The size prediction and auto-generation of garment template

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Haisang Liu ◽  
Gaoming Jiang ◽  
Zhijia Dong ◽  
Fenglin Xia ◽  
Honglian Cong
Keyword(s):  
Prediction Model ◽  
New Product Development ◽  
Computer Aided Design ◽  
Smooth Curve ◽  
New Product ◽  
Design System ◽  
Content Type ◽  
Computer Aided ◽  
Aided Design ◽  
The Relationship

PurposeThe size prediction of garment is an important part in the process of the garment design and production, and it is also one of the most important features in warp-knitted computer-aided design system. The purpose of this paper is to realize the auto-generation of the garment templates using JavaScript and WebGL technologies, based on the prediction of the size of warp-knitted seamless sportswear.Design/methodology/approachThe warp-knitted jacquard technology is used to produce the warp-knitted seamless sportswear, which is divided into suits and tights. In order to achieve the purpose of this study, the dimensions of four kinds of jacquard patterns knitted under different knitting conditions are measured and the crosswise and longitudinal size shrinkage percentages are also calculated. Then, the relationship between the yarn count and the drawing density as well as the size shrinkage percentage is studied and a size prediction model for warp-knitted jacquard fabric is established. Next, according to the results of the size calculation, the point positions of the garment boundary in the mathematical coordinate system is determined. The color formula is built by the two-dimensional mathematical matrix. Finally, combined with the coordinate position and color information, the template can be drawn automatically.FindingsBased on the size prediction model of warp-knitted garment, the template generation of warp-knitted full-form sportswear on WebGL-enabled web browser is realized, which is proven to be an effective computer-aided design method for warp-knitted garments.Research limitations/implicationsBecause of limited researches, only two groups of yarns and four kinds of jacquard patterns were studied. A vaster database should be built and smooth curve, accurate coordinate needs to be optimized in the further research.Practical implicationsThe size prediction model for warp-knitted jacquard garment and garment template auto-generation of warp-knitted computer-aided design system will simplify the fabric technical design process, shorten design time and improve the efficiency of new product development.Social implicationsThe size prediction model for warp-knitted jacquard garment and garment template auto-generation of warp-knitted computer-aided design system will provide the industries a guidance for new sample development and it also can shorten the development time and lower cost.Originality/valueThis author analyzes the relationship between the size characteristics and knitting technology of warp-knitted jacquard patterns, proposes a model of size prediction and realizes the auto-drawing of the garment template in the warp-knitted CAD system, which provides a reference for the new product design and development of warp-knitted seamless sportswear.

Application of the Taguchi method and new hatch styles for quality improvement in stereolithography

1998 ◽  
Vol 212 (6) ◽  
pp. 461-472 ◽  
Author(s):  
S O Onuh ◽  
K K B Hon
Keyword(s):  
Taguchi Method ◽  
Rapid Prototyping ◽  
New Product Development ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
New Product ◽  
Computer Aided ◽  
Build Time ◽  
Solid Part ◽  
Aided Design

In recent years, rapid prototyping (RP) technology has been implemented in many spheres of industry, particularly in the area of new product development. Rapid prototyping has the capability to produce a tangible solid part, directly from three-dimensional computer aided design (CAD) data, from a range of materials such as photocurable resin, ceramic and metallic powders and paper. However, in most cases, models built in acrylic-based resin in the stereolithography (SL) process have not yielded the desired quality, which has led to a shift in the use of this resin to more expensive ones that have longer build time. An experimental investigation has been carried out to determine statistically the optimum build parameters with the use of the Taguchi method in order to improve the SL product quality. Two new hatch styles have been developed in this study and a confirmation experiment has shown a significant improvement in part accuracy.

