scholarly journals Modelling and simulation of wool steaming for the efficient management of decatizing processes

2019 ◽  
Vol 128 ◽  
pp. 09010
Author(s):  
Fabiana Federica Ferro ◽  
Mirco Rampazzo ◽  
Alessandro Beghi
Keyword(s):  
Dimensional Stability ◽  
Synthetic Data ◽  
Process Efficiency ◽  
Empirical Knowledge ◽  
Simulation Environment ◽  
Textile Production ◽  
Physical Knowledge ◽  
Fabric Hand ◽  
Efficient Management ◽  
Finishing Processes

Finishing is one of the fundamental steps of textile production and still, nowadays it largely depends on empirical knowledge. Aim of finishing processes is to impart the required functional properties to the fabric and, in particular, decatizing is the process that lends the fabrics dimensional stability, enhances the luster and improves the so-called ‘fabric hand’, corresponding to the sense of touching a textile. In this paper, we consider wool fabrics and, by exploiting the available process physical knowledge, we derive a model that can predict certain fabric characteristics, such as its temperature and moisture content, correlated with the fabric dimensional stability. We also design a simulation environment according to the model and we use it to easily generate synthetic data, obtaining information about the steaming process under different conditions. By analyzing the data, we can obtain knowledge about how to maximize the fabric decatizing process efficiency.

Research on the seam performance of waterproof clothing based on continuous ultrasonic welding technology

2016 ◽  
Vol 28 (2) ◽  
Author(s):  
Hui Shi ◽  
Jianping Wang ◽  
Xiaona Chen ◽  
Shunhua Luo ◽  
Lingxi Zhang
Keyword(s):  
Hydrostatic Pressure ◽  
Production Technology ◽  
Dimensional Stability ◽  
Design Methodology ◽  
Setting Time ◽  
Ultrasonic Welding ◽  
Process Efficiency ◽  
Welding Parameters ◽  
Adhesive Tape ◽  
Practical Implications

Purpose An improved waterproof seam production technology (ultrasonic welding-thermo adhesive tape sealing (USW-TATS)) was developed in this study. The technology will improve the waterproof performance of seam which has problem resulted from needle holes and thread like seam leaking and excess shrinkage. Design/methodology/approach Threadless seams were produced by ultrasonic welding (USW) with coated and lamination fabric to replace the traditional sewing process in Sewing-thermo adhesive tape sealing (S-TATS). The process efficiency was evaluated by Methods-Time Measurement (MTM). Seam performance including hydrostatic pressure, shrinkage and tear force was compared among three technologies (USW, USW-TATS and S-TATS). The effect of ultrasonic welding parameters (amplitude, roller pressure and roller speed) on the USW-TATS seam performance was investigated.SEM analysis was carried out to examine the condition and morphology of the joints cross section. Findings It was found that waterproof performance and dimensional stability of USW-TATS seam were superior to that of S-TATS seam. Tear force and hydrostatic pressure increased firstly and then decreased with the increasing of USW parameters in UAW-TATS process. Binary regression relationships were found between the USW parameters and tear force or hydrostatic pressure. Shrinkage decreased with the increasing of roller pressure and speed. Practical implications Research results can be applied to predict seam performance of waterproof clothing, reduce equipment parameters setting time and enhance product quality in industry. Originality/value A threadless production technology (USW-TATS) was proposed to improve waterproof performance and dimensional stability of outdoor clothing seams.

scholarly journals Advanced Purification of Industrial and Mixed Wastewater by Combined Membrance Filtration and Sonochemical Technologies

2017 ◽  
pp. 948-959
Author(s):  
Enrico Fatarella ◽  
Irene Cioni ◽  
Cecilia Caretti ◽  
Enrico Venturini degli Esposti ◽  
Ester Coppini
Keyword(s):  
Municipal Wastewater ◽  
Critical Role ◽  
Treatment Plant ◽  
Textile Wastewater ◽  
Chemical Oxidation ◽  
Municipal Wastewater Treatment ◽  
Textile Production ◽  
Combined Process ◽  
Pre Treatment ◽  
Finishing Processes

The textile sector plays a critical role in this context, because textile companies are large users of water - typically 0.2-0.5 m3 are needed to produce 1 kg of finished product [1] – and they are historically concentrated in districts (e.g. Prato in Italy) located in Southern Member States, such as Italy, Spain and Portugal, which are facing more and more longer periods of drought and therefore are strongly in the need to preserve the availability of water for potable use. The finishing processes (i.e. pre-treatment, dyeing, printing and special finishing) are especially polluting and resource consuming in terms of water, energy and chemicals. Almost the entire of water used in textile production is discharged and, on average, the effluents volume covers 90-95% of the water used [2]. According to that, a new Ultrafiltration/Sonichemical combined process has been investigated on textile wastewater by evaluating the reduction of the pollution load induced by physical separation and by chemical oxidation promoted by Ultrasound cavitation. The experimental campaign carried out at the Municipal Wastewater treatment Plant in Prato showed that the quality of the treated water reaches the target reported in literature [3] for textile manufacturing sectors. An estimation of the costs of the purified water has been assessed and the combined process seems to be promising for further development. The authors would like to thank the European Commission to funding this project (contract number LIFE07/IT/000439) within the LIFE+ Environmental Policy and Governance 2007 Programme.

