Sökning: "maintenance service level"

Visar resultat 1 - 5 av 46 avhandlingar innehållade orden maintenance service level.

1. 1. Winter maintenance and cycleways

   Författare :Anna Bergström; KTH; []
   Nyckelord :cycleways; winter maintenance; maintenance service level; mode choice; winter cycling frequency; winter road condition assessment; bicycle measurements; friction measurement; winter maintenance equipment;

   Sammanfattning : Increasing cycling as a means of personal travel couldgenerate environmental benefits if associated with acorresponding decrease in car-based transport. In seeking topromote cycling in wintertime, it is desirable to understandhow important the road surface condition is compared to otherfactors in people's decision to cycle or not. LÄS MER

3. 2. On the establishment of a data-driven approach to gravel road maintenance

   Författare :Keegan Mbiyana; Mirka Kans; Lars Håkansson; Jaime Campos; Ramin Karim; Linnéuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gravel road; condition assessment; conceptual modelling; condition classification; data acquisition; data-driven methods; field experiment; literature review; maintenance; visual assessment; Maskinteknik; Mechanical Engineering;

   Sammanfattning : Gravel roads are essential for economic development as they facilitate the movement of people, transportation of goods and services, and promote cultural and social development. They typically connect sparsely populated rural areas to urban centres, providing essential access for residents and entrepreneurs. LÄS MER

4. 3. Data-driven models for railway track geometry maintenance

   Författare :Hamid Khajehei; Alireza Ahmadi; John Andrews; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Data-driven models; degradation; maintenance; tamping; track geometry; planning and scheduling; railway infrastructure; Drift och underhållsteknik; Operation and Maintenance;

   Sammanfattning : Railways are currently experiencing higher demands on safety, infrastructure performance, network capacity and service quality, etc. As a result, a high level of track availability, service quality and infrastructure robustness against unexpected events is required, at reduced cost, to meet the demands. LÄS MER

5. 4. Intelligent fault diagnosis and predictive maintenance for a bearing ring grinder

   Författare :Muhammad Ahmer; Pär Marklund; Fredrik Sandin; Kim Berglund; Martin Gustafsson; Peter Krajnik; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; analysis; grinding machines; diagnostics; predictive maintenance; condition monitoring; intelligent fault diagnosis; Maskinelement; Machine Elements;

   Sammanfattning : Predicting the failure of any structure is a difficult task in a mechanical system. However complicated and difficult the prediction might be, the first step is to know the actual condition of the system. LÄS MER

7. 5. Cost-effective maintenance of railway track geometry : a shift from safety limits to maintenance limits

   Författare :Iman Arasteh Khouy; Peter Veit; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance Engineering;

   Sammanfattning : Railway infrastructure is a complex system which comprises different subsystems. Long life span is one of the important aspects of this prime mode of transport. However, the useful life of its assets is highly dependent on the maintenance and renewal strategy used during the assets’ life cycle. LÄS MER