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Al-Najjar, Basim
Publications (10 of 153) Show all publications
Maletic, D., Maletic, M., Al-Najjar, B., Gotzamani, K., Gianni, M., Kalinowski, T. B. & Gomiscek, B. (2017). Contingency Factors Influencing Implementation of Physical Asset Management Practices. Organizacija, 50(1), 3-16.
Open this publication in new window or tab >>Contingency Factors Influencing Implementation of Physical Asset Management Practices
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2017 (English)In: Organizacija, ISSN 1318-5454, E-ISSN 1581-1832, Vol. 50, no 1, 3-16 p.Article in journal (Refereed) Published
Abstract [en]

Purpose: The purpose of this empirical study is to examine the role of two contingency factors, i.e. uncertainty andcompetitiveness in relation to physical asset management (PAM) practices as well as to maintenance key performanceindicators. The research is based on a premise that PAM, which was defined by risk management practices,performance assessment practices, life cycle management practices, and policy & strategy practices, has becomean indispensable element of strategic thinking of asset owners as well as maintenance and asset managers. Thepurpose of this study is to advance the understanding of how organizations that face high or low level of uncertaintyand competitiveness respond in terms of PAM deployment.Methodology/Approach: This study employed a data set based on a large-scale survey among organizations insix European countries (i.e. Slovenia, Poland, Greece, Sweden, Turkey and Slovakia). Data were collected from 138organizations located in the above-mentioned countries to conduct the study.Findings: The results show that organizations that are faced with high level of uncertainty and competitiveness aremore engaged in the deployment of PAM practices. Moreover, results show that when organizations are facing highlevels of competitiveness they are using KPIs to a greater extent than organizations under low levels of competitiveness.Originality/value: From a theoretical perspective, this study contributes to the contingency theory by providingempirical evidence whether a context-dependent approach to PAM is needed. The findings also provide insights formanagers on how to respond to the competitive pressure as well as how to customize PAM practices in order to adaptto the changes in dynamic organizational environment.

Keyword
Physical asset management, maintenance, uncertainty, competitiveness, maintenance key performance indicators, empirical study
National Category
Business Administration Reliability and Maintenance
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
urn:nbn:se:lnu:diva-61316 (URN)10.1515/orga-2017-0003 (DOI)
Available from: 2017-03-13 Created: 2017-03-13 Last updated: 2017-05-30Bibliographically approved
Maletic, D., Maletic, M., Al-Najjar, B. & Gomiscek, B. (2017). On a design of a maintenance performance measurement system: A sustainability persprctives. In: Iztok Podbregar (Ed.), 36th International Conference on Organizational Science Development: Responsible Organization. Paper presented at 36th International Conference on Organizational Science Development: Responsible Organization (pp. 509-518). University of Maribor Press.
Open this publication in new window or tab >>On a design of a maintenance performance measurement system: A sustainability persprctives
2017 (English)In: 36th International Conference on Organizational Science Development: Responsible Organization / [ed] Iztok Podbregar, University of Maribor Press , 2017, 509-518 p.Conference paper, Published paper (Refereed)
Abstract [en]

Measuring maintenance performance is important for companiesto monitor whether their planned objectives are achieved or not. It isessential to have a good overview about the performance of maintenanceprocesses in order to align maintenance objectives with the manufacturingand company’s objectives. This can be attained through a propermaintenance performance measurement system which is consisted ofindicators for measuring and monitoring the important elements of themaintenance function. A framework for maintenance performancemeasurement based on sustainability aspects is proposed. Additionally, anoverview of maintenance indicators is presented. The relevant elementsthat are needed to develop a maintenance performance measurementsystem are discussed in this study as well. Findings derived from this studyhave relevant practical implications as measuring and monitoring ofmaintenance performance measures is vital in detecting the deviations, aswell as to take timely actions, and nevertheless to achieve the desiredobjectives. In this regard, presented maintenance performance indicatorscan be useful for asset managers to develop an effective maintenanceperformance measurement system.

