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Publications (10 of 15) Show all publications
Agrawal, T. K., Sharma, A. & Kumar, V. (2018). Blockchain-Based Secured Traceability System for Textile and Clothing Supply Chain. In: Sébastien Thomassey, Xianyi Zeng (Ed.), Artificial Intelligence for Fashion Industry in the Big Data Era: (pp. 197-208). Singapore: Springer Publishing Company
Open this publication in new window or tab >>Blockchain-Based Secured Traceability System for Textile and Clothing Supply Chain
2018 (English)In: Artificial Intelligence for Fashion Industry in the Big Data Era / [ed] Sébastien Thomassey, Xianyi Zeng, Singapore: Springer Publishing Company, 2018, p. 197-208Chapter in book (Refereed)
Abstract [en]

Blockchain has emerged as a prominent and reliable solution that can enable and ensure secure information sharing over wide area networks. In an era of digitalisation, blockchain technology is finding wide applications in multiple fields including implementing traceability in the supply chain. In this direction, this chapter explores its potential application in implementing a blockchain-based traceability system for textile and clothing (T&C) supply chain. It examines the necessity and concept of a traceability system, followed by enlisting advantages of blockchain technology for implementing traceability. Further, a case-based example has been used to explain blockchain application in implementing traceability in T&C supply chain. Finally, it mentions the challenges and limitations of such blockchain-based traceability system that can be addressed through further research.

Place, publisher, year, edition, pages
Singapore: Springer Publishing Company, 2018
Series
Springer Series in Fashion Business, ISSN 2366-8776, E-ISSN 2366-8784 ; 15202
Keywords
Blockchain, Traceability, Supply Chain, Textile and clothing
National Category
Business Administration
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-15067 (URN)10.1007/978-981-13-0080-6 (DOI)978-981-13-0079-0 (ISBN)978-981-13-0080-6 (ISBN)
Projects
SMDTex (Sustainable Management and Design in Textiles)
Available from: 2018-09-06 Created: 2018-09-06 Last updated: 2018-09-06Bibliographically approved
Kumar, V., Rao, P. K. & Rawal, A. (2017). Amplification of electrolyte uptake in the absorptive glass mat (AGM)separator for valve regulated lead acid (VRLA) batteries. Journal of Power Sources, 341, 19-26
Open this publication in new window or tab >>Amplification of electrolyte uptake in the absorptive glass mat (AGM)separator for valve regulated lead acid (VRLA) batteries
2017 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 341, p. 19-26Article in journal (Refereed) Published
Abstract [en]

Absorptive glass mat (AGM) separators are widely used for valve regulated lead acid (VRLA) batteries due to their remarkable fiber and structural characteristics. Discharge performance and recharge effectiveness of VRLA batteries essentially rely on the distribution and saturation levels of the electrolyte within the AGM separator. Herein, we report an analytical model for predicting the wicking characteristics of AGM battery separators under unconfined and confined states. The model of wicking behavior of AGM is based upon Fries and Dreyer's approach that included the effect of gravity component which was neglected in classic Lucas-Washburn's model. In addition, the predictive model of wicking accounted for realistic structural characteristics of AGM via orientation averaging approach. For wicking under confined state, the structural parameters have been updated under defined level of compressive stresses based upon the constitutive equation derived for a planar network of fibers in AGM under transverse loading conditions. A comparison has been made between the theoretical models and experimental results of wicking behavior under unconfined and confined states. Most importantly, the presented work has highlighted the questionable validity of classic Lucas-Washburn model for predicting the wicking characteristics of AGM separator over longer time duration.

Keywords
Fiber orientation, Compression, Separator, Wicking
National Category
Materials Engineering
Identifiers
urn:nbn:se:hb:diva-11376 (URN)10.1016/j.jpowsour.2016.11.027 (DOI)000393003400003 ()2-s2.0-84999287077 (Scopus ID)
Available from: 2016-12-13 Created: 2016-12-13 Last updated: 2018-11-28Bibliographically approved
Kumar, V., Koehl, L., Zeng, X. Z. & Ekwall, D. (2017). Coded yarn based tag for tracking textile supply chain. Journal of manufacturing systems, 42, 124-139
Open this publication in new window or tab >>Coded yarn based tag for tracking textile supply chain
2017 (English)In: Journal of manufacturing systems, ISSN 0278-6125, E-ISSN 1878-6642, Vol. 42, p. 124-139Article in journal (Refereed) Published
Abstract [en]

Traceability has gained considerable attention to facilitate monitored production, product recall, safety and reverse supply chain activities, in recent years. Traceability in manufacturing and distribution involves the use of tracking tags which are attached to the products; consequently, the products are tracked by recording the identity of attached tracking tags in the supply chain. In this context, this paper introduces a new yarn coding-based tracking tag which is fully integrated into textile for tracking the textile supply chain. The new tracking tag involves the use of special yarns which act as information carrier and basic unit of the tracking tag. An implementation scenario is discussed to use the designed tracking tag to monitor the production and authentication purposes. Real prototypes of the fully integrated coded yarn based textile tags are demonstrated in woven and knitted structures and analysed under the effect of washing treatments to simulate realistic conditions. Further, an image pattern recognition based algorithm has been introduced and analysed to extract the information encoded in the tag using coded yarns.