scholarly journals A Multiagent-Based Approach to the Grid-Scheduling Problem

2012 ◽  
Vol 15 (2) ◽  
Author(s):  
Mauricio Solar ◽  
Jorge Rojas ◽  
Marcelo Mendoza ◽  
Raúl Monge ◽  
Víctor Parada
Keyword(s):  
Intelligent Agents ◽  
Scheduling Problem ◽  
Simulation Environment ◽  
Grid Scheduling ◽  
Global Scheduling ◽  
Efficient Management ◽  
Grid Simulation ◽  
Geographically Distributed ◽  
Numerical Performance ◽  
Grid Resources

Computer grids are systems containing heterogeneous, autonomous and geographically distributed nodes. The proper functioning of a grid depends mainly on the efficient management of grid resources to carry out the various jobs that users send to the grid. This paper proposes an algorithm that uses intelligent agents in each node to perform global scheduling in a collaborative and coordinated way. The algorithm was implemented in a grid simulation environment that allows the incorporation of intelligent agents. This simulation environment was designed and developed to run and analyze the behavior of the proposed algorithm, which outperforms the numerical performance of two well-known algorithms in terms of balancing the load and making use of the grid's capacity without giving preference to any node.

Santos: A physics-based digital human simulation environment

2006 ◽  
Author(s):  
Karim Abdel-Malek ◽  
Jasbir Arora ◽  
Jingzhou Yang ◽  
Timothy Marler ◽  
Steve Beck ◽  
...  
Keyword(s):  
Simulation Environment ◽  
Digital Human ◽  
Human Simulation

Social Logics in Reproduction Health

2018 ◽  
Vol 3 (6) ◽  
Keyword(s):  
Health Care ◽  
Child Health ◽  
Reproductive Health ◽  
Health Sector ◽  
Cultural Representations ◽  
Reproductive Health Care ◽  
Social Actors ◽  
Efficient Management ◽  
Social Logic ◽  
And Child Health

The issue that underlies a worrying question of maternal and child health in Côte d'Ivoire is that of social logic. Social logic is perceived as "cultural constructions of actors with regard to morbidity that cause to adopt reproductive health care". Based on this understanding, the concept of social logic in reproductive health is similar to a paradigm that highlights the various factors that structure and organise sociological resistance to mothers' openness to healthy reproductive behaviours; that is, openness to change for sustainable reproductive health. Far from becoming and remaining a prisoner of blind culturalism with the social logic that generates the health of mothers, new-borns and children, practically-relevant questions are raised. Issues of "bad governance", socio-cultural representations and behaviours in conflict with modern epidemiological standards are addressed in a culturally-sensitive manner, an important issue for the provision of care focused on the needs of mothers seeking answers to health problems. Developing these original community characteristics helps to orient a reading list in a socioanthropological perspective with a view to explaining and understanding different problems encountered, experiences acquired by social actors during the implementation of antenatal, postnatal and family planning care. This context of building logic with regard to reproductive health care is key to identifying real bottlenecks in maternity services and achieving efficient management of maternal, new-born and child health care for the benefit of populations and actors in the public health sector.

Performance Analysis on Eco-friendly Machining of Ti6Al4V using Powder Mixed with Different Dielectrics in WEDM

2020 ◽  
Vol 17 (3) ◽  
pp. 8128-8139
Author(s):  
S. Chakraborty ◽  
S. Mitra ◽  
D. Bose
Keyword(s):  
Metal Removal ◽  
Removal Rate ◽  
Machining Process ◽  
Process Efficiency ◽  
Machining Parameters ◽  
Dielectric Fluids ◽  
High Emission ◽  
Pulse On Time ◽  
Pulse Off Time ◽  
Wedm Process

The recent scenario of modern manufacturing is tremendously improved in the sense of precision machining and abstaining from environmental pollution and hazard issues. In the present work, Ti6Al4V is machined through wire EDM (WEDM) process with powder mixed dielectric and analyzed the influence of input parameters and inherent hazard issues. WEDM has different parameters such as peak current, pulse on time, pulse off time, gap voltage, wire speed, wire tension and so on, as well as dielectrics with powder mixed. These are playing an essential role in WEDM performances to improve the process efficiency by developing the surface texture, microhardness, and metal removal rate. Even though the parameter’s influencing, the study of environmental effect in the WEDM process is very essential during the machining process due to the high emission of toxic vapour by the high discharge energy. In the present study, three different dielectric fluids were used, including deionised water, kerosene, and surfactant added deionised water and analysed the data by taking one factor at a time (OFAT) approach. From this study, it is established that dielectric types and powder significantly improve performances with proper set of machining parameters and find out the risk factor associated with the PMWEDM process.

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