Total agile design system model via literature exploration

2009 ◽  
Vol 109 (4) ◽  
pp. 570-588 ◽  
Author(s):  
S. Vinodh ◽  
G. Sundararaj ◽  
S.R. Devadasan
Keyword(s):  
Computer Aided Design ◽  
Design Methodology ◽  
Agile Manufacturing ◽  
System Model ◽  
Design System ◽  
Content Type ◽  
Computer Aided ◽  
Agile Design ◽  
Aided Design ◽  
Practical Implications

PurposeThe purpose of this paper is to explore the researches reported in literature on agile manufacturing (AM) and determine the avenues by which agility can be imparted in traditional sectors.Design/methodology/approachAfter reviewing the literature on AM, it has been found that these papers address AM along as many as 12 directions. The findings of this review are used to design a model called total agile design system (TADS).FindingsThe major finding of the exploration reported in this paper is that, the need of the hour is to sensitize the traditional sectors for acquiring design capabilities compatible for imbibing agility in totality.Research limitations/implicationsThe TADS model proposed has been reviewed only by 25 industry captains. However, this may not affect the credibility of this model as it is designed by referring to a large number of researches reported in peer reviewed articles appeared in leading international journals.Practical implicationsAfter designing, TADS was exposed to 25 industry captains. Their feedback was gathered using a questionnaire. The results of analysis of their feedback indicates the practical compatibility of TADS.Originality/valueIt appears that no researcher has identified the different directions in which AM researches have progressed. Moreover, no researcher has contributed a model to adopt computer aided design (CAD)/computer aided manufacturing (CAM) and rapid prototyping (RP) technologies in totality to achieve agility in manufacturing organisations. As this paper has overcome the absence of these kinds of researches, it is original and valuable.

Business Process Digitalization and New Product Development

2011 ◽  
pp. 49-64 ◽  
Author(s):  
Jun Li ◽  
Michael Merenda ◽  
A.R. Venkatachalam
Keyword(s):  
Product Development ◽  
New Product Development ◽  
Business Process ◽  
Value Chain ◽  
Computer Aided Design ◽  
New Product ◽  
Firm Innovation ◽  
Global Competitiveness ◽  
Aided Design ◽  
The Relationship

Previous research has largely ignored how business process digitalization across the value chain enhances firm innovation. This chapter examines the relationship between the extensiveness of business process digitalization (BPD) and new product development (NPD) in a sample of 85 small U.S. manufacturers. Scores of extensiveness were derived from the number of adopted e-business practices regarding inter and intra-firm activities such as: customer and supplier services (computer-aided design and manufacturing), employee services (education/training), and industry scanning (technology sourcing). The authors found that (1) NPD is positively related to the extensive use of BPD, and (2) the relationship between NPD and the extensiveness of BPD is stronger in more mature firms than that in younger firms. The authors conclude that small and medium-sized enterprise (SME) production innovation strategies are positively associated with the strategic use of BPD and span spatial, temporal, organizational, and industry boundaries thus aiding SME global competitiveness.

scholarly journals An interactive product customization framework for freeform shapes

2017 ◽  
Vol 23 (6) ◽  
pp. 1136-1145 ◽  
Author(s):  
Yunbo Zhang ◽  
Tsz Ho Kwok
Keyword(s):  
Additive Manufacturing ◽  
Computer Aided Design ◽  
Reference Model ◽  
Three Dimensional ◽  
Frame Structure ◽  
Design System ◽  
Content Type ◽  
Additional Tool ◽  
Computer Aided ◽  
Aided Design

Purpose The purpose of this paper is to establish new computer-aided-design (CAD) framework to design custom product that is fabricated additive manufacturing (AM), which can produce complex three-dimensional (3D) object without additional tool or fixture. Additive manufacturing (AM) enables the fabrication of three-dimensional (3D) objects with complex shapes without additional tools and refixturing. However, it is difficult for user to use traditional computer-aided design tools to design custom products. Design/methodology/approach In this paper, the authors presented a design system to help user design custom 3D printable products based on some reference freeform shapes. The user can define and edit styling curves on the reference model using the interactive geometric operations for styling curve. Incorporating with the reference models, these curves can be converted into 3D printable models through the fabrication interface. Findings The authors tested their system with four design applications including a hollow patterned bicycle helmet, a T-rex with skin frame structure, a face mask with Voronoi patterns and an AM-specific night dress with hollow patterns. Originality/value The executable prototype of the presented design framework used in the customization process is publicly available.

