Arduino Controlled Filling Yarn Presenter of Modern Rapier Loom

This paper is concerned with the application of filling yarn presenter with the help of Arduino mega controlled by various analog and digital inputs. Modern Rapier looms are more advanced in every aspect of production than conventional power looms. Quickstep mechanism is used in multicolored weft insertion. In the current project we introduce a prototype of servo-motor-controlled filling yarn presenter as well as a hypothesis has been shown in order to maximizing the number of filling yarn presenter. We took advantage of Arduino-based programmable circuit board (PCB) along with necessary components such as keypads, potentiometers, breadboards, servo motors, LCD, metal wires and plastic pipes. The integration of all these parts results in a prototype based on this redefined mechanism which is able to manually control 4 individual colored weft yarns according to their sequence that also can be inputted manually

Development of a device for the positioning of a projectile in high speed magnetic weft insertion for weaving machines

Short version: The magnetic weft insertion for weaving machines is being developed to combine the advantages of common methods of weft insertions such as rapier, projectile and air-jet weaving. The novel method of weft insertion is currently being tested by the use of a demonstrator at ITA. To fulfil a yarn transport at target insertion speeds of up to 1000 insertions per minute central challenges have to be overcome. The safe positioning of the magnetic projectile for preparation of the weft insertion is one central challenge. Objective of this thesis: In present work a device for the safe positioning of the magnetic projectile is being developed. This device shall be able to avoid a loss of the magnetic projectile due to centrifugal forces in rotational areas of the moving path. Additionally the device shall be able to position the projectile correctly and smoothly for the initiation of next weft insertion at the target insertion speeds. Solution process: According to VDI 2221 a mechanical design process is being carried out. After a clarification of the task, requirements are identified. The investigation of the current set-up of the demonstrator is used to support the definition of requirements. Sub-sequently the investigation of necessary functions and their structure follows. This functional structure is then used to develop principle solutions and basic concepts to fulfil respective sub-functions. By evaluating the fulfilment of requirements of the developed concepts a selection of a combination of principal concepts is carried out. Thus a general concept is being described in preliminary layouts. Key results: Key results are a list of requirements for the developed device and a description of the respective functional structure. Additionally basic concepts are developed for the fulfilment of these functions. With regard to the fulfilment of requirements a combination of principal concepts is selected for the creation of preliminary layouts. These preliminary layouts are a basis for further creation of definitive layouts and the manufacturing of functional models

Holistic Security and Safety for Factories of the Future

The accelerating transition of traditional industrial processes towards fully automated and intelligent manufacturing is being witnessed in almost all segments. This major adoption of enhanced technology and digitization processes has been originally embraced by the Factories of the Future and Industry 4.0 initiatives. The overall aim is to create smarter, more sustainable, and more resilient future-oriented factories. Unsurprisingly, introducing new production paradigms based on technologies such as machine learning (ML), the Internet of Things (IoT), and robotics does not come at no cost as each newly incorporated technique poses various safety and security challenges. Similarly, the integration required between these techniques to establish a unified and fully interconnected environment contributes to additional threats and risks in the Factories of the Future. Accumulating and analyzing seemingly unrelated activities, occurring simultaneously in different parts of the factory, is essential to establish cyber situational awareness of the investigated environment. Our work contributes to these efforts, in essence by envisioning and implementing the SMS-DT, an integrated platform to simulate and monitor industrial conditions in a digital twin-based architecture. SMS-DT is represented in a three-tier architecture comprising the involved data and control flows: edge, platform, and enterprise tiers. The goal of our platform is to capture, analyze, and correlate a wide range of events being tracked by sensors and systems in various domains of the factory. For this aim, multiple components have been developed on the basis of artificial intelligence to simulate dominant aspects in industries, including network analysis, energy optimization, and worker behavior. A data lake was also used to store collected information, and a set of intelligent services was delivered on the basis of innovative analysis and learning approaches. Finally, the platform was tested in a textile industry environment and integrated with its ERP system. Two misuse cases were simulated to track the factory machines, systems, and people and to assess the role of SMS-DT correlation mechanisms in preventing intentional and unintentional actions. The results of these misuse case simulations showed how the SMS-DT platform can intervene in two domains in the first scenario and three in the second one, resulting in correlating the alerts and reporting them to security operators in the multi-domain intelligent correlation dashboard.The present work has been developed under the EUREKA ITEA3 Project Cyber-Factory#1 (ITEA-17032) and Project CyberFactory#1PT (ANI—P2020 40124) co-funded by Portugal 2020. Furthermore, this work also received funding from the project UIDB/00760/2020.info:eu-repo/semantics/publishedVersio

Sweat permeable and ultrahigh strength 3D PVDF piezoelectric nanoyarn fabric strain sensor

