scholarly journals Mechanical properties of mammalian and fish glues over range of temperature and humidity

2022 ◽  
Vol 53 ◽  
pp. 226-235
Author(s):  
Alexandra Bridarolli ◽  
Ashley Amanda Freeman ◽  
Naoki Fujisawa ◽  
Michał Łukomski
Keyword(s):  
Mechanical Properties ◽  
Temperature And Humidity

Environmental Effects on the Static and Fatigue Behaviours of Hemp Fibre under Tensile Loading

2015 ◽  
Vol 798 ◽  
pp. 410-418
Author(s):  
Anh Dung Ngo ◽  
Thu Nga Ho ◽  
Khalid Sefrioui Manar
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Failure Modes ◽  
Harmful Effect ◽  
Tensile Loading ◽  
Ambient Air ◽  
Absorption Mechanism ◽  
Hemp Fibre ◽  
Temperature And Humidity ◽  
Static Tensile

Environmental and loading mode effects on the tensile properties of Hemp fibre were investigated. At first, absorption of moisture into the fibre from ambient air and absorption of water into the fibre in immersion were studied. Then static and cyclic loadings tensile tests were conducted in various temperature and humidity conditions. It was found that, in ambient air (0% < RH < 80%) the moisture content of the studied fibre decreased with the increase of temperature conformed to the GAB model suggesting a multilayer absorption mechanism. On the contrary, for the fibre immersed in water, the moisture content increased with the increase of temperature. The activation of temperature on the diffusion of the water into the fibre by micro-pores and lumens jointly with the lack of possibility for the imprisoned water to evaporate might be the cause of this effect. Experimental results suggested that temperature and humidity could individually reduce the mechanical properties of Hemp fibre. Their interaction caused even a more harmful effect. Semi empirical and neural networks were used to predict the hygro-thermal effects on the mechanical properties under static tensile loading. Broken surfaces of the specimens were also examined showing different failure modes for static and cyclic tensile loadings. Finally, the value of the cellulose micro-fibrils angle (MFA) estimated using the static tensile stress-strain curve was 8.4o±1.9o.

Study on Relationship between Mechanical Properties and Seam Smoothness Worsted Fabric

2011 ◽  
Vol 175-176 ◽  
pp. 999-1004
Author(s):  
Hong Ni ◽  
Rui Fan
Keyword(s):  
Mechanical Properties ◽  
Air Temperature ◽  
Brand Development ◽  
Temperature And Humidity ◽  
Environmental Air ◽  
Fiber Materials ◽  
In Suit ◽  
The Relationship ◽  
Garment Seam

The instability of seam smoothness for worsted fabric is always a big problem in suit industry. With substantial development and application of new worsted fabric as well as the comprehensive application of various fiber materials，it is difficult to control seam smoothness of suit, creating the quality of suite to descend and adversely affecting the brand development in suit industry. The purpose of this paper is, therefore, intending to study the relationship between worsted fabric mechanical properties and garment seam smoothness grade as well as the effect of environmental air temperature and humidity conditions on smoothness of seam sample, by selecting several pieces of worsted fabrics and testing their mechanical properties through FAST. The goal of this paper is to facilitate textile and garment enterprises to improve their own textile process and finishing as well as the sewability of worsted fabrics.

Study on buffering characteristics of expanded polyvinyl alcohol influenced by temperature and humidity

2016 ◽  
Vol 54 (1) ◽  
pp. 73-86 ◽  
Author(s):  
Hong Zhu ◽  
Dongmei Wang
Keyword(s):  
Mechanical Properties ◽  
Relative Humidity ◽  
Polyvinyl Alcohol ◽  
Energy Absorption ◽  
Static Compression ◽  
Liquid Retention ◽  
Temperature And Humidity ◽  
Liquid Products ◽  
Different Temperatures ◽  
Wet Condition

Expanded polyvinyl alcohol is regarded as excellent buffering and leak-proof packaging material of liquid products due to its characteristics such as good liquid absorption and liquid retention properties, good mechanical properties under dry condition, and good rebound resilience under wet condition. Through static compression experiment, this study analyzed the mechanical properties and energy absorption properties of expanded polyvinyl alcohol with different densities under different temperatures and relative humidity. The experimental results showed that the effect of ambient temperature and humidity on expanded polyvinyl alcohol performance was mainly to change its internal moisture. The initial elastic modulus, plateau stress, and energy absorption value per unit volume of expanded polyvinyl alcohol increased as the density increased, the relative humidity decreased, or temperature increased. The above research can provide reference for applications of expanded polyvinyl alcohol on buffering packaging in actual logistic environment.

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