CAD/CAPP Integration using Feature Ontology (original) (raw)
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Enhancement of CAD model interoperability based on feature ontology
As the networks connect the world, enterprises tend to move manufacturing activities into virtual spaces. Since different software applications use different data terminology, it becomes a problem to interoperate, interchange, and manage electronic data among heterogeneous systems. According to RTI, approximately one billion dollar has been being spent yearly for product data exchange and interoperability. As commercial CAD systems have brought in the concept of design feature for the sake of interoperability, terminologies of design features need to be harmonized. In order to define design feature terminology for integration, knowledge about feature definitions of different CAD systems should be considered. STEP standard have attempted to solve this problem, but it defines only syntactic data representation so that semantic data integration is not possible. This paper proposes a methodology for integrating modeling features of CAD systems. We utilize the ontology concept to build a data model of design features which can be a semantic standard of feature definitions of CAD systems. Using feature ontology, we implement an integrated virtual database and a simple system which searches and edits design features in a semantic way.
Ontological CAD Data Interoperability Framework
SEMAPRO 2010, The Fourth International Conference …, 2010
Computer Aided Design (CAD) has become one of the fundamental activities in the modern industry. Nowadays several products are developed and modeled using this technology. Nevertheless, extracting product features from these kind of files to use them in production processes and parametric data exchange among heterogeneous CAD systems are still difficult to achieve. This work aims to propose OWL as CAD Data Exchange Format, giving the possibility for the addition of more descriptive information of products and processes in one self-content and self-descriptive file. With this CAD-OWL integration the feature extraction is facilitated, because this CAD-OWL model becomes a Knowledge Base and the reasoning tools of the Semantic Web become available. In this work a standard CAD file was mapped into the Web Ontology Language (OWL) and visualized using the Protégé API's architecture in order to deal with such problems.
An Ontology based Approach for Assisting Conceptualisation in CAD Processes
Proceedings of the International Conference on Knowledge Engineering and Ontology Development, 2014
This paper continues development of ontological approach to conceptual visual design aided by computer. Design ideas during the conceptualization phase are externalized by the designer in the form of diagrams on the monitor screen and automatically transformed by the system into data structures being hyper-graphs. Hyper-graph structures are combined with logic-based knowledge representation techniques. Different types (sorts) are used to represent knowledge from diagrams and many-sorted first order languages for their formal specification. The paper is the next attempt to formalize ontology-based knowledge framework for CAD process. The proposed method is illustrated with an exemplary of design of floor-layouts aided by the prototype of the System, so called HSSDR (Hyper-graph System Supporting Design and Reasoning).
Prototype of semantic interoperability between different modalities of 2D-CAD design
The diffusion of specific computational tools for Architecture, Engineering and Construction (AEC) has generated a great amount of digital data in the last years. However, it is necessary for the sector to promote a standardization of such data so that they can be shared among the participants and partners of a design project. Trying to correct the problem of information exchange and mainly of data interoperability, a research project was carried out within design offices in the south of Brazil, identifying the problems and quantifying losses according to the lack of interoperability. For generation of information starting from the CAD design and as a way of enlarging the communication among the partners, a study was held about the use of the IFC classes (Industry Foundation Classes) – a pattern used to transfer data among design modalities. The result was an application of syntactic conversion of attributes of the IFC classes for XML, to attest the viability of technical integration and to transfer information to a web-based environment. As a result of the investigation, a prototype was elaborated for transferring information from CAD design to web-based applications. By using IFC classes, a program was developed in Java language for the syntactic and semantic exchange, with the automatic conversion of the information for standard XML. It was observed that the decrease of interoperability problems, checking the viability of technical integration of the design with the shared information through the web.
Towards the design of intelligent CAD systems: An ontological approach
Advanced Engineering Informatics, 2007
Although many sophisticated CAD integrated environments have been developed and are currently adopted by enterprises in the design of mechanical parts and components, such kinds of tools should be extended in order to reach higher levels of performance. To this aim, Artificial Intelligence techniques are particularly suitable to provide CAD tools with a sort of ''intelligence'' typical of human experts. In particular a complex mechanical object to be designed exploiting CAD systems can be considered as an aggregation of simpler components that have to be put together in order to satisfy precise design rules owned by expert designers core knowledge. This paper presents an ontological approach to the problem of representing relationships among step-by-step more complex parts, in order to obtain a final product that fully meets initial requirements.