Keywords
Tracking tag, Yarn tag, Traceability, Yarn coding, Image pattern recognition
National Category
Materials Engineering
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-11534 (URN)10.1016/j.jmsy.2016.11.008 (DOI)000394077400010 ()
Available from: 2016-12-29 Created: 2016-12-29 Last updated: 2018-11-29Bibliographically approved
Rao, P. V., Rawal, A., Kumar, V. & Rajput, K. G. (2017). Compression-recovery model of absorptive glass mat (AGM) separator guided by X-ray micro-computed tomography analysis. Journal of Power Sources, 365, 389-398
Open this publication in new window or tab >>Compression-recovery model of absorptive glass mat (AGM) separator guided by X-ray micro-computed tomography analysis
2017 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 365, p. 389-398Article in journal (Refereed) Published
Abstract [en]

Absorptive glass mat (AGM) separators play a key role in enhancing the cycle life of the valve regulated lead acid (VRLA) batteries by maintaining the elastic characteristics under a defined level of compression force with the plates of the electrodes. Inevitably, there are inherent challenges to maintain the required level of compression characteristics of AGM separators during the charge and discharge of the battery. Herein, we report a three-dimensional (3D) analytical model for predicting the compression-recovery behavior of AGM separators by formulating a direct relationship with the constituent fiber and structural parameters. The analytical model of compression-recovery behavior of AGM separators has successfully included the fiber slippage criterion and internal friction losses. The presented work uses, for the first time, 3D data of fiber orientation from X-ray micro-computed tomography, for predicting the compression-recovery behavior of AGM separators. A comparison has been made between the theoretical and experimental results of compression-recovery behavior of AGM samples with defined fiber orientation characteristics. In general, the theory agreed reasonably well with the experimental results of AGM samples in both dry and wet states. Through theoretical modeling, fiber volume fraction was established as one of the key structural parameters that modulates the compression hysteresis of an AGM separator.

Place, publisher, year, edition, pages
Elsevier, 2017
Keywords
Compression, Recovery, Separator, X-ray micro-computed tomography
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-12705 (URN)10.1016/j.jpowsour.2017.08.055 (DOI)000412379200047 ()2-s2.0-85028966112 (Scopus ID)
Available from: 2017-09-21 Created: 2017-09-21 Last updated: 2018-11-29Bibliographically approved
Kumar, V., Agrawal, T. K., Wang, L. & Chen, Y. (2017). Contribution of traceability towards attaining sustainability in the textile sector. Textiles and Clothing Sustainability, 3(5)
Open this publication in new window or tab >>Contribution of traceability towards attaining sustainability in the textile sector
2017 (English)In: Textiles and Clothing Sustainability, ISSN 2197-9936, Vol. 3, no 5Article in journal (Refereed) Published
Abstract [en]

Sustainability is a widely recognized concern and priority for healthy growth of the society and for preservation of the planet. Concerning this, textile sector has seen an unprecedented demand for sustainable products from the consumers, responding to which organizations have undertaken different initiatives. One of the major concerns in the textile sector is its complex supply chain networks and the involvement of numerous actors dealing with diverse raw materials and operations. The effective implementation of sustainability at the industrial scale would require the participation of all supply chain actors, along with an efficient traceability system to monitor and analyze different sustainability aspects. Furthermore, traceability is an integral part of the recycling process which contributes towards the sustainability. Therefore, the present article focuses on the contribution of traceable information towards attaining the sustainability in the textile sector. The three pillars of sustainability, namely, ecological, societal, and economic, are discussed for their relation and dependency on the traceability followed by an overview of the challenges in successful implementation of the traceability system, which is anticipated to shape the future research questions.