Commercial wearable piezoelectric sensors possess excellent anti-interference stability due to their electronic packaging. However, this packaging renders them barely breathable and compromises human comfort. To address this issue, we develop a PVDF piezoelectric nanoyarns with an ultrahigh strength of 313.3 MPa, weaving them with different yarns to form three-dimensional piezoelectric fabric (3DPF) sensor using the advanced 3D textile technology. The tensile strength (46.0 MPa) of 3DPF exhibits the highest among the reported flexible piezoelectric sensors. The 3DPF features anti-gravity unidirectional liquid transport that allows sweat to move from the inner layer near to the skin to the outer layer in 4 s, resulting in a comfortable and dry environment for the user. It should be noted that sweating does not weaken the piezoelectric properties of 3DPF, but rather enhances. Additionally, the durability and comfortability of 3DPF are similar to those of the commercial cotton T-shirts. This work provides a strategy for developing comfortable flexible wearable electronic devices

Quantification of factors influencing productivity using AHP: An approach towards productivity improvement.

Improvement in productivity level plays a major role in the organisation success and securing the objectives of the organisation. The aim of this paper is to quantify the factors influencing productivity of power loom industry and suggest suitable improvement techniques for the same. By reviewing the literature based on factors affecting productivity and productivity improvement, factors from different scholars were listed. Later experts were asked to identify and group the factors related to power loom industry. By utilizing the acquired factors from the experts a questionnaire was formed which was used as an input for AHP process. Based on the results of AHP process in the form of weights of different factors, the most important factors were identified and prioritized using the ranking method. The important factors were the human resource factor which influenced 55% to productivity followed by process factor 20%. The lean philosophy is best suited in order to control these factors and improve productivity [9] and [30].Hence suitable techniques from the lean philosophy which can be applied to power loom industry are identified. The application of these techniques can assure improvement in the productivity of power loom industry. Keywords: Power loom, productivity, critical success factors, AHP

DTI Economics Paper No. 2: A comparative study of the British and Italian Textile and Clothing Industries.

Commissioned by: Association of Suppliers to the British Clothing Industry Conference, Hucknell, Nottingham, February 2004 During the 1990s the Italian clothing and textiles industry grew while the British, French and German textile and clothing industries declined by 40%. In 2001 the Italian textiles & clothing sector was three times larger than the British, accounting for 11.7% of Italian manufacturing output but only 3.3% in Britain. In 2000 Italian fabric exports were 15 times that of the UK. The study was conducted in response to a recommendation by the Textiles and Clothing Strategy Group (TCSG), comprising UK industry, trade unions, Higher Education and the DTI. The purpose of the study was to account for these differences, assess relative merits against value for money and identify best practice in the Italian industry. The methodology comprised comparative analysis and case studies of British and Italian textile mills and tailoring manufacturers, based on my initial recommendations. We visited 5 textile mills in Yorkshire and 15 in Italy plus 3 factories in each country. I conducted a detailed comparative technical analysis of the construction of suit jackets against 13 devised criteria, a number of interviews,compared technologies, equipment and manufacturing methods across all factories, against 8 criteria, drawing on my specialist knowledge and experience as a menswear clothing technologist. The technical reports I compiled formed a section of the final report. Findings were presented to the Clothing Strategy Group and published by the DTI as their Economic Paper No 2 . I made further presentations to industry and academic groups including ASBCI, FCDE, The Textile Society, Savile Row Tailors Association, and LSE. Other outcomes were a publication in the Journal of the Textile Society Text, an article in Selvedge magazine and contributions to the Encyclopaedia of Clothing by Thomson Gale. As a result of this research further consultancy projects have been conducted with the Industry Forum and ASBCI

Proceedings of the Advisory Committee on Standardization of Carbon-Phenolic Test Methods and Specifications

Proceedings of the Advisory Committee on Standardization of carbon-phenolic test methods and specifications are compiled. The following subject areas are covered: ashing procedures and alkali metal content of carbon fiber and fabrics; SPIP product identification code; SPIP initiative to adopt a water-soluble rayon yarn lubricant/size for weaving; fabric oxidation mass loss test; shelf life limit for prepregs, industry standard; silicon contamination update; resin, filler, and fabric content in prepreg; carbon assay testing calibration; thiokol rayon specifications; and SPIP low conductivity PAN program

Woven Textile Design

This chapter considers woven fabrics, their formation, properties and applications. It explains the principles of weaving, details the basic constructions, and common weaving terminology in use. Design approaches to woven fabric design are detailed, along with the role that technology plays to create and communicate ideas. Advances in woven fabric construction, design and weaves relationship to other processes are other key topics covered. Key Words Weave design and manufacture; sustainability and weave as a traditional craft; computer aided design and the global textile market; fabric performance and advances in woven technology