Business Process Digitalization and New Product Development

2010 ◽  
pp. 290-305
Author(s):  
Jun Li ◽  
Michael Merenda
Keyword(s):  
Product Development ◽  
New Product Development ◽  
Business Process ◽  
Value Chain ◽  
Computer Aided Design ◽  
New Product ◽  
Firm Innovation ◽  
Global Competitiveness ◽  
Aided Design ◽  
The Relationship

Previous research has largely ignored how business process digitalization across the value chain enhances firm innovation. This chapter examines the relationship between the extensiveness of business process digitalization (BPD) and new product development (NPD) in a sample of 85 small U.S. manufacturers. Scores of extensiveness were derived from the number of adopted e-business practices regarding inter and intra-firm activities such as: customer and supplier services (computer-aided design and manufacturing), employee services (education/training), and industry scanning (technology sourcing). The authors found that (1) NPD is positively related to the extensive use of BPD, and (2) the relationship between NPD and the extensiveness of BPD is stronger in more mature firms than that in younger firms. The authors conclude that small and medium-sized enterprise (SME) production innovation strategies are positively associated with the strategic use of BPD and span spatial, temporal, organizational, and industry boundaries thus aiding SME global competitiveness.

Structural Analysis of Product and Computer-Aided Assembly Planning in AssemBL Software Package

2018 ◽  
pp. 11-33
Author(s):  
A. N. Bozhko
Keyword(s):  
Computer Aided Design ◽  
State Of The Art ◽  
Graph Model ◽  
Design System ◽  
Assembly Planning ◽  
Complex Products ◽  
Assembly Sequences ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design

Computer-aided design of assembly processes (Computer aided assembly planning, CAAP) of complex products is an important and urgent problem of state-of-the-art information technologies. Intensive research on CAAP has been underway since the 1980s. Meanwhile, specialized design systems were created to provide synthesis of assembly plans and product decompositions into assembly units. Such systems as ASPE, RAPID, XAP / 1, FLAPS, Archimedes, PRELEIDES, HAP, etc. can be given, as an example. These experimental developments did not get widespread use in industry, since they are based on the models of products with limited adequacy and require an expert’s active involvement in preparing initial information. The design tools for the state-of-the-art full-featured CAD/CAM systems (Siemens NX, Dassault CATIA and PTC Creo Elements / Pro), which are designed to provide CAAP, mainly take into account the geometric constraints that the design imposes on design solutions. These systems often synthesize technologically incorrect assembly sequences in which known technological heuristics are violated, for example orderliness in accuracy, consistency with the system of dimension chains, etc.An AssemBL software application package has been developed for a structured analysis of products and a synthesis of assembly plans and decompositions. The AssemBL uses a hyper-graph model of a product that correctly describes coherent and sequential assembly operations and processes. In terms of the hyper-graph model, an assembly operation is described as shrinkage of edge, an assembly plan is a sequence of shrinkages that converts a hyper-graph into the point, and a decomposition of product into assembly units is a hyper-graph partition into sub-graphs.The AssemBL solves the problem of minimizing the number of direct checks for geometric solvability when assembling complex products. This task is posed as a plus-sum two-person game of bicoloured brushing of an ordered set. In the paradigm of this model, the brushing operation is to check a certain structured fragment for solvability by collision detection methods. A rational brushing strategy minimizes the number of such checks.The package is integrated into the Siemens NX 10.0 computer-aided design system. This solution allowed us to combine specialized AssemBL tools with a developed toolkit of one of the most powerful and popular integrated CAD/CAM /CAE systems.

Improving new product development performance by risk management

2016 ◽  
Vol 31 (3) ◽  
pp. 418-425 ◽  
Author(s):  
Mehran Salavati ◽  
Milad Tuyserkani ◽  
Seyyede Anahita Mousavi ◽  
Nafiseh Falahi ◽  
Farshid Abdi
Keyword(s):  
Risk Management ◽  
Product Development ◽  
New Product Development ◽  
Small Sample Size ◽  
New Product ◽  
Small Sample ◽  
Content Type ◽  
Total Performance ◽  
The Relationship ◽  
Npd Performance

