Abstract
In this paper, ontology technology has been used in the development and design of learning contents environment. When learning contents environment is designed, ontology technology plays an important role in the structuring of mechanical design knowledge. By doing this, the tacit information will be made clear and understandable that solves the problem of knowledge sharing and reusing. Particularly, knowledge of mechanical field is arranged from the view point of education and training where by index based on ontology is attached to knowledge contents, thus, enabling the management of knowledge and for the purpose of personnel training or education.
