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1 – 10 of over 216000Examines the tenth published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects. Subjects…
Abstract
Examines the tenth published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects. Subjects discussed include cotton fabric processing, asbestos substitutes, textile adjuncts to cardiovascular surgery, wet textile processes, hand evaluation, nanotechnology, thermoplastic composites, robotic ironing, protective clothing (agricultural and industrial), ecological aspects of fibre properties – to name but a few! There would appear to be no limit to the future potential for textile applications.
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TamilSalvi Mari, Jin Liew and Veronica Ng
The study aims to explore factors affecting stilt construction and the possibilities of using innovative materials and construction methods to re-establish the traditional stilt…
Abstract
Purpose
The study aims to explore factors affecting stilt construction and the possibilities of using innovative materials and construction methods to re-establish the traditional stilt structures.
Design/methodology/approach
The study employs a qualitative research method using an in-depth interview with selected architects to document experience and insights of the architects on the challenges and possibilities of using innovative materials and construction methods to re-establish the traditional stilt structures. Purposive sampling was used to determine the respondents for the study. Architects with experience designing stilt houses in architects' architectural practice were selected to take in the study.
Findings
Study revealed that generally architects are keen on using stilt structures. Building materials and costs associated with designing and constructing stilt structures were identified as the key challenges. However, architects suggest using recycled building materials as possible solutions to encourage the construction of stilt structures in Malaysia. The architects also preferred to use hybridized recycled materials for stilt structures as hybridized materials have improved structural properties and functions. Additionally, the study identified “psychological hesitation” or “accessibility” as a factor affecting the construction of stilt buildings.
Research limitations/implications
Throughout this study, some limitations have been dealt with. The first is the limitation of sample size. Contemporary stilt architecture is not very common in Malaysia today, and not many architects have experience in designing stilt houses. Although the method of purposive sampling was used, a larger sample size could have generated a more diverse result. The second limitation is the dearth of research on contemporary stilt houses in Malaysia. As stilt construction is uncommon in Malaysia and the existing material focuses primarily on traditional Malay houses, this has been one of the major challenges. Finally, most of the literature on stilt construction is from Southeast Asia, limited or insufficient studies and literature on local stilt construction would have a greater benefit to the study.
Practical implications
The outcomes from this study would benefit the scholars who have an interest in exploring stilts construction in contemporary architecture as well as innovative construction materials and construction methods. As the study brings forth the challenges and possibilities of restoring the traditional stilt constructions, the study can be used as a reference by designers to garner a deeper understanding of the traditional stilt construction and encourage designers to focus on possible innovations for stilt construction from the aspects of materials and methods in ensuring the traditional element is present in future design and construction.
Originality/value
The study is a response to an obvious dearth body of knowledge in stilt construction in the Malaysian context. The study identifies the key challenges and possible and practical solutions. The findings of this study represent a scholastic effort that can be used as a reference by academics and scholars.
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Rudrajeet Pal and Håkan Torstensson
Concurrent designing of products, processes and supply chains (three‐dimensional concurrent engineering (3‐DCE)) has proved to be beneficial in rendering holistic…
Abstract
Purpose
Concurrent designing of products, processes and supply chains (three‐dimensional concurrent engineering (3‐DCE)) has proved to be beneficial in rendering holistic, market‐responsive architecture to organizations through linkages created by dynamic capability development and innovation. The purpose of this paper is to investigate the promises of 3‐DCE in synthesizing and sustaining critical success factors (CSFs) for organizations, and also to underpin the existing gap between its offerings in devising the CSFs and the “real solutions” essential in a dynamic system's perspective.
Design/methodology/approach
The paper adopts an intermediary approach combining both explanatory and exploratory researches. The conceptual framework of the paper is based on a matrix for organizational mapping of textile, clothing and fashion (TCF) firms prepared through content analysis. This is followed by an extensive semi‐structured survey. The selection of firms was based on contacting TEKO and Europages. Usable responses were obtained from 42 firms for detailed analysis, making the response rate around 15 percent.