IFIP Advances in Information and Communication Technology, 2016
The semantic interoperability of information has become increasingly important in Product Development Process (PDP) to support different phases during the product development. This article presents a proposal of an Interoperable Product Design and Manufacturing System (IPDMS) concept based on a set of engineering domain ontologies and sematic mapping approaches. The concept explores the potentials of semantic well-defined core-foundations in a Semantic Web ontology language. The formal core-foundations can be specialised to perform application view in Product or Manufacturing Model. The application view is used to support the information sharing between product design and manufacturing and verify the accordance with product requirements. A preliminary experimental has been realised, using a test case to share information from the design to manufacturing of an injection moulding plastic. As results, it was identified potential benefits and limitations. The mains contributions are: semantic interoperability during information sharing in PDP and analysis of inconsistencies in PDP.
FIDOE: A Framework for Intelligent Distributed Ontologies in Engineering
Volume 3: 28th Computers and Information in Engineering Conference, Parts A and B, 2008
This paper presents FIDOE, a Framework for Intelligent Distributed Ontologies in Engineering. FIDOE consists of a suite of logic rules and templates for interactively developing relationships between properties of linked ontologies. The logical rules embedded in FIDOE automatically operate on various discipline-specific ontologies to systematically identify influences, direct and indirect, of proposed design modifications on other aspects of the design through common domain concepts. Once potential influences are identified, FIDOE enables the user to precisely define the domain relationships, using predefined templates, between the identified domain concepts that enumerate influence types. This tool, thus, provides a pervasive, real time awareness of the implications of design changes during the design process in a distributed environment.
Ontologies as an interface between different design support systems
The aim of the present paper is to shortly review the problem field the companies are facing as the information should flow between different design support systems and introduce an approach to solve some of the arising problems. The CoreOntology forms the information structure for the Knowledge Base (KB) and standardizes the communication interface for the design support systems. In the present paper, an approach is proposed to share platform independent product, process and system related knowledge between the different design support systems through the KB.
Development of an approach for Knowledge-Based System for CAD modelling
Materials Today: Proceedings, 2018
In the process of reducing the production cost and satisfying the customer and to sustain in the current volatile market, the manufacturing companies are looking for alternate processes and methods of designing and manufacturing. The conventional CAD/CAM tools are developed to meet the general needs of the market, but not the rapid or specific requirements of the market or customer. Consequently, the companies are looking to customize or tailor the CAD/CAM tools to improve their effectiveness. For this reason, the scope of research in the field of customization of designing tools has improved rapidly in the recent time. This paper discusses an introductory approach for developing an knowledge based system for CAD modelling using customization process of an CAD/CAM tool. The intension behind the development of the system is to reduce the production time and cost. The effectiveness of the proposed system has been examined using an industrial case study.
The study illustrated in this paper aims at analyzing the knowledge management issue related to product development. Especially, the focus is on the domains in which Knowledge- based Systems (KBE) and Design Automation (DA) tools could be adopted.In the past various studies, a lot of KBE and DA systems have been developed in multiple fields such as automotive, aerospace, energy, materials and manufacturing: the information treated in these studies are about data relatives to specific design, for example, of automotive engine compo- nents, aircraft structures, energy plants, advanced material and manufacturing or assembly lines. In all of these domain the organization and formalization of the knowledge is a critical issue. The adoption of a good strategy to manage data and information relative to products and processes involves benefits in the product development process. Different methodologies are described in literature.The two of the most used are the Object-Oriented (OO) and Ontology Engineering (OE) approaches. The former is one of the most common and adopted in the industrial domain, including a lot of implementations in the recent past years. The latter is more commonly used in other fields, like bio-engineering, used with the scope of man- agement of experimental data; few implementation in industrial engineering have been considered. brief description of the state of the art about Knowledge Based The article considers a ∗Address all correspondence to this author. †Address all correspondence to this author. Engineering and Ontology Engineering. A case studies will be described and the benefits and disadvantages due to the use of the different methodologies will be discussed.