Subgrade moisture content varies with environmental and soil conditions and has significant influence on pavement performance. Therefore, it is important to establish realistic estimates of expected subgrade moisture contents to account for the effects of this variable on predicted pavement performance during the design stage properly. The initial boundary soil suction profile for a given pavem...

Abstract Drying is a dehydration process that can help to prolongate storage time, improve product quality, and reduce transportation cost. Although being applied for food processing long the drying still needs be further investigated optimizing dryer design operations. Among thermal physical properties of material, effective diffusivity moisture an essential input parameter calculation. This t...

This paper will detail the design and manufacturing elements of near hermetic air cavity packages produced by injection molding of low moisture diffusivity polymers. The R-Pak process uses a patented sealing methodology to take maximum advantage of the properties of the starting polymeric material. The material properties and advantages will be presented. The very low moisture diffusivity of th...

Fiber reinforced polymer composite (FRPC) materials are extensively used in lightweight applications due to their high specific strength and other favorable properties including enhanced endurance corrosion resistance. However, these inevitably exposed moisture, which is known drastically reduce mechanical caused by moisture absorption often accompanied with plasticization, weight gain, hygroth...

Abstract To reveal the effects of microstructure characteristics including fiber shape, void, distribution pattern, and interphase on transverse moisture diffusivities unidirectional composites, steady analysis method based Fick’s law is adopted. The predicted numerical results are compared with from analytical models to demonstrate accuracy. From simulation results, it found that increase in o...

the objective of this study was to investigate the drying kinetics of oyster mushroom, pleurotus ostreatus mushrooms were dried using a cabinet-type convective dryer. air temperatures of 50, 60 and 70 oc were used for the drying experiments. the experimental drying data were fitted to different theoretical models to predict the drying kinetics. nonlinear regression analysis was performed to rel...

The effect of temperature and moisture content on the thermal properties such as thermal conductivity, specific heat andbulk thermal diffusivity was evaluated. The thermal conductivity was measured by the transient technique using a line heat source. The maximum slope method was used to analyse the line source heating data for thermal conductivity determination. The specific heat capacity was m...

In this study, the effect of hygrothermal conditioning on the moisture diffusion properties of the fabric composite (glass fiber/epoxy resin) was investigated. The water uptake of the specimens conditioned in humid environment at different relative humidities (0, 60 and 96 % r.h) at constant temperature (60°C) was evaluated by weight gain measurements. The moisture diffusion properties of the f...

In this work, we tried to evaluate mass transfer during a combined infrared-vacuum drying of kiwifruits. Infrared radiation power (200-300 W) and system pressure (5-15 kPa), as drying parameters, are evaluated on drying characteristics of kiwifruits. Both the infrared lamp power and vacuum pressure affected the drying time of kiwifruit slices. Nine different mathematical models were evaluated f...