Findings
The results were manifold. It showed that most of the key success factors are synthesized and sustained through 3‐DCE designing. The paper also highlights the necessity of incorporating intangible value propositions of culture, leadership and governance, knowledge, image and relationship into the 3‐DCE model to generate an “extended 3‐DCE” framework for mediating operational performance and hence organizational success. Such a model required in a dynamic environment is argued to show a fit to represent a design for resilience perspective, requiring further research.
Research limitations/implications
First, the selection of sample size of organizations was small and arguments regarding its representation of the Swedish TCF firms' population could be raised. So the claims and propositions of the paper cannot be widely generalized. Second, the responses to the survey were based on judgments of the company top management and could vary if intra‐organizational responses were considered.
Practical implications
The findings from the paper can be beneficial for organizations to understand the key areas in which to invest and how to invest their resources and time, as CSF identification is largely qualitative and can result in differing opinions in pinpointing them. It is thus recommended to synthesize or identify them from the 3‐DCE perspective.
Originality/value
The paper is original in realizing how 3‐DCE can be instrumental in devising CSFs in organizations and also what factors needs to be incorporated into its “extended” framework to match the requirements for organizations in a dynamic environment.
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Jalal Javadi Moghaddam, Davood Momeni and Ghasem Zarei
This research presents a design method for designing greenhouse structures based on topology optimization. Moreover, the structural design of a gothic greenhouse is proposed in…
Abstract
Purpose
This research presents a design method for designing greenhouse structures based on topology optimization. Moreover, the structural design of a gothic greenhouse is proposed in which its structural strength has been improved by using this proposed method. In this method, the design of the structure is done mathematically; therefore, in the design process, more attention can be focused on the constraint space and boundary conditions. It was also shown how the static reliability and fatigue coefficients will change as a result of the design of the greenhouse structure with this method. Another purpose of this study is to find the weakest part of the greenhouse structure against lateral winds and other general loads on the greenhouse structure.
Design/methodology/approach
In the proposed method, the outer surface and the allowable volume as a constraint domain were considered. The desired loads can be located on the constraint domain. The topology optimization was used to minimize the mass and structural compliance as the objective function. The obtained volume was modified for simplifying the construction. The changes in the shape of the greenhouse structure were investigated by choosing three different penalty numbers for the topology optimization algorithm. The final design of the proposed structure was performed based on the total simultaneous critical loads on the structure. The results of the proposed method were compared in the order of different volume fractions. This showed that the volume fraction approach can significantly reduce the weight of the structure while maintaining its strength and stability.
Findings
Topology optimization results showed different strut and chords composition because of the changes in maximum mass limit and volume fraction. The results showed that the fatigue was more hazardous, and it decreased the strength of structure nearly three times more than a static analysis. Further, it was noticed that how the penalty numbers can affect topology optimization results. An optimal design based on topology optimization results was presented to improve the proposed greenhouse design against destruction and demolition. Furthermore, this study shows the most sensitive part of the greenhouse against the standard loads of wind, snow, and crop.
Originality/value
The obtained designs were compared with a conventional arch greenhouse, and then the structural performances were shown based on standard loads. The results showed that in designing the proposed structure, the optimized changes increased the structure strength against the standard loads compared to a simple arch greenhouse. Moreover, the stress safety factor and fatigue safety factor because of different designs of this structure were also compared with each other.
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Rong Wang, Jianzhong Shang, Xin Li, Zhuo Wang and Zirong Luo
This paper aims to present a new topology method in designing the lightweight and complex structures for 3D printing.
Abstract
Purpose
This paper aims to present a new topology method in designing the lightweight and complex structures for 3D printing.
Design/methodology/approach
Computer-aided design (CAD) and topology design are the two main approaches for 3D truss lattices designing in 3D printing. Though these two ways have their own advantages and have been used by the researchers in different engineering situations, these two methods seem to be incompatible. A novel topology method is presented in this paper which can combine the merits of both CAD and topology design. It is generally based on adding materials to insufficient parts in a given structure so the resulting topology evolves toward an optimum.