Place, publisher, year, edition, pages
University of Maribor Press, 2017
Keyword
maintenance, performance measurement, performance indicators, maintenance performance measurement system
National Category
Reliability and Maintenance
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
urn:nbn:se:lnu:diva-61929 (URN)10.18690/978-961-286-020-2.42 (DOI)978-961-286-020-2 (ISBN)
Conference
36th International Conference on Organizational Science Development: Responsible Organization
Available from: 2017-03-28 Created: 2017-03-28 Last updated: 2017-05-10Bibliographically approved
Al-Najjar, B. (2016). A method and an apparatus for predicting the condition of amachine or a component of the machine. us 09476803.
Open this publication in new window or tab >>A method and an apparatus for predicting the condition of amachine or a component of the machine
2016 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

The present invention relates to a methodand an apparatus for predicting the condition of a machine or a component of the machine based on measurements of a condition monitoring parameter. The apparatus comprising a data storage for storing a moving window including measurement values of the condition monitoring parameter, a monitoring module configured to determine whena measurement value exceeds a potential failure level at which damage of the machine or component is considered initiated, and to determine the point in time (tP) when the monitoring parameter exceeded the potential failure level, a data cleaning module configured to discarda new measurement value if it is smaller than the latest stored measurement value inthe moving window, to determine an expected value for the measurement based on a defined pattern for the condition monitoring parameter, which pattern reflects an expected behavior of the monitoring parameter after damage has been initiated, and the time elapsed since the point in time the monitoring parameter exceeded the potential failure level, and to discard the new measurement value if it deviates too much from the expected value, and to store not discarded measurement values in the moving window, and a prediction module configured to predict the level of the condition monitoring parameter at a future point in time based on the measurement

National Category
Applied Mechanics
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
urn:nbn:se:lnu:diva-62175 (URN)
Patent
US 09476803 (2016-10-25)
Available from: 2017-04-10 Created: 2017-04-10 Last updated: 2017-05-31Bibliographically approved
Al-Najjar, B. & Algabroun, H. (2016). A Model for Increasing Effectiveness and Profitability of Maintenance Performance: A Case Study. In: Proceedings of 2016 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE 2016) 2016 World Congress on Engineering Asset Management (WCEAM2016): . Paper presented at International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE 2016) 2016 World Congress on Engineering Asset Management (WCEAM2016, July 25-28, 2016, Jiuzhaigou, Sichuan, China (pp. 1-7). Institute of Reliability Engineering, Article ID QR2MSE2016 & WCEAM2016-0003-0038.
Open this publication in new window or tab >>A Model for Increasing Effectiveness and Profitability of Maintenance Performance: A Case Study
2016 (English)In: Proceedings of 2016 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE 2016) 2016 World Congress on Engineering Asset Management (WCEAM2016), Institute of Reliability Engineering , 2016, 1-7 p., QR2MSE2016 & WCEAM2016-0003-0038Conference paper, Published paper (Refereed)
Abstract [en]

In today’s market, companies strive to achieve the competitive advantages. Failing in achieving these goals could threaten the companies’ existence. Failures in the operative level impact negatively on achieving these goals. In order to record these failures for better actions planning, special systems are often used for counting the number of failures, registering the duration of machines downtime and uptime for assessing the total downtime and classifying problems/failures in categories that are decided in advance. These categories can be Electrical, Electronic, Hydraulic, Mechanical, Pneumatics, Human error, and Miscellaneous. In this study, we develop a model to break down the contents of a company/machine failure databases, prioritize failures, assess economic losses due to failure impact on the competitive advantages and suggest a method of how maintenance actions should be rank-ordered cost-effectively. The model is tested using real data. The major results showed that losses aremainly due to two categories i.e. “Bad quality“ and “Less profit margin”, where failures of “Gear”, “Bearing” and “Raw materials quality” cause most of the losses. It is concluded that this model enables the user to quickly identify and prioritize maintenance and improvement efforts cost-effectively.

Place, publisher, year, edition, pages
Institute of Reliability Engineering, 2016
Keyword
Maintenance Performance Enhancement; Failures Impacts; Competitive Advantages, Decision Making, Decision Support Systems, Maintenance Impact on Company Business, Significant Failures Identification and Prioritization
National Category
Reliability and Maintenance
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
urn:nbn:se:lnu:diva-60782 (URN)
Conference
International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE 2016) 2016 World Congress on Engineering Asset Management (WCEAM2016, July 25-28, 2016, Jiuzhaigou, Sichuan, China
Note

Ej belagd 170314

Available from: 2017-02-21 Created: 2017-02-21 Last updated: 2017-09-19Bibliographically approved
Al-Najjar, B. (2016). A universal coupling for transferring rotary movements between an inputshaft and an output shaft. se 1550124-0.
Open this publication in new window or tab >>A universal coupling for transferring rotary movements between an inputshaft and an output shaft
2016 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

The present invention relates to a universal coupling for transferring rotary movements between an input shaft and an output shaft (when the angel between the shafts can be about 90 degree), wherein each of the shafts are arranged to rotate about a longitudinal axis of the shaft, the coupling comprising: an input joint member and output joint member movably coupled to each, and the input joint member  is fixedly connected to the input shaft and the output joint member is fixedly connected to the output shaft.  Each of the input and output joint members comprises at least one annular part having a cross section and defining a central aperture, the annular part of the input joint member passes through the aperture of the annular part of the output joint member, and the annular part of the output joint member passes through the aperture of the annular part of the input joint member, and the area of each the central apertures is larger than the cross section area of each of the annular parts and two spaced apart contact points are formed between the annular parts of the input and output joint members.

