time and the maintenance time depend on the condition of the system at which maintenance is carried out. The durations of preventive maintenance activities are supposed to be exponentially distributed. Assuming deterioration of the system follows a gamma process, models are established to maximize the system average availability when the effectiveness of the preventive maintenance activity becomes weaker and weaker. Optimal solutions on the condition of the system at which maintenance should be performed and the number of times of maintenance action to be carried out are obtained based on Monte-Carlo simulation. A case study is given to show the procedure of the maintenance model and simulation.

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