Purpose The principal aim of this study is to investigate the relationship between technological, marketing, organizational and commercialization risk management on new product development (NPD) performance. Design/methodology/approach Based on questionnaire, the data were collected from a sample of general automotive industry in Iran. Based on theoretical considerations, a model was proposed and descriptive statistic and hierarchical regression were used to measure the relationship between risk management factors and NPD performance. Findings Data analysis revealed that if organization can amplify their knowledge and information about risk and main factors that affect NPD process, not only can they do their work better but can also increase their ability to predict future happenings that affect performance. Research limitations/implications First, due to the relatively small sample size, caution should be exercised when interpreting the results. Second, the data were collected from automotive producer in Iran, which may restrict to some extent generalizability of the findings. Practical implications The results suggest that managers should consider more attention to risk management. If managers spread the risk management in all aspects of the NPD project, total performance will be increased and it can develop the probability of NPD success. Also organizations should perform great market research due to best commercialization. Originality/value Past researches have presented complete information about NPD process. But identifying and considering the effect of the risk management parameters that are connected to the NPD process were the main thrusts to perform the study. In this paper, based on past research about risk management of NPD, the extra aspect of process that can improve total performance of NPD has been examined.

Use of the designer's experience in systems of computer-aided design and artificial intelligence

2021 ◽  
pp. 89-95
Author(s):  
А.И. Гайкович ◽  
С.И. Лукин ◽  
О.Я. Тимофеев
Keyword(s):  
Artificial Intelligence ◽  
Fuzzy Sets ◽  
Computer Aided Design ◽  
Design Tool ◽  
Design System ◽  
Design Problems ◽  
General Arrangement ◽  
Computer Aided ◽  
A Chain ◽  
Aided Design

Процесс создания проекта судна или корабля рассматривается как преобразование информации, содержащейся в техническом задании на проектирование, нормативных документах и знаниях проектанта, в информацию, объем которой позволяет реализовать проект. Проектирование может быть представлено как поиск решения в пространстве задач. Построение цепочки последовательно решаемых задач составляет методику проектирования. Проектные задачи могут быть разбиты на две группы. Первая группа ‒ это полностью формализуемые задачи, для решения которых есть известные алгоритмы. Например, построение теоретического чертежа по известным главным размерениям и коэффициентам формы. Ко второй группе задач можно отнести трудно формализуемые или неформализуемые задачи. Например, к задачам этого типа можно отнести разработку общего расположения корабля. Важнейшим инструментом проектирования современного корабля или судна является система ав­томатизированного проектирования (САПР). Решение САПР задач первой группы не представляет проблемы. Введение в состав САПР задач второй группы подразумевает разработку специального ма­тематического аппарата, базой для которого, которым является искусственный интеллект, использующий теорию нечетких множеств. Однако, настройка искусственных нейронных сетей, создание шкал для функций принадлежности элементов нечетких множеств и функций предпочтений лица принимающего решения, требует участие человека. Таким образом, указанные элементы искусственного интеллекта фиксируют качества проек­танта как специалиста и создают его виртуальный портрет. The process of design a project of a ship is considered as the transformation of information contained in the design specification, regulatory documents and the designer's knowledge into information, the volume of which allows the project to be implemented. Designing can be represented as a search for a solution in the space of problems. The construction of a chain of sequentially solved tasks constitutes the design methodology. Design problems can be divided into two groups. The first group is completely formalizable tasks, for the solution of which there are known algorithms. For example, the construction of ship's surface by known main dimensions and shape coefficients. Tasks of the second group may in­clude those which are difficult to formalize or non-formalizable. For example, tasks of this type can include develop­ment of general arrangement of a ship. The most important design tool of a modern ship or vessel is a computer-aided design system (CAD). The solu­tion of CAD problems of the first group is not a problem. Introduction of tasks of the second group into CAD implies development of a special mathematical apparatus, the basis for which is artificial intelligence, which uses the theory of fuzzy sets. However, the adjustment of artificial neural networks, the creation of scales for membership functions of fuzzy sets elements and functions of preferences of decision maker, requires human participation. Thus, the above elements of artificial intelligence fix the qualities of the designer as a specialist and create his virtual portrait.

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