National Category
Applied Mechanics
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
urn:nbn:se:lnu:diva-62173 (URN)
Patent
SE 1550124-0 (2016-08-11)
Available from: 2017-04-10 Created: 2017-04-10 Last updated: 2017-05-31Bibliographically approved
Al-Najjar, B. (2016). Determination of potential failure initiation time using cumulative sum chart. In: Christos Emmanouilidis, Benoît Iung, Marco Macchi and François Pérès (Ed.), IFAC-PapersOnLine: . Paper presented at 3rd IFAC Workshop on Advanced Maintenance Engineering, Services and Technology AMEST 2016 Biarritz, France, 19—21 October 2016 (pp. 43-48). Elsevier, 49:28.
Open this publication in new window or tab >>Determination of potential failure initiation time using cumulative sum chart
2016 (English)In: IFAC-PapersOnLine / [ed] Christos Emmanouilidis, Benoît Iung, Marco Macchi and François Pérès, Elsevier, 2016, Vol. 49:28, 43-48 p.Conference paper, Published paper (Refereed)
Abstract [en]

Hard competition forces companies to reduce uncertainty in production planning through, e.g. reducing the probability of failures. In this paper, more accurate data analysis through reducing randomness in vibration measurements is introduced. Quality control tool Cumulative Sum (Cusum) Chart is adapted for monitoring variation in vibration level to determine the time of potential failure initiation. The result confirms the possibility of reducing false alarms arise due to randomness in vibration signals. The major conclusion; applying Cusum chart it is possible to determine the time of initiation of a potential failure for follow up its progression and accurate planning of maintenance.

Place, publisher, year, edition, pages
Elsevier, 2016
Series
IFAC-PapersOnLine, ISSN 2405-8963
Keyword
Condition Monitoring, Failure Consequences, Identification of the Time of a Potential Failure Initiation
National Category
Reliability and Maintenance Business Administration
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
urn:nbn:se:lnu:diva-59119 (URN)10.1016/j.ifacol.2016.11.008 (DOI)000401258400008 ()2-s2.0-85006339785 (Scopus ID)
Conference
3rd IFAC Workshop on Advanced Maintenance Engineering, Services and Technology AMEST 2016 Biarritz, France, 19—21 October 2016
Available from: 2016-12-19 Created: 2016-12-19 Last updated: 2017-07-18Bibliographically approved
Ingwald, A. & Al-Najjar, B. (2016). EcoCon: A System for Monitoring Economic and Technical Performance of Maintenance. In: Proceedings of 2016 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE 2016) 2016 World Congress on Engineering Asset Management (WCEAM2016): . Paper presented at International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE 2016) 2016 World Congress on Engineering Asset Management (WCEAM2016) July 25-28, 2016, Jiuzhaigou, Sichuan, China (pp. 654-661). Institute of Reliability Engineering.
Open this publication in new window or tab >>EcoCon: A System for Monitoring Economic and Technical Performance of Maintenance
2016 (English)In: Proceedings of 2016 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE 2016) 2016 World Congress on Engineering Asset Management (WCEAM2016), Institute of Reliability Engineering , 2016, 654-661 p.Conference paper, Published paper (Refereed)
Abstract [en]

Maintenance has been treated as a cost-centre although it has obvious direct impact on company production, delivery on time, product quality and consequently company business. In this paper we develop and test a new system (EcoCon) for monitoring and assessing the economic impact of maintenance on a production process. Results from a literature survey regarding approaches for measuring maintenance performance is introduced and discussed. Then EcoCon for measuring maintenance economic impact is developed, considering strengths and weaknesses of the reviewed approaches. EcoCon is tested using real industrial data collected over three years. The main findings in this paper are that by using EcoCon it is possible to assess maintenance economic impact on a production process. Furthermore, EcoCon can provide data useful for analysing causes behind deviations in maintenance and production performance. It can be applied properly on any other company of similar production process/machine. But, since the situation may vary greatly between different companies and production process/machines, the system demands marginal accommodation to suit the differences in the maintenance economic related factors among companies. However, the case study showed that an area that needs more research is related to cost of downtime. EcoCon makes it possible to monitor maintenance economic impact by linking technical production performance, i.e. number of failures, average downtime, short stoppages and quality level to economic savings and losses generated due to maintenance performance and other activities. By this it provides production and maintenance mangers reliable overview of maintenance role and importance. The paper provides possibility to assess maintenance economic impact, which is based on its operative (technical) performance, on production process.

