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Downtime analysis of drilling machines and suggestions for improvements
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Drift, underhåll och akustik.ORCID-id: 0000-0001-5620-5265
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Drift, underhåll och akustik.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Drift, underhåll och akustik.
2014 (engelsk)Inngår i: Journal of Quality in Maintenance Engineering, ISSN 1355-2511, E-ISSN 1758-7832, Vol. 20, nr 4, s. 306-332Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Purpose– The purpose of this paper is to analyse and compare the downtime of four drilling machines used in two underground mines in Sweden. The downtime of these machines was compared to show what problems affect downtime and which strategies should be applied to reduce it.Design/methodology/approach– The study collects failure data from a two-year period for four drilling machines and performs reliability analysis. It also performs downtime analysis utilising a log-log diagram with a confidence interval.Findings– There are notable differences in the downtime of most of the studied components for all machines. The hoses and feeder have relatively high downtime. Depending on their downtime, the significant components can be ranked in three groups. The downtime of the studied components is due to reliability problems. The study suggests the need to improve the reliability of critical components to reduce the downtime of drilling machines.Originality/value– The method of analysing the downtime, identifying dominant factors and the interval estimation for the downtime, has never been studied on drilling machines. The research proposed in this paper provides a general method to link downtime analysis with potential component improvement. To increase the statistical accuracy; four case studies was performed in two different mines with completely different working environment and ore properties. Using the above method showed which components need to be improved and suggestions for improvement was proposed and will be implemented accordingly.

sted, utgiver, år, opplag, sider
2014. Vol. 20, nr 4, s. 306-332
HSV kategori
Forskningsprogram
Drift och underhållsteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-16307DOI: 10.1108/JQME-11-2012-0038Scopus ID: 2-s2.0-84918796987Lokal ID: fef58794-bb42-486c-b91b-c626e6eda0d3OAI: oai:DiVA.org:ltu-16307DiVA, id: diva2:989283
Merknad
Validerad; 2014; Bibliografisk uppgift: Hussan S. Al-Chalabi received BEng Degree in Mechanical Engineering from the Mosul University, Iraq in 1994 and MSc Degree in Mechanical Engineering in Thermal Power from the Mosul University, Iraq in 2008. Then he joined the Department of Mechanical Engineering at the Mosul University as a Lecturer. In 2011 he joined the Division of Operation, Maintenance and Acoustics at the LTU as a Doctoral Student. Hussan S. Al-Chalabi is the corresponding author and can be contacted at: hussan.hamodi@ltu.se Jan Lundberg is a Professor of Machine Elements at the Lule°a University of Technology and also in Operation & Maintenance with focus on product development. During the years 1983- 2000, his research concerned mainly about engineering design in the field of machine elements in industrial environments. During the years 2000-2006, his research concerned mainly about industrial design, ergonomic and related problems as cultural aspects of design and modern tools for effective industrial design in industrial environments. From 2006 and forward, his research is completely focused on maintenance issues like methods for measuring failure sources, how to do design out maintenance and how to design for easy maintenance. Dr Andi Wijaya received BEng Degree in Mechanical Engineering from the Gadjah Mada University (GMU), Indonesia in 1998 and MSc Degree in Industrial Ergonomics and Licentiate Degree in Sound and Vibration from the Lulea University of Technology (LTU), Sweden in 2001 and 2003, respectively. Then he joined to the Department of Mechanical and Industrial Engineering at the GMU as a Lecturer. Since 2009, he received PhD Degree from the Division of Operation, Maintenance and Acoustics, Lule°a University of Technology, Sweden in 2012. Behzad Ghodrati is an Associate Professor of Maintenance and Reliability Engineering at the Lule°a University of Technology. He obtained his PhD Degree on “Reliability based spare parts planning” from the Lule°a University of Technology and he was awarded the Postdoctoral Research Fellowship from the University of Toronto in 2008.; 20141015 (hasham)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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