National Category
Business Administration
Research subject
Textiles and Fashion (General); Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-12181 (URN)10.1186/s40689-017-0027-8 (DOI)
Available from: 2017-05-28 Created: 2017-05-28 Last updated: 2017-12-15Bibliographically approved
Rawal, A., Kumar, V., Saraswat, H., Weerasinghe, D., Hietel, D. & Dauner, M. (2017). Creating three-dimensional (3D) fiber networks with out-of-plane auxetic behavior over large deformations. Journal of Materials Science, 52(5), 2534-2548
Open this publication in new window or tab >>Creating three-dimensional (3D) fiber networks with out-of-plane auxetic behavior over large deformations
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2017 (English)In: Journal of Materials Science, ISSN 0022-2461, E-ISSN 1573-4803, Vol. 52, no 5, p. 2534-2548Article in journal (Refereed) Published
Abstract [en]

Fiber networks with out-of-plane auxetic behavior have been sporadically investigated. One of the major challenges is to design such materials with giant negative Poisson’s ratio over large deformations. Here in, we report a systematic investigation to create three-dimensional (3D) fiber networks in the form of needlepunched nonwoven materials with out-of-plane auxetic behavior over large deformations via theoretical modeling and extensive set of experiments. The experimental matrix has encapsulated the key parameters of the needlepunching nonwoven process. Under uniaxial tensile loading, the anisotropy coupled with local fiber densification in networks has yielded large negative Poisson’s ratio (up to −5.7) specifically in the preferential direction. The in-plane and out-of-plane Poisson’s ratios of fiber networks have been predicted and, subsequently, compared with the experimental results. Fiber orientation was found to be a core parameter that modulated the in-plane Poisson’s ratio of fiber networks. A parametric analysis has revealed the interplay between the anisotropy of the fiber network and the out-of-plane Poisson’s ratio based upon constant volume consideration.

National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:hb:diva-11536 (URN)10.1007/s10853-016-0547-7 (DOI)000389611000015 ()2-s2.0-84995520629 (Scopus ID)
Available from: 2016-12-29 Created: 2016-12-29 Last updated: 2018-11-29Bibliographically approved
Kumar, V., Hallqvist, C. & Ekwall, D. (2017). Developing a Framework for Traceability Implementation in the Textile Supply Chain. Systems, 5(2), Article ID 33.
Open this publication in new window or tab >>Developing a Framework for Traceability Implementation in the Textile Supply Chain
2017 (English)In: Systems, ISSN 2079-8954, Vol. 5, no 2, article id 33Article in journal (Refereed) Published
Abstract [en]

Traceability has recently gained considerable attention in the textile industry. Traceability stands for information sharing about a product including the product history, specification, or location. With the involvement of globally dispersed actors in the textile supply chain, ensuring appropriate product quality with timely supplies is crucial for surviving in this industry with ever increasing competition. Hence it is of paramount importance for a supply chain actor to track every product and trace its history in the supply chain. In this context, this paper presents a framework to implement traceability in the textile supply chain. A system approach has been followed, where firstly the usage requirement of traceability is defined, and then a framework for implementing intra-actor or internal traceability and inter-actor or external traceability is discussed. This article further presents a sequential diagram to demonstrate the interaction and information exchange between the actors in the supply chain, when the traceability information is requested. An example is also illustrated for data storage using a relational database management system and information exchange using XML for the textile weaver. Finally, the article discusses challenges and future studies required to implement traceability in the textile supply chain.

Keywords
supply chain traceability, traceability framework, textile, RDBMS, XML
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-12059 (URN)10.3390/systems5020033 (DOI)000404527800009 ()
Projects
SMDTex
Available from: 2017-04-06 Created: 2017-04-06 Last updated: 2018-11-29Bibliographically approved
Kumar, V. & Rawal, A. (2017). Elastic Moduli of Electrospun Mats: Importance of Fiber Curvature and Specimen Dimensions. Journal of The Mechanical Behavior of Biomedical Materials, 72, 6-13
Open this publication in new window or tab >>Elastic Moduli of Electrospun Mats: Importance of Fiber Curvature and Specimen Dimensions
2017 (English)In: Journal of The Mechanical Behavior of Biomedical Materials, ISSN 1751-6161, E-ISSN 1878-0180, Vol. 72, p. 6-13Article in journal (Refereed) In press
Abstract [en]

Success of tissue engineering relies on the architecture and properties of porous scaffolds. Electrospun nonwoven scaffolds in the form of mats are unique materials due to large surface area to volume ratio, high porosity, versatility in surface functionalities and excellent mechanical properties. Maneuvering the mechanical behavior ofthe electrospun mat is a major challenge both from theoretical and experimental perspectives. Herein, we report a two-dimensional (2D) analytical model of normalized elastic moduli of electrospun mats by formulating a relationship with the governing fiber and structural parameters. The analytical model of normalized mat modulush as also accounted for fiber curvature in the form of sinusoidal curve along with the specimen dimensions considered during the uniaxial tensile test. A comparison has been made between the magnitudes of normalized matmodulus obtained through predictive modeling and the experimental results adapted from the literature. In general, a good agreement has been found between the theoretical and experimental results of normalized moduli ofthe electrospun mats. An interplay of some of the governing parameters has been analyzed through parametric analysis. Through theoretical modeling, the normalized amplitude of fiber crimp via fiber diameter along withthe aspect ratio of specimen dimensions are observed to be the dominant factors responsible for modulating thenormalized mat modulus.