Place, publisher, year, edition, pages
Institute of Reliability Engineering, 2016
Keyword
Production process monitoring, performance measure, continuous improvement, maintenance
National Category
Reliability and Maintenance
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
urn:nbn:se:lnu:diva-61122 (URN)
Conference
International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE 2016) 2016 World Congress on Engineering Asset Management (WCEAM2016) July 25-28, 2016, Jiuzhaigou, Sichuan, China
Note

Ej belagd 170314

Available from: 2017-03-07 Created: 2017-03-07 Last updated: 2017-03-14Bibliographically approved
Al-Najjar, B., Ingwald, A. & Kans, M. (2016). Maintenance in Real Estate and Manufacturing Industries: Differences, Problems, Needs and Potentials - Four Case Studies. In: Kari T. Koskinen, Helena Kortelainen, Jussi Aaltonen, Teuvo Uusitalo, Kari Komonen, Joseph Mathew, Jouko Laitinen (Ed.), Koskinen, KT; Kortelainen, H; Aaltonen, J; Uusitalo, T; Komonen, K; Mathew, J; Laitinen, J (Ed.), Proceedings of the 10th World Congress on Engineering Asset Management (WCEAM 2015): . Paper presented at 10th World Congress on Engineering Asset Management (WCEAM), Tampere, FINLAND, SEP 28-30, 2015 (pp. 13-27). Switzerland: Springer.
Open this publication in new window or tab >>Maintenance in Real Estate and Manufacturing Industries: Differences, Problems, Needs and Potentials - Four Case Studies
2016 (English)In: Proceedings of the 10th World Congress on Engineering Asset Management (WCEAM 2015) / [ed] Koskinen, KT; Kortelainen, H; Aaltonen, J; Uusitalo, T; Komonen, K; Mathew, J; Laitinen, J, Switzerland: Springer, 2016, 13-27 p.Conference paper, Published paper (Refereed)
Abstract [en]

It is about 50 % of the activities in the housing sector in the EU region are related to maintenance. According to several publications, building management systems are still quite rare and efficient methodologies for service life prediction of building parts still need to be developed. Also, recent studies show difficulties in finding comprehensive answers concerning, e.g. identifying risks and preventive maintenance actions. Incomplete information can easily lead to incorrect maintenance actions. The problem addressed is: How to improve performance and cost-effectiveness of the maintenance applied on real estate facilities especially buildings to reduce maintenance and management costs and increase company profit? The study’s objectives are to analyse maintenance; techniques, costs, weaknesses and potentials, and compare it with manufacturing industry experience. Also, to investigate whether there is a need for a DSS for planning and follow up cost-effective CBM. The major results of four case studies are; (1) Preventive and breakdown maintenance are mainly used and actions are funded from different accounts. (2) The concept of cost-effectiveness is applied occasionally. (3) Lack of CBM-DSS for planning, follow up and evaluate maintenance profitability, and cost-effective improvements of company business and tenant living quality. (4) The profit generated by continuous heating of building thanks efficient maintenance is about 2.332 million SEK. The major conclusion; there is a reasonable opportunity to reduce buildings’ management and maintenance costs.

Place, publisher, year, edition, pages
Switzerland: Springer, 2016
Series
Lecture Notes in Mechanical Engineering, ISSN 2195-4356
Keyword
Maintenance techniques in real estate facilities – Cost-effectiveness – Comparison between maintenance in manufacturing and real estate industries – CBM – Decision support system
National Category
Mechanical Engineering
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
urn:nbn:se:lnu:diva-51860 (URN)10.1007/978-3-319-27064-7_2 (DOI)000375993100002 ()978-3-319-27064-7 (ISBN)
Conference
10th World Congress on Engineering Asset Management (WCEAM), Tampere, FINLAND, SEP 28-30, 2015
Available from: 2016-04-01 Created: 2016-04-01 Last updated: 2016-06-10Bibliographically approved
Maletič, D., Maletič, M., Al-Najjar, B., Gotzamani, K., Gianni, M., Kalinowski, T. B., . . . Gomišček, B. (2016). The role of contingency factors in physical asset management: An empirical examination. In: Euromaintenance 2016 proceedings: . Paper presented at Euromaintenance 2016, 30 May-1 June, 2016, Athens, Greece (pp. 93-99). ARTION Conferences & Events.
Open this publication in new window or tab >>The role of contingency factors in physical asset management: An empirical examination
Show others...
2016 (English)In: Euromaintenance 2016 proceedings, ARTION Conferences & Events , 2016, 93-99 p.Conference paper, Published paper (Refereed)
Abstract [en]