Findings
By using the topology method, an optimized-Kagome structure is designed and both 3D original-Kagome structure and 3D optimized-Kagome structure are manufactured by fused deposition modeling (FDM) 3D printer with ABS and the compression tests results show that the 3D optimized-Kagome has a higher specific stiffness and strength than the original one.
Originality/value
The presented topology method is the first work that using the original structure-based topology algorithm other than a boundary condition-based topology algorithm for 3D printing lattice and it can be considered as general way to optimize a commonly used light-weight lattice structure in strength and stiffness.
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Khader Zelani Shaik, P. Siddaiah and K. Satya Prasad
Planar periodic metallic arrays behave as artificial magnetic conductor (AMC) surfaces when placed on a grounded dielectric substrate, and they introduce a zero-degree reflection…
Abstract
Purpose
Planar periodic metallic arrays behave as artificial magnetic conductor (AMC) surfaces when placed on a grounded dielectric substrate, and they introduce a zero-degree reflection phase shift to incident waves. The antenna designers have new challenges while designing the AMC structure. The steps followed in designing the structure are as follows: 1) Designing the antenna, aimed to operate at millimetric wave frequencies, (2) Designing the AMC at desired frequencies, (3) Integrating the antenna design and AMC to resonate at millimetric wave frequencies and (4) Validate the output parameters of the antenna to be suitable for Internet of Things (IoT) applications.
Design/methodology/approach
The antenna is integrated with artificial material known as high impedance surface (HIS) for performance enhancement. A miniaturized, multiband, enhanced gain, AMC-integrated CPW-fed antenna is proposed and aimed to operate at millimetric wave frequencies, which is most suitable for IoT applications. The developed antenna operates at an extremely high range (30–300 GHz), i.e. from 40 to 60 GHz with the return loss values at lesser than −20 dB, and gain is greater than 10. The antenna is developed and simulated by using HFSS software.
Findings
An extensive research study has been carried out to develop a low profile, high gain and optimized antenna. The first two steps are separately designing the antenna and the AMC unit cell at the desired frequencies. The third step is finding the antenna or AMC radiating parts responsible for each resonant frequency by analysing the surface current distribution. CPW fed along with AMC integration has made the antenna feasible to achieve the extremely high frequency (EHF) range, i.e. 40–60 GHz, which is highly adoptable in IoT applications.
Originality/value
The result represented that the developed antenna is resonating at EHF rank with high gain and good imped matching when it is being compared with the previous models and has only CPW fed without having AMC structure integration. It is evident that the antenna which has only CPW fed has resonated at lower frequency than EHF range and justified output characteristics. But when it is embedded with the AMC structure, it resonates at the EHF range, which makes the antenna highly suitable for IoT applications, with more accuracy and high data rate possibility.
Dong Liu, Minghao Wang and Ming Cong
The purpose of this paper is to solve the common problems of outer phenomenon and stress concentration among pneumatic networks soft actuators.
Abstract
Purpose
The purpose of this paper is to solve the common problems of outer phenomenon and stress concentration among pneumatic networks soft actuators.
Design/methodology/approach
On the basis of imitating the caterpillar structure, the new soft actuator adopts the integral circular ladder structure instead of the traditional independent distributed structure as the air chamber. Through the comparison of several different structures, the parabolic in-wall curve is found to be fit for designing the optimal integrated chamber structure of the soft actuator. The curve function of each ladder chamber is computed based on the torque distribution model, aiming to decrease the terminal deformation. Meanwhile, the FEM analysis method is applied to establish the motion model of the integrated parabolic ladder soft actuator. The model’s accuracy, as well as structure’s deformation and stress, are verified.
