Gojko Nikolić

Investigating the positioning edge accuracy of sensors in textile and clothing manufacture

Purpose – This paper seeks to pursue the research of different types of sensors suitable for positioning edge accuracy of textile material.Design/methodology/approach – A measuring device is used to install different types of sensors on the slide holders and to change their interspace as well as the space between the sensors and textile fabric.Findings – The new measuring equipment has been established.Research limitations/implications – Only the results of woven fabric measurement are analyzed in this paper, while the results of knitted and nonwoven fabric measurement will be elaborated in the future papers.Originality/value – The measuring equipment is original.

Technical systems in intelligent clothing with active thermal protection

Purpose – This paper seeks to examine the practical construction of a patented intelligent article of clothing with active thermal protection, outer shell with a variable thickness, system of thermoinsulating chambers, sensors and measuring systems, microcontroller and control system, actuator system and power supply system based on hardware aspect.Design/methodology/approach – Based on practical construction and software aspect, a measuring and control program with algorithm of intelligent behavior is presented.Findings – An intelligent article of clothing with thermal protection like a complex technical system consisting of a very complex architecture connected by different bus types to constitute a complex system acting synchronously and effectively controlled by the microcontroller containing the program which is based on the algorithm of the intelligent behavior.Research limitations/implications – The technical systems described represent a suitable basis for experiments and scientific research durin...

Mechanical properties of sewing stitch performed in frozen state

The proposed solution for increased automation in clothing production by freezing the textile involves sewing operations in frozen state. The realistic applicability of such technology could be limited, amongst other issues, by the possible loss of mechanical properties of the sewing stitch performed in that way. This work represents an experimental investigation for the evaluation of the influence of textile freezing to possible changes of mechanical properties with respect to the normally performed sewing stitch. A series of standard extension tests are done on specimens of sewing stitches performed both in frozen state and in usual way for comparison. The differences in the results are analysed statistically for a representative textile material.

Intelligent clothing: first and second generation clothing with adaptive thermal insulation properties:

This paper deals with the idea that one of the inner thermal insulation layers of a garment may be replaced by expanding the air chambers in the form of an expanding thermal insert, which is inflated with air causing the chamber thickness and thermal insulation properties to change. The chambers are controllable so that the thermal insulation properties can be changed, and by connecting with an appropriate control, the architecture of an article of clothing can be designed such that it can independently monitor changes in its environment and change its thermal insulation properties in accordance with changes in its external and internal environment. In this way, it acquires the characteristics of intelligent clothing. The paper presents idea concepts, development, structural architecture and general characteristics of two generations of intelligent clothing with adaptive thermal insulation properties. The expanding thermal inserts are situated between the outer shell and the lining and are the key element of this type of new clothing. In the first generation of intelligent clothing the expanding inserts were designed in combination with three horizontal chambers that can be sealed in three horizontal layers, whereby it is possible to make six adaptable discontinuous levels of thermal insulation. In the second generation, ribbed expandable chambers were used. Their thickness is continuously changeable according to the pressure change in the chambers, whereby the value of thermal insulation of the chambers can be continuously adapted. The functioning of this clothing is based on the integration of sensors for internal and external temperature and air pressure in the chambers, on a microcontroller with regulation software and actuators to control the expanding insert. When wearing this kind of clothing, the microcontroller system monitors changes in ambient temperature and clothing microclimate depending on the wearer’s physical activity, compares them with the achieved thermal protection and makes autonomous decisions on the required increase or decrease in thermal protection. Since this clothing follows changes in its internal and external environment, estimates the real and necessary state, makes decisions and independently performs the adaptation of thermal insulation to a level that it ensures constant thermal comfort, it can be claimed that such a garment has the basic attributes of intelligent clothing. The paper describes the functioning of two types of thermal insulation chambers, the sensor system used, micropneumatic components, the microcomputer system, the flow chart of the algorithm of intelligent behavior, the complete built-in architecture of all technical subsystems, features of the first and second generation and the observed good and bad points of the conceptual approach to the development of intelligent clothing with adaptive thermal insulation properties.

Creating a Network Planning Diagram: MenâÂÂs Trousers ProductionProject

Methods of network planning are an instrument to manage and control the flow of complex inter-related activities. To project resulted in success, as an essential part of the project is outlined and described his previous careful planning while successful, cost-effective and quality management. The paper discusses the development of a network planning diagram for men’s trousers production project. The results of the work shows a sketch of men’s trousers, examination and duration of the activity in cutting room, interdependence of activities in cutting room and diagrams that are made using Critical Path Method (CPM) and display activities in the time diagram using a MS Project software package.