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1 – 5 of 5Wang Guangchun, Li Huiping, Guan Yanjin and Zhao Guoqun
In recent years, rapid prototyping (RP) and rapid tooling (RT) technologies have been implemented in many aspects of industry, especially in the area of new product development…
Abstract
In recent years, rapid prototyping (RP) and rapid tooling (RT) technologies have been implemented in many aspects of industry, especially in the area of new product development. Based on RP and RT technologies, the paper proposes a rapid design and manufacturing system of the product. There are two ways to develop a new product in this system. One is beginning with a design concept, and another is from a sample as a reference. The reverse engineering technology, transmission processing software or modules of the input data, structure analysis and optimization means and manufacturing process analysis tools were integrated in the system. Some examples show that the integrated system not only can reduce the number of design iterations but also improve the efficiency and reliability of the product design.
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Luis Lisandro Lopez Taborda, Heriberto Maury and Jovanny Pacheco
There are many investigations in design methodologies, but there are also divergences and convergences as there are so many points of view. This study aims to evaluate to…
Abstract
Purpose
There are many investigations in design methodologies, but there are also divergences and convergences as there are so many points of view. This study aims to evaluate to corroborate and deepen other researchers’ findings, dissipate divergences and provide directing to future work on the subject from a methodological and convergent perspective.
Design/methodology/approach
This study analyzes the previous reviews (about 15 reviews) and based on the consensus and the classifications provided by these authors, a significant sample of research is analyzed in the design for additive manufacturing (DFAM) theme (approximately 80 articles until June of 2017 and approximately 280–300 articles until February of 2019) through descriptive statistics, to corroborate and deepen the findings of other researchers.
Findings
Throughout this work, this paper found statistics indicating that the main areas studied are: multiple objective optimizations, execution of the design, general DFAM and DFAM for functional performance. Among the main conclusions: there is a lack of innovation in the products developed with the methodologies, there is a lack of exhaustivity in the methodologies, there are few efforts to include environmental aspects in the methodologies, many of the methods include economic and cost evaluation, but are not very explicit and broad (sustainability evaluation), it is necessary to consider a greater variety of functions, among other conclusions
Originality/value
The novelty in this study is the methodology. It is very objective, comprehensive and quantitative. The starting point is not the case studies nor the qualitative criteria, but the figures and quantities of methodologies. The main contribution of this review article is to guide future work on the subject from a methodological and convergent perspective and this article provides a broad database with articles containing information on many issues to make decisions: design methodology; optimization; processes, selection of parts and materials; cost and product management; mechanical, electrical and thermal properties; health and environmental impact, etc.
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Boppana V. Chowdary and Deepak Jaglal
This paper aims to present a reverse engineering (RE) approach for three-dimensional (3D) model reconstruction and fast prototyping (FP) of broken chess pieces.
Abstract
Purpose
This paper aims to present a reverse engineering (RE) approach for three-dimensional (3D) model reconstruction and fast prototyping (FP) of broken chess pieces.
Design/methodology/approach
A case study involving a broken chess piece was selected to demonstrate the effectiveness of the proposed unconventional RE approach. Initially, a laser 3D scanner was used to acquire a (non-uniform rational B-spline) surface model of the object, which was then processed to develop a parametric computer aided design (CAD) model combined with geometric design and tolerancing (GD&T) technique for evaluation and then for FP of the part using a computer numerical controlled (CNC) machine.
Findings
The effectiveness of the proposed approach for reconstruction and FP of rotational parts was ascertained through a sample part. The study demonstrates non-contact data acquisition technologies such as 3D laser scanners together with RE systems can support to capture the entire part geometry that was broken/worn and developed quickly through the application of computer aided manufacturing principles and a CNC machine. The results indicate that design communication, customer involvement and FP can be efficiently accomplished by means of an integrated RE workflow combined with rapid product development tools and techniques.
Originality/value
This research established a RE approach for the acquisition of broken/worn part data and the development of parametric CAD models. Then, the developed 3D CAD model was inspected for accuracy by means of the GD&T approach and rapidly developed using a CNC machine. Further, the proposed RE led FP approach can provide solutions to similar industrial situations wherein agility in the product design and development process is necessary to produce physical samples and functional replacement parts for aging systems in a short turnaround time.
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Facundo Pieniazek, Agustina Roa Andino and Valeria Messina
Measuring texture parameters are time consuming and expensive; it is necessary to develop an efficient and rapid method to evaluate them. Image analysis can be a useful tool. The…
Abstract
Purpose
Measuring texture parameters are time consuming and expensive; it is necessary to develop an efficient and rapid method to evaluate them. Image analysis can be a useful tool. The purpose of this paper is to predict texture parameters in different beef cuts applying image analysis techniques.
Design/methodology/approach
Samples were analyzed by scanning electron microscopy. Texture parameters were analyzed by instrumental, image analysis techniques and by Warner–Bratzler shear force.
Findings
Significant differences (p<0.05) were obtained for image and instrumental texture features. Higher amount of porous were observed in freeze dried samples of beef cuts from Gluteus Medius and semintendinosus muscles. A linear trend with a linear correlation was applied for instrumental and image texture. High correlations were found between image and instrumental texture features. Instrumental parameters showed a positive correlation with image texture feature.
Originality/value
This research suggests that the addition of image texture features improves the accuracy to predict texture parameter. The prediction of quality parameters can be performed easily with a computer by recognizing attributes within an image.
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Anne Touboulic and Lucy McCarthy
The purpose of this paper is to explore the current focus of supply chain management (SCM) research; it considers field level and societal constraints and consequently the…
Abstract
Purpose
The purpose of this paper is to explore the current focus of supply chain management (SCM) research; it considers field level and societal constraints and consequently the potential for change. It details the underlying assumptions in the field, considering the dominant paradigms and stakeholders, and how this has shaped the research we have engaged in as a community of scholars.
Design/methodology/approach
This is a reflective inquiry that seeks to deconstruct the dominant discourses and paradigms in SCM. It offers alternative avenues of inquiry to “traditional” research, considering how different questions, perspectives and approaches might yield different learning for the field. offering alternative avenues to traditional research.
Findings
This is a call for collective action, for solidarity, for a re-imagining of what research in SCM could look like. Research activism is challenging and potentially risky but necessary for the research community to engage in, particularly in light of the global societal grand challenges. Change can take place in the SCM field through collective action and solidarity. Three levels of activism are explored here – acting to solve the grand challenges, acting to change the field and acting as individuals.
Originality/value
This is a “speak-out” piece, which embraces and encourages reflexivity, new methods of doing and writing research as well as different perspectives, and especially a consideration for context and multiple players in the supply chain. The authors contend that it is urgent to re-appropriate our own agency as SCM researchers.
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