scholarly journals Development of Korean Condition Based Maintenance Systems to Monitor Naval Weapon Systems

2016 ◽  
Vol 10 (4) ◽  
pp. 67-74
Author(s):  
Kyungwon Oh
Keyword(s):  
Condition Based Maintenance ◽  
Weapon Systems ◽  
Maintenance Systems

Ontology Based Knowledge Processing in Condition Based Maintenance System

2012 ◽  
Vol 249-250 ◽  
pp. 533-541
Author(s):  
Gui Yang Jin ◽  
Fu Zai Lv ◽  
Zhan Qin Xiang
Keyword(s):  
Good Condition ◽  
Heterogeneous Data ◽  
Condition Based Maintenance ◽  
Manufacturing Companies ◽  
Continuous Increase ◽  
Maintenance Costs ◽  
Iron And Steel ◽  
Heterogeneous Data Sources ◽  
Maintenance Systems ◽  
Machine Readable

Many capital-intensive industries such as iron and steel, energy, refining, petrochemical and manufacturing companies have the pressure of continuous increase in maintenance costs. In recent years, condition based maintenance becomes an important tool for reducing maintenance costs in these industries. It is a very information intensive domain. Good condition based maintenance systems need to integrate multiple heterogeneous data sources. In this paper, we will use ontology to describe the semantics of condition based maintenance concepts. It serves two main purposes: (1) offering a common understanding of the condition based maintenance domain, and (2) the knowledge held in the ontology is machine-readable and explicit, thus making the knowledge easy to be processed and reused.

scholarly journals Topology Optimisation for High Frequency Vibration Energy Harvesting

2021 ◽  
Keyword(s):  
Energy Harvesting ◽  
High Frequency ◽  
Energy Harvester ◽  
Spring Steel ◽  
Condition Based Maintenance ◽  
Vibration Energy ◽  
Topology Optimisation ◽  
Vibration Energy Harvesting ◽  
Piezoelectric Energy ◽  
Maintenance Systems

Abstract. Topology optimisation has been used to design a piezoelectric energy harvester capable of harvesting the vibration present on a helicopter gearbox. The gearbox vibrations, with frequencies in the kilo-hertz range and having amplitudes of 10-100g (where g = 9.81 m/s2), are generated by gear-meshing within the transmission. These accelerations, large in amplitude and high in frequency, are ideal sources for vibration energy harvesting, with the harvested power potentially used to power autonomous condition-based-maintenance systems. This paper will discuss the first and simplest of the harvesters that were designed and manufactured, i.e. a 0.51 mm thick spring steel cantilever that uses a Pz27 piezoceramic transducer, which is sensitive to 1900 Hz gearbox vibrations and can produce 300 µW from a 2g host acceleration.

Sign in / Sign up

Export Citation Format

Share Document