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1.
In order to investigate the relationship between subjective sensation for fabric sound and touch and the objective measurements,
eight different apparel fabrics were selected as specimens. Sound parameters of fabrics including level pressure of total
sound (LPT), level range (ΔL), and frequency differences (Δf) and mechanical properties by Kawabata Evaluation System (KES) were obtained. For subjective evaluation, seven aspects of
the sound (softness, loudness, pleasantness, sharpness, clearness, roughness, and highness) and eight of the touch (hardness,
smoothness, fineness, coolness, pliability, crispness, heaviness, and thickness) were rated using semantic differential scale.
Polyester ultrasuede was evaluated to sound softer and more pleasant while polyester taffeta to sound louder and rougher than
any other fabrics. Wool fabrics such as worsted and woolen showed similar sensation for sound but differed in some touch sensation
in that woolen was coarsest, heaviest, and thickest in touch. In the prediction model for sound sensation, LPT affected postively
subjective roughness and highness as well as loudness, whileΔL was found as a parameter related positively with softness and pleasantness. Touch sensation was explained by some of mechanical
properties such as surface, compressional, shear, and bending properties implying that a touch sensation could be expressed
by a variety of properties. 相似文献
2.
Changing porosity of knitted structures by changing tightness 总被引：1，自引：0，他引：1
A geometrical model of plain knitted structures is discussed in depth to understand the yarn path in a knitted loop. A theoretical
model has been created to predict the porosity of a knitted structure depending on the geometrical parameters, such as course
spacing, wale spacing, stitch length, fabric thickness, count of yarn and fibre density. Polyester and nylon plain knitted
fabrics were produced to different tightness, and porosity was determined by measuring the weight. The validity of the model
was confirmed by experimental results, using different plain knit fabrics. The porosity of a knitted structure can be changed
by reducing the yarn thickness and the stitch length; however this would influence the courses and wales per unit length in
the structure. 相似文献
3.
All kinds of instrumental testing methods have been attempted to substitute for sensory analysis of fabric softness, however,
the prediction performance is poor. This alone necessitates a deep investigation and understanding of the difference between
sensory analysis and instrumental testing under the comparable constrained conditions. By establishing an equivalent biomechanical
model to the handling manner in which human fingers sense lateral compression properties of fabric, the mechanistic principle
of sensory evaluation on fabric softness property is explored and compared with instrumental testing principle by two proposed
indexes, namely the mechanical sensitivity of touch receptors and the sensory sensitivity of human tactile system. The results
show that the mechanical sensitivity of human touch receptors leads to the intrinsic difference of sensory analysis from instrumental
test on fabric softness by lateral compression. The mechanical sensitivity monotonously changes with the scaling coefficients
and the stiffness coefficients of quasi-static and nonlinear compression deformation characterizing both fabric and human
skin. The sensory sensitivity depends on both the mechanical sensitivity and the ability of human central system to interpret
the information from the peripheral nervous system. The conclusion is that the two-level sensitivity leads to the intrinsic
difference between sensory analysis and instrumental evaluation on fabric softness by lateral compression. 相似文献
4.
杂粮供应链区块链多链追溯监管模型设计 总被引：4，自引：3，他引：1
针对杂粮产品供应链链条长、主体多、区块链追溯过程数据无法差异化共享、链上数据难以实时监管等难题,通过分析杂粮供应链环节业务流程与监管特性,提出了基于区块链多链架构的杂粮追溯模型,并在此基础上建立多链数据存储架构,设计了基于监管授权组网建链的网络准入机制,并通过智能合约实现数据的链前监管与追溯节点的链上管控。为验证模型有效性,基于Hyperledger Fabric设计并实现区块链追溯系统,对山西忻州杂粮应用案例进行分析。在安全方面,企业组网授权扩散性测试密文平均改变率为82.53%,相关性测试密文平均改变率为82.39%,具备较高的安全性与混淆性。在效率方面,消费者查询公开追溯数据平均时间为0.415 s,监管部门调用跨链接口查询企业敏感追溯数据平均时间为0.871 s。结果表明,该研究设计并实现的面向监管的杂粮多链追溯系统在满足消费者追溯需求的基础上,能够实现追溯数据账本与链间交易记录的实时管控,为农产品区块链追溯监管系统研究提供借鉴与参考。 相似文献
5.
为了促进华池县科学养羊,测定了该县不同区域、不同海拔高度的土壤和舍饲下的绒山羊毛中的微量元素含量,并对其日粮现状、生产性能及健康状况进行了调查.结果表明,华池县土壤中Cu、Fe、Zn、Mn、Se 5种元素含量低于全国平均值.Fe、Mn、Co、Ni、Cr元素丰盈,可满足动物生长需要.Cu、Zn、Se、I不足,Cd含量在安全范围内.建议山羊日粮中苜蓿(最大量)占50%～60%,玉米青贮或玉米秸秆20%～30%,玉米、麸皮等能量饲料18%～20%,CaHPO4 1.5%,并适量补充Cu、Zn、Se、I微量元素. 相似文献
6.
A geometrical model of weft knitted spacer structures made with mono-filament yarn has been analysed to understand the spacer
yarn path. Theoretical models have been created to predict the porosity and the radius of the capillaries of a knitted spacer
structure depending on their geometrical parameters, such as course spacing, wale spacing, stitch length, fabric thickness,
count of yarn and fibre density. Polyester knitted spacer fabrics were produced with different parameters; their porosity
was determined by measuring the weight and compared with the theoretical porosity. The validity of the model was confirmed
by experimental results. The porosity of knitted spacer structures made out of mono-filament yarn can be maintained above
a certain level by adjusting the fabric parameters such as fabric thickness, course spacing and wale spacing. 相似文献
7.
为了解决农业机械制造企业间质量管理存在隐患、产品故障频繁发生、质量无法保障等问题,提出了一种基于区块链的农业机械溯源方案.基于Hyperledger Fabric区块链开发平台,针对农业机械产品制造过程质量管理问题,构建了农业机械制造过程质量溯源链;开发出供用户与企业用户使用的溯源系统.确保农业机械在制造环节中质量问题... 相似文献
8.
Mass wasting processes in a periglacial environment are considered to result from a combination of frost creep and gelifluction. The relative importance of these processes is often difficult to determine, but appears to be related to factors such as slope angle, soil moisture content, soil texture, and vegetation cover. Further, the importance of any one of these factors can vary from year to year, thereby making long term predictions of slope stability or reconstructions of behaviour history difficult. This study uses two-dimensional macro-fabric analysis as a recorder of the dominant mode of mass-wasting on a slope. 相似文献
9.
针对细旦涤纶与苎麻这两种纤维在细度、刚度与长度等方面反差很大的情况,通过探索新的纺织染整加工工艺,采用酶处理等特殊的后整理技术,对纺纱、机织、染整、针织逐项推敲最优的工艺参数,开发出理想的面料。 相似文献
10.
苎麻／涤Sirofil织物性能及品质研究 总被引：4，自引：0，他引：4
将Sirofil纺纱方法应用于苎麻/涤纶混纺,开发了苎麻/涤纶Sirofil织物。基于FAST、KES客观评价系统以及织物的基本物理指标的测试结果,对设计的织物的性能和风格进行了讨论和评价。 相似文献