Keywords
fiber curvature, electrospun, specimen dimension, tissue
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-12106 (URN)10.1016/j.jmbbm.2017.04.013 (DOI)000403123600002 ()2-s2.0-85018504050 (Scopus ID)
Available from: 2017-04-18 Created: 2017-04-18 Last updated: 2018-11-29Bibliographically approved
Kumar, V. (2017). Exploring fully integrated textile tags and information systems for implementing traceability in textile supply chains. (Doctoral dissertation). Borås: Högskolan i Borås
Open this publication in new window or tab >>Exploring fully integrated textile tags and information systems for implementing traceability in textile supply chains
2017 (English)Doctoral thesis, monograph (Other academic)
Abstract [en]

Exploring fully integrated textile tags and information systems for implementing traceability in textile supply chains

Traceability, in general, refers to keeping track of information to a certain degree. The concept of traceability is considered important to verify the various aspects of products in different industries and their global supply chains. Textile industry is among those which are accused time‐to‐time for opaque supply chains and unsustainable practices. Particularly, the aftermath of a series of industrial catastrophes, customers and non‐government organizations have started to scrutinize the brands to bring transparency in their supply chains. In this direction, traceability has been identified as a tool for organizations to trace their supplies throughout the supply chains and collect relevant information to ensure transparency and claim validation. Traceability has been further acknowledged as a competitive element and often acts as a decisive factor in purchase process. Moreover, the textile products are one of the most counterfeit‐prone items around the world. As a result, the demand for traceability has been intensified for supply chain monitoring and security, and product authentication.

The principal aim of this thesis was to address the implementation of traceability information systems in the textile supply chain. Further, it investigates the feasibility of yarn‐based integrated tracking tags as a means to impart traceability in textiles. It has been pursued through several independent studies in the domain of textile manufacturing, supply chain management and information systems. The appended papers in this thesis address various aspects of traceability implementation in the textile supply chain and how traceability information can be encoded into the textiles using yarn‐based coding.

Traceability consists of two components namely information system and tagging. The latter component is used to uniquely identify the product in the supply chain which assists in recalling and/or storing the relevant traceability data from/in the information system. Different actors in the supply chain manage the traceability data in their information systems, therefore traceability tag acts as a linking agent for information exchange. In this direction, this thesis introduces the concept of yarn coding and yarn coding‐based integrated tags which can be potentially used in future for textile traceability applications. In addition, a framework is proposed for the implementation of traceability information system in the textile supply chain. The work highlights various elements which can play a significant role in promoting and/or implementing traceability. Regardless of perspective or viewpoint, traceability is interwoven between technical and managerial aspects; therefore traceability implementation requires a techno‐managementapproach to obtain an optimal solution.

Place, publisher, year, edition, pages
Borås: Högskolan i Borås, 2017
Series
Skrifter från Högskolan i Borås, ISSN 0280-381X ; 80
Keywords
Traceability, Textile, Yarn coding, Integrated tag, Supply chain management, Spårbarhet, Textil, Garn‐kodning, Integrerad märkning, Hantering av försörjningskedjor
National Category
Engineering and Technology
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-12151 (URN)978-91-88269-47-8 (ISBN)978-91-88269-48-5 (ISBN)
Projects
SMDTex
Available from: 2017-05-17 Created: 2017-05-11 Last updated: 2017-05-22Bibliographically approved
Rawal, A., Kumar, V., Hietel, D. & Dauner, M. (2017). Modulating the Poisson’s ratio of articular cartilage via collagen fibril alignment. Materials letters (General ed.), 194, 45-48
Open this publication in new window or tab >>Modulating the Poisson’s ratio of articular cartilage via collagen fibril alignment
2017 (English)In: Materials letters (General ed.), ISSN 0167-577X, E-ISSN 1873-4979, Vol. 194, p. 45-48Article in journal (Refereed) Published
Abstract [en]

Articular cartilage possesses unique structure and composition giving rise to unusual mechanical behavior. Typically, it is a structurally graded material that displays variation in mechanical properties along the depth. In this communication, the geometrical probability approach has been used for predicting the in-plane Poisson’s ratio in the surface and middle zones of articular cartilage. The presented model has formulated a relationship between the Poisson’s ratio and collagen fibril alignment. A comparison has been made between the theoretical and experimental findings of Poisson’s ratio in the surface and middle zones of human patella cartilage, as obtained from the literature.

Keywords
Biomaterials, Structural, Collagen, Poisson’s ratio
National Category
Other Materials Engineering
Identifiers
urn:nbn:se:hb:diva-12058 (URN)10.1016/j.matlet.2017.01.139 (DOI)000397353700013 ()2-s2.0-85012289430 (Scopus ID)
Available from: 2017-03-30 Created: 2017-03-30 Last updated: 2018-12-01Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-9955-6273

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