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Clothing biosensory engineering

Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong

Woodhead Textiles Series No. 51

 - describes the process of Clothing biosensory engineering in detail
 - quantifies the decision making processes applied to optimally convert resources to meet various sensory requirements
 - includes theoretical and experimental observations and examples of actual product development

Human sensory perception of clothing involves a series of complex interactive processes, including physical responses to external stimuli, neurophysiological processes for decoding stimuli through the biosensory and nervous systems inside the body, neural responses to psychological sensations, and psychological processes for formulating preferences and making adaptive feedback reactions.

Clothing biosensory engineering is a systematic and integrative way of translating consumers’ biological and sensory responses, and psychological feelings and preferences about clothing, into the perceptual elements of design. It is a link between scientific experimentation and commercial application to develop economic solutions to practical technical problems.

Clothing biosensory engineering quantifies the decision-making processes through which physics, mathematics, neurophysiological and engineering techniques are applied to optimally convert resources to meet various sensory requirements – visual/thermal/mechanical. It includes theoretical and experimental observations, computer simulations, test methods, illustrations and examples of actual product development.

ISBN 1 85573 925 9
ISBN-13: 978 1 85573 925 3
April 2006
408 pages  234 x 156mm  hardback  
£150.00 / US$255.00 / €190.00

Usually dispatched within 24 hours

About the authors

Dr Li is a Professor at The Institute of Textiles and Clothing at The Hong Kong Polytechnic University, Hong Kong. He is a Fellow of The Textile Institute, a member of several professional bodies and has more than 350 scientific publications and patents.

Dr Wong is a Postdoctoral Fellow at The School of Nursing, The Hong Kong Polytechnic University, Hong Kong

Contents

Introduction
Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong
 - Consumer trends
 - Definition of sensory comfort
 - Human-clothing-environment system
 - Clothing biosensory engineering
 - References

Neurophysiology and Sensory comfort
Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong
 - Perception of comfort
 - Psychological research techniques
 - Comfort sensory descriptors
 - Psychophysics
 - Scales of measurement
 - Scales to measure direct responses
 - Wear trial techniques
 - Conclusion
 - References

Neurophysiology and sensory perceptions
Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong
 - Senses and comfort
 - Neurophysiological basis of sensory perceptions
 - Perception of sensations related to mechanical stimuli
 - Perception of thermal and moisture sensations
 - Perception of texture
 - Perception of fabric hand
 - References

Physiology of thermal comfort
Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Thermal comfort
 - Thermophysiology of the human body
 - Thermoregulation of the human body
 - Dynamic thermal interaction between the body and clothing
 - References

Physics of thermal comfort
Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Heat and moisture transfer
 - Dynamic heat and moisture transfer in fabric
 - Moisture exchange between fiber and air
 - Boundary conditions
 - Physical properties of fibers and fabrics
 - Method of solution
 - Moisture sorption of wool fabrics
 - Behavior of fabrics made from different fibers
 - References

Thermal and moisture sensations
Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Coolness to the touch
 - Warmth to the touch
 - Dampness sensation
 - Clamminess and moisture buffering during exercise
 - Environmental buffering
 - References

Tactile sensation
Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Fabric prickliness
 - Fabric itchiness
 - Fabric stiffness
 - Fabric softness
 - Fabric smoothness, roughness and scratchiness
 - Garment fit and pressure comfort
 - References

Dimensions of sensory comfort perceptions
Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong
 - Individual sensations involved in the perception of sensory comfort
 - Development of sensory factors
 - Thermal-wet comfort
 - Tactile comfort
 - Clothing pressure comfort
 - References

Overall comfort perception and preferences
Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Influences of different factors toward overall comfort perception
 - Calculation of subjective preference on clothing
 - Relationship between overall comfort perception and preference
 - References

Prediction of clothing sensory comfort
A S W Wong and Y Li, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Prediction of fabric hand
 - Predictability of sensory comfort
 - Predictability of subjective preferences
 - Prediction of sensory factors
 - Prediction of clothing sensory comfort on the basis of subjective measurements
 - Prediction of clothing sensory comfort on the basis of fabric physical properties
 - Application of hybrid models in the prediction of clothing sensory comfort
 - References

Thermal properties
J Hu, Y Li, and K W Yeung, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Heat production and heat loss
 - Thermal comfort
 - Thermal insulation
 - Thermal conductivity
 - Cool/warm feeling
 - Thermal manikin
 - Other apparatus for fabric thermal functional evaluation
 - References

Water vapour transfer
J Hu, Y Li, and K W Yeung, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Heat and moisture exchange of liquid water with water vapour
 - Water vapour
 - Water vapour transfer with temperature gradient
 - Comparison of water vapour transfer with and without temperature gradient
 - Conclusion
 - Reference

Liquid moisture transfer
J Hu, Y Li, and K W Yeung, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Absorbency
 - Wettability
 - Waterproof
 - Contact angle
 - Moisture management
 - Experimental
 - References

Coupled heat and moisture transfer
S Wang and Y Li, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Moisture transfer with temperature gradient
 - Dynamic thermal and moisture buffering
 - Results and discussion
 - Effect of PCM materials
 - Dynamic thermal and moisture sensations
 - References

Air permeability
J Hu, Y Li, and K W Yeung, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Measurement of air permeability
 - Humidity-dependent air permeability
 - References

Mechanical tactile properties
J Hu, Y Li, and K W Yeung, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Outline of the FSTT measuring system
 - Experimental
 - Results and analysis
 - Conclusion
 - References

In-vivo physiological measurements
J Hu, Y Li, and K W Yeung, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Temperature measurements
 - Humidity measurements
 - Pressure measurements
 - Sweating rate and skin wetness measurements
 - Skin blood flow measurements
 - Oxygen consumption measurements
 - Heart rate measurements
 - Conclusion
 - References

Application of clothing biosensory engineering
Y Li and A S W Wong, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Area of application
 - Consumer research
 - New product development
 - Consumer subjective evaluation
 - Test methods and instruments
 - References

Mechanical and thermal sensory engineering design
Y Li, Hong Kong Polytechnic University, Hong Kong and B Z Wang, Guangdong Academy of Agricultural Sciences, China
 - Functional requirements of a mechanical sensory engineering design system
 - Fundamental work in the development of mechanical engineering design systems (MEDS)
 - Structural organization of the system
 - Example
 - Thermal sensory engineering design
 - Thermal sensory engineering design process and system
 - Application of TSEDS

Sensory comfort of denim product
Y Li, Z X Xian University of Engineering Science and Technology, China, A S W Wong and Yilin Kwok, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Human subjective perception on denim products
 - Study of sensory comfort in denim jeans
 - Conclusions
 - References

Sensory comfort of tennis wear
A S W Wong, Y Li and Y Kwok, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Experimental
 - Results and findings
 - Conclusions
 - References

Sensory comfort of aerobic wear
A S W Wong and Y Li, Hong Kong Polytechnic University, Hong Kong
 - Introduction
 - Experimental
 - Result
 - Sensory comfort during exercise
 - Fabric properties and comfort performance
 - Comfort performance of different brands
 - Conclusion
 - References