Soonjo Kwon

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Verified

Soonjo verified their affiliation via an institutional email.

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• Ph.D.
• Professor (Assistant) at Kumoh National Institute of Technology

OntoSTEP is a method to translate the STandard for the Exchange of Product model data (STEP) schema and its instances to an ontology and knowledge graphs represented in the Web Ontology Language (OWL). OntoSTEP models can be integrated with any OWL models to enrich their semantics. However, the current implementation has several limitations , mainl...

Additive manufacturing (AM) has brought positive opportunities with phenomenal changes to traditional manufacturing. Consistent efforts and novel studies into AM use have resolved critical issues in manufacturing and broadened technical boundaries. Build time estimation is one of the critical issues in AM that still needs attention. Accurate build...

In comparison to traditional manufacturing, Additive Manufacturing (AM) provides unique capability to create complex part geometries. However, AM often suffers from its own limitations, such as the need for support structures, the presence of the stair-step effect and long build time. Recently, Part Decomposition (PD) techniques have been deployed...

Realizing the digital thread is essential for linking and orchestrating data across the product lifecycle in smart manufacturing. Linking heterogeneous lifecycle data is critical to maintain associativity and traceability in a digital thread. Recently, researchers have successfully leveraged ontology models with knowledge graphs in engineering doma...

A model simplification technique is required to control the level of detail (LOD) of a three-dimensional (3D) computer-aided design (CAD) model. In particular, to simplify a B-rep model, volume decomposition operations are performed to decompose the model into volumes, and the decomposed volumes are then sequentially removed according to their impo...

This paper introduces a hybrid optimization method that leverages either linear programming (LP) or a genetic algorithm (GA) based on the problem size to enhance the parallel additive manufacturing (AM) process for ship models. The LP ensures optimality but can experience exponential increases in the computation time as the problem size grows. To a...

With the recent growth of electrical and electronic systems such as electric vehicles, the demand for automatic cable routing for electrical wiring design is increasing. However, real industry use cases of automatic cable routing are still rare especially in three-dimensional design. In this study, we propose a new pathfinding algorithm, JPS-Theta*...

This paper presents a cost-effective approach for the production of small-scale ship models, particularly suitable for model testing of high-speed vessels characterized by a high Froude number. In contrast to traditional approach employed in ship model production, the proposed approach uses 3D printing technology integrated with modularity. This st...

Point clouds are acquired primarily using 3D scanners and are used for product inspection and reverse engineering. The quality of the point cloud varies depending on the scanning environment and scanner specifications. The quality of the point cloud has a significant impact on the accuracy of automatic or manual modeling. In response, various point...

Point cloud upsampling is a process of increasing the point density to represent an object or environment effectively. Recent studies have focused on deep learning-based approaches that learn mapping from a sparse to a dense region of the point cloud. Self-supervised learning-based upsampling techniques have gained attention due to their capability...

Passengers escaping from a sinking or inclined ship inevitably choose the transversal, upward, and downward routes and the coupled route where two statuses coexist. A passenger's travel speed varies greatly depending on individual characteristics, as well as the environmental factors, such as the inclination of the ship and the route status. In thi...

Augmented reality (AR) has already helped manufacturers realize value across a variety of domains, including assistance in maintenance, process monitoring, and product assembly. However, coordinating traditional engineering data representations into AR systems without loss of context and information remains a challenge. A major barrier is the lack...

Currently, high-rise buildings are being continuously constructed, and thus, it is necessary to predict evacuation safety in advance in case of emergency situations in high-rise buildings. However, current studies focus only on the movement of individuals in evacuation situations for predicting the final evacuation time. Therefore, in this study, a...

Engineering change is a significant cost for projects. While avoiding and mitigating the risk of change is ideal, mistakes and improvements are recognised as more is learned about the decisions made in a design. This paper presents a feasibility and performance analysis of automating engineering change requests to demonstrate the promise for increa...

Computer-aided design, engineering, and manufacturing (CAx) have improved product design and development. The associativity of revised design in native files for downstream applications, assembly design, finite element analysis, and numerical control (NC) manufacturing has been supported by homogeneous CAx systems. However, heterogeneous CAx enviro...

Boundary representation (B-rep) is one of the most common techniques for representing three-dimensional (3D) shapes. In this method, shapes are described mathematically based on the vertices, edges, and faces present. B-rep models are generated using computer-aided design systems and are employed for various purposes in downstream applications, inc...

Three-dimensional (3D) computer-aided design (CAD) models require different levels of detail (LODs) depending on their purpose. Therefore, it is beneficial to automatically simplify 3D CAD assembly models to meet the desired LOD. Feature-based 3D CAD assembly models typically have the lowest and highest feasible limits of LOD during simplification....

Feature-based translation of computer-aided design (CAD) models allows designers to preserve the modeling history as a series of modeling operations. Modeling operations or features contain information that is required to modify CAD models to create different variants. Conventional formats, including the standard for the exchange of product model d...

In industrial plants, an increasing need has emerged for visualization through three-dimensional (3D) models throughout all lifecycle stages. Lightweight modeling has garnered attention for improved visualization performance. The data size of an entire process plant model is enormous, and the final model consists of various forms of equipment and m...

