The subjective and objective evaluation of different types of jackets meant for cold weather condition has been done. Four jackets have been produced with different types of insulative layers. Knitted polyester fabric and polyester polymer coated fabric have been used as inner and outer layers respectively for all the four jackets. Polyester needle punched non woven fabrics produced from finer fibre (1.5 den) and hollow fibres (6 and 15 denier), and air bonded nonwoven polyester fabrics are used as middle layer. The wear trial study has been performed in the environmental chamber at three different temperatures, viz. 10°C, 0°C and -10 °C for 80 min duration according to EN ISO 10551:2001 and the jackets are evaluated by wearer for the thermal comfort at start, middle and end of the test. The clothing layers used in the jackets are objectively evaluated for thermal and evaporative resistance by sweating guarded hot plate according to ASTM F 1868-Part C. In wear trail study, the body mass of the wearer with and without clothing, weight of jackets and other clothing is measured before and after each test along with the microclimate temperature and relative humidity at eight different parts of the body according to EN ISO 9886:2004. The Spearman’s correlation coefficient, calculated between subjective and objective evaluation, is found to be high at lower ambient temperature. The jackets consisting of hollow fibres are found to perform better in cold weather conditions. The jacket showing maximum thermal insulation in objective evaluation is found failed to give comfortable feel to the wearer in wear trials.
COBISS.SI-ID: 17648406
Wearing comfort is one of the key features that should be taken into account in clothing design. This chapter provides an overview of the ease allowance adopted to provide comfort during body motion. It begins with a discussion of the key terms and role of the ease allowance. After this introduction, the interaction between body motion and clothing as a shell are explained. The chapter then discusses the fit and allowance for comfort and wearability, and also includes a detailed overview of various kinds of ease allowance requirements for different articles of clothing.
COBISS.SI-ID: 17531670
Clothing is a dynamic system for providing appropriate thermo physiological comfort during wear. Comfort that is felt by wearing clothing is a complex subjective perception, and is a decisive criterion for evaluating the quality of the particular clothing in use, which is expressed as the results of a balanced process of heat transfer around the body, clothing, and environment. This contribution provides a survey of the physiological responses of the human body during different activities: movement (free time garment sets, summer women's clothing, business garments), sleep (bedding mattresses), and drive (car seats) under various environmental conditions. The investigation shows that both the physiological responses of human body, which is expressed as a function of thermophysiological performance of clothing during wearing, and the perception of the personal thermal state are important criteria for estimating the thermal characteristic of a clothing system.
COBISS.SI-ID: 18014230
Fabrics are a type of textile structures, which share the complex characteristics of fibres properties, yarn structure and fabric construction. Their behaviour depends on structural characteristics such as mechanical properties, because the responses of fabrics to applied loads may incorporate elastic, viscoelastic, frictional and/or plastic parts. The contribution presents a study of the relationship between the structural characteristics of fabrics and their mechanical properties. The investigation is subdivided into two parts. The first part presents the study of directions of yarn twist on structural characteristics of fabrics and their behaviour, whereas the second part of the investigation is concerned with studying the influence of structural characteristics of fabrics on their particular mechanical properties.
COBISS.SI-ID: 18152982
The purpose of this research was to develop a generalized adaptive 3D body model the posture of which could be adapted to different positions in order to perform a virtual prototyping of garments for people with limited body abilities. The digital data of a tested person%s body was acquired using the GOM Atos scanning system. Careful surface reconstruction was performed in order to provide an adequate mesh for further posture adaptation. The experimental part of this article presents the usages of a variety of graphic programs in order to provide an adaptive 3D body model through kinematic skeleton construction. The mesh-deformation during posture adaptation was improved using advanced tools of applied software packages. The usefulness of the gained 3D body model was determined by calculating the differences between the real and digital 3D body model measurements.
COBISS.SI-ID: 18309654