This research presents an empirical study, which examines the role of contingency factors, i.e. uncertainty and competitiveness in relation to physical asset management (PAM) practices. The research is based on a premise that PAM, which comprises of risk management practices, performance assessment practices, life cycle management practices, policy & strategy practices, has become an indispensable element of strategic thinking of asset owners as well as maintenance and asset managers. The purpose of this study is to advance the understanding of how organizations that face high or low level of uncertainty and competitiveness respond in terms of PAM deployment.

This study employed a data set based on a large-scale survey among organizations in six European countries (i.e. Slovenia, Poland, Greece, Sweden, Turkey and Slovakia). The results show that organizations that are faced with high level of uncertainty and competitiveness are more engaged in the deployment of PAM practices. From a theoretical perspective, this study contributes to the contingency theory by providing empirical evidence whether a context-dependent approach to PAM is needed. The findings also provide insights for managers on how to respond to the competitive pressure as well as how to customize PAM practices in order to adapt to the changes in dynamic organizational environment.

Place, publisher, year, edition, pages
ARTION Conferences & Events, 2016
Keyword
Physical asset management, maintenance, uncertainty, competitiveness, empirical study
National Category
Business Administration
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
urn:nbn:se:lnu:diva-53137 (URN)978-618-82601-0-8 (ISBN)
Conference
Euromaintenance 2016, 30 May-1 June, 2016, Athens, Greece
Available from: 2016-06-08 Created: 2016-06-08 Last updated: 2017-03-15Bibliographically approved
Al-Najjar, B. (2015). Just-in time and dynamic maintenance (JIT-Maint) for turbine, generator, gearbox and sawmills: case stories. In: Marta Clelia Ruch (Ed.), 28º COMADEM + X CORENDE 2015: . Paper presented at The 28th International Congress of Condition Monitoring and Diagnostic Engineering Management (COMADEM 2015) + X Corende 2015. Asociación Argentina de Ensayos no Destructivos y Estructurales, AAENDE.
Open this publication in new window or tab >>Just-in time and dynamic maintenance (JIT-Maint) for turbine, generator, gearbox and sawmills: case stories
2015 (English)In: 28º COMADEM + X CORENDE 2015 / [ed] Marta Clelia Ruch, Asociación Argentina de Ensayos no Destructivos y Estructurales, AAENDE , 2015Conference paper, Published paper (Refereed)
Abstract [en]

Profitable production demands continuously improved maintenance decision accuracy to reduce unplanned stoppages, prolong components/machines  life length and maintain production continuity. When CM, e.g. vibration level or oil temperature, value exceeds a warning level, it demands a clear understanding of what happened and how it will develop to avoid failures. It demands also reliable information, e.g. probability of failure, residual  life and when is the most profitable time for maintenance. Companies strive to reduce production cost through reducing non-value adding times, e.g. failures, for offering customers lower prices and generating additional competitive advantages. In this paper, a new tool (Prediction of Vibration and oil temperature, PreVib) for predicting the condition of a turbine, generator and gearbox is introduced,  discussed and tested. The solution offers a unique opportunity to achieve just in time dynamic and cost-effective maintenance by selecting the most profitable time for maintenance. PreVib is tested in a power plant. The major results: Failures can appreciably be reduced thanks the high precision of prediction ( + 90%), i.e. a negligible difference from the real measurement: PreVib does not demand extensive or additional data, and not replace available maintenance systems. The major conclusion is that applying PreVib, it is possible to reduce failures appreciably, prolong life length of components/equipment and perform profitable maintenance

Place, publisher, year, edition, pages
Asociación Argentina de Ensayos no Destructivos y Estructurales, AAENDE, 2015
Keyword
Just in Time Maintenance; Dynamic and Cost-effective Maintenance; Prediction of Vibration Level; Assessment of Probability of Failure; Assessment of Residual Time; Profitable Maintenance Time; Maintenance Decision Accuracy, eMaintenance Decision Support System (eMDSS)
National Category
Business Administration Other Engineering and Technologies not elsewhere specified
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
urn:nbn:se:lnu:diva-48335 (URN)978-987-23957-6-6 (ISBN)
Conference
The 28th International Congress of Condition Monitoring and Diagnostic Engineering Management (COMADEM 2015) + X Corende 2015
Available from: 2015-12-14 Created: 2015-12-14 Last updated: 2016-02-16Bibliographically approved
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