To evaluate the environmental performance of manufacturing systems, practitioners often deploy ad-hoc methods or implement one-off solutions that are difficult to replicate in similar scenarios. Such situations can drive-up costs and cause significant delays. Hence, there is a strong need for standard methods that help describe and replicate enviro...

Integrating environmental sustainability assessment into parametric design presents an opportunity for enabling sustainable product design. However, this is a challenging task as quantitative methods for sustainability assessment are poorly integrated with parametric design and optimization tools. Furthermore, current streamlined approaches for com...

Feature-based translation can preserve the parameters associated with each feature during the process of CAD data exchange. Current interoperability solutions are limited, can’t ensure 100% exchange results, and suffer from multiple problems. A well-known problem in CAD systems is persistent naming of topological entities. TransCAD, a feature-based...

Product development process is recursive while requiring many collaborators and partner throughout the process. The recursive nature of the process requires product data to be shared recurrently whereas the issue of copyright may occur due to the data transfer. The standard formats for data exchange have been defined to accommodate the copyright is...

TransCAD is a specialized CAD system for data exchange that is based on a set of standard modeling commands through which macro file of a CAD model is exchanged. A problem in CAD data exchange has been the consistency of persistent identifiers among different commercial CAD systems. Identifiers serve the purpose of unique and unambiguous naming for...

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Computer-Aided Design (CAD) product data integration is essential for applications in Computer Aided Engineering/Manufacturing (CAE/CAM). The data integration problem becomes acute when the geometric modeling work is outsourced for a project. These geometries will then be imported for the project. The product design is based on a recursive method w...

The history-based translator, TransCAD, is a specialized CAD system for exchange. It is based on a set of standard modelling commands through which the macro file of a CAD model is exchanged. A problem in CAD data exchange has been the consistency of persistent identifiers among different commercial CAD systems. Identifiers serve the purpose of uni...

In process plant construction projects, a library for equipment and material catalogs should be constructed to support plant design using a plant 3D CAD system. In practice, catalogs are manually generated; this is error-prone and time-consuming. Therefore, developing a system to automatically create catalogs with reduced human intervention is nece...

Collaborative engineering design is a time-consuming process because the collaborative partners are spatially distant and familiar with divergent software solutions due to their local circumstances. The data compatibility problem rises between collaborating groups because each group uses a particular software solution that is different from other g...

In a nuclear power plant, classification is a key tool to manage equipment and materials. There could be different classifications corresponding to the different lifecycle phases and the challenge is to achieve and maintain interoperability, continuity, traceability between them. Therefore, it is important to define the equipment and materials clas...

In recent times, there is a growing demand for technologies that control the level of detail (LOD) of large-scale three-dimensional (3D) computer-aided design (CAD) models. In particular, in industrial plants and in the construction industry, there is a significant need for simplification of large-scale models, because the number of models to be de...

The level of detail required for a three-dimensional computer-aided design model varies according to its purpose. Thus, it is necessary to develop an automated method for controlling the level of detail of three-dimensional computer-aided design models to facilitate the use of three-dimensional computer-aided design models in different application...

Effective data exchange among the diverse stakeholders participating in a process plant project is an important issue. ISO 15926 is an international standard to support sharing and integrating of process plant data. iRINGTools is an ISO 15926-based tool used to exchange plant data. To exchange plant data using iRINGTools, the mapping between the da...

Three-dimensional computer-aided design (3D CAD) models with different levels of detail (LOD) are used in various industries for numerous purposes. Therefore, it is necessary to develop techniques to simplify 3D CAD models in order to adjust the LOD of the model according to its purpose. The main purpose of simplification is to minimize the change...

Process plants are designed and constructed by engineering, procurement, and construction companies, which order various types of equipment to be installed in them. Equipment manufacturers design and produce the ordered equipment, and deliver it to the customer. Therefore, equipment information sharing between them is an important issue for enginee...

The required level of detail (LOD) of a three-dimensional computer-aided design (3D CAD) model differs according to its purpose. It is therefore important that users are able to simplify a highly complex 3D CAD model and create a low-complexity one. The simplification of a 3D CAD model requires the application of a simplification operation and eval...

In the design process for ship outfitting and offshore plants, an equipment catalog database is compiled in order for shipyards to reutilize data effectively. However, the current procedure for building such a catalog causes wastage of time because the modelers in the shipyard must perform manual modeling of the 3D CAD data in order to decrease the...

It is necessary to construct an equipment catalog in plant design. A different level of detail may be needed for the three-dimensional (3D) computer aided design (CAD) data for equipment, depending on the purpose. Equipment suppliers provide CAD data with high complexity, whereas plant designers need CAD data with low complexity. Therefore, it is n...

It is necessary to construct equipment catalog in ship outfitting design and offshore plant design. The three-dimensional CAD data of equipment take on different level-of-detail depending on the purpose. Equipment suppliers provide CAD data with high complexity while ship designers need CAD data with low complexity. Therefore, it is necessary to si...