Findings
Compared with the FEM data, the experimental data indicate that the new soft actuator has no obvious outer phenomenon, the maximum stress decreases and the stiffness increases. The new actuator is applied for designing a flexible gripper to grasp objects of different shapes and sizes. The gripper can grasp objects of 52.6 times its own mass.
Practical implications
The designed gripper is available for flexible production in various fields, such as capturing fruits of different sizes, soft foods or parts with complex shapes.
Originality/value
This paper proposes a new type soft actuator, which provides a solution for exploring the field of the soft robot. The problems of outer phenomenon and stress concentration are suppressed with pneumatic networks soft actuators.
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Louisi Francis Moura, Edson Pinheiro de Lima, Fernando Deschamps, Dror Etzion and Sergio E. Gouvea da Costa
This conceptual paper presents a proposal for improving a performance measurement (PM) system implementation process based on enterprise engineering (EE) guidelines, which gives…
Abstract
Purpose
This conceptual paper presents a proposal for improving a performance measurement (PM) system implementation process based on enterprise engineering (EE) guidelines, which gives the process a sense of completeness.
Design/methodology/approach
This paper analyzes a well-known process for PM systems implementation organized in two phases: identifying, designing and implementing the top-level performance measures; and cascading the top-level measures and identify appropriate lower-level performance measures. The proposed improvements to the studied process derive from the EE guidelines, which establish a basis for the structure of an organizational management system, the formalization and synchronization of processes, performance expectations, exception handling and change management.
Findings
The study reveals that not all EE guidelines are covered by the analyzed process, with four of them having no evidence of being adopted: involvement of people in process design and implementation; ensuring interoperability between different systems in the information structure; addressing of all possible exceptions; coherence and consistency of semantics across all processes.
Originality/value
By the lens of EE guidelines, this paper advances a how-to-guide. This paper can support managers and researchers on PM system design and implementation, given the importance and relevance of EE recommendations having a consistent and well-structured procedure.
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Jan Achterbergh and Dirk Vriens
The purpose of this paper is to show how the viable system model (VSM) and de Sitter's design theory can complement each other in the context of the diagnosis and design of viable…
Abstract
Purpose
The purpose of this paper is to show how the viable system model (VSM) and de Sitter's design theory can complement each other in the context of the diagnosis and design of viable organizations.
Design/methodology/approach
Key concepts from Beer's model and de Sitter's design theory are introduced and analyzed in order to show how they relate.
Findings
The VSM provides insight into the related systems necessary and sufficient for viability. As such, it specifies criteria supporting the diagnosis and design of organizational infrastructures, i.e. of organizational structures, HR systems, and technology. However, it does not explicitly conceptualize and provide a detailed heuristic for the design of organizational structures. De Sitter's theory fills in this gap.
Originality/value
The paper illustrates how, based on a rudimentary model of organizational viability, de Sitter's design theory positively addresses the question of how to diagnose and design organizational structures that add to the viability of organizations.
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Dirk Vriens and Jan Achterbergh
The purpose of this paper is to use de Sitter's design theory to show how organizational structures can be designed so as to attenuate organizational disturbances and amplify…
Abstract
Purpose
The purpose of this paper is to use de Sitter's design theory to show how organizational structures can be designed so as to attenuate organizational disturbances and amplify regulatory potential. It is argued that organizational structures with low values on so‐called design‐parameters are themselves no source of disturbances and have the required built‐in regulatory potential.
Design/methodology/approach
Key concepts from de Sitter's design theory are introduced and used to show how structures can attenuate disturbances and amplify regulatory potential.
Findings
The analysis in this paper deepens our understanding of the role of organizational structures for dealing with organizational complexity, and of the design parameters that should be manipulated to achieve structural attenuation and amplification.
Practical implications
Having a structure permitting organizations to attenuate and amplify is a crucial condition for organizational viability. This paper provides guidelines for the design of such structures.
Originality/value
This is one of a limited number of studies that makes apparent how general insights from (management) cybernetic (e.g. viability, attenuation and amplification) may be realized in organizations by their structural design.
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