• Journal of the Korea Furniture Society
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• v.10 no.2
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• pp.17-27
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• 1999

As a countermeasure to reach self-sufficiency for wood supply and demand, we have to develop wood substitutes. Rice hull is the cheapest fiber material we can get in Korea, What is better the yield of rice hull amounts to 1 million tons per year. Before carrying out this study, new ecomaterial rice hull board for housing materials was developed successfully. In order to evaluate whether the rice hull board with or without bioceramic treatment is suitable for housing materials, we studied the environmental effect of the above materials in comparison with the polycarbonate, stainless, or concrete on the adaptation (body weight, water/feed consumption, general signs, urinalysis, autopsy, etc) and the reproduction(litter size, newborn adaptation, etc)of mice. In conclusion, the concrete cage was the worst in the adaptation and so was the stainless steel cage in the reproduction. The rice hull board cage with or without bioceramic treatment was superior or equivalent to other material cages from the standpoints of the adaptation and reproduction.

• Journal of the Korea Furniture Society
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• v.26 no.4
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• pp.392-397
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• 2015

This study was carried out to analyze the effects on mechanical properties of deteriorated wood member by outdoor condition. The surface color, mechanical properties and structural stability of traditional wooden structures, exposed in water and UV, could be changeable. For the purpose, accelerated weathering test based on outdoor condition was carried out. The weathering time levels were composed 0, 500, 1000, 1,500 and 2,000 hours and mechanical properties were evaluated on each specimen according to weathering time level. Bending properties were decreased on weathering but recovered after 1,000 hours. Fatigue and impact strength were decreased to 1,000 hours and did not changed since then. Abrasion resistance was minimized in 1,000 hours. This results could be utilized for effectively stability management of traditional wooden structures and members.

• Journal of the Korea Furniture Society
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• v.25 no.1
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• pp.72-78
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• 2014

The objectives of this study were to identify the species of a wooden container for written prayers, Sotong, from Guryongsa Temple in Wonju, which is currently stored in the Museum of Woljeongsa, and to date it using wiggle matching of radiocarbon dates. It was made exclusively of basswood, Tilia spp. Wiggle matching the radiocarbon dates of three rings resulted in A.D. 1670 to 1691 (${\pm}2{\sigma}$) for the outermost ring. This interval suggested the age of 'Guryongsa Sotong' as the late $17^{th}$ or early $18^{th}$ century, which became a first date on 'Sotong' in Korea.

• Journal of the Korea Furniture Society
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• v.17 no.3
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• pp.1-16
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• 2006

Based on data collected by the State Forestry Administration (SFA) and other databases, this paper describes the current status, future trend and general policies in China's forestry. Forestry sector plays an important role in GDP growth of China. As a result forestry industry value output is increasing day by day. There is huge gap between demand and supply of timber projected in 2010. As a result it is necessary to develop fast growing, high yield forest following some specific policies. The ultimate goals of forestry are to construct or improve industry infrastructure, overall upgrade of forest industry structure, income improvement of forest employees and peasants, polices renewal and technology improvement, acceleration of forest processing with high-tech.

• Journal of the Korea Furniture Society
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• v.17 no.3
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• pp.79-85
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• 2006

Temperature of board surface was monitored during drying using an IR image measurement system. Boards were water-saturated and dried at the levels of four temperatures and three air velocities. At higher DB the surface temperature increased more steeply and level off period was significantly short. At the DB temperatures of 70, 80, $90^{\circ}C$ the period where the surface temperature was equivalent to WB temperature was constant regardless of air velocity while at $60^{\circ}C$ it decreased as air velocity increased. It was confirmed that a surface transfer coefficient increased with DB temperature. Variation of temperature profile on a wood surface increased with DB temperature and air velocity.

• Journal of the Korea Furniture Society
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• v.22 no.2
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• pp.132-139
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• 2011

Wood-anatomical studies on vines, one of the main materials for fork craftworks used in the past, were insufficient compared to those for trees. Therefore, it is important to identify the species of vines in order to preserve the vinery craftwork relics. In this study, the species of 31 samples (30 traditional baskets and one sculpture relic) obtained from Korea were identified. Twenty-two baskets among 30 baskets were identified as Cocculus trilobus DC, a perennial vine which has flexible xylem and thick fibers in phloem. The other baskets were identified as $Lespedeza$ spp., a shrub with tough xylem. The sculpture part was $Actinidia$ $arguta$ Planch., a perennial vine with chambered piths.

• Journal of the Korea Furniture Society
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• v.22 no.2
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• pp.126-131
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• 2011

The purpose of this study were to analyze the species and tree-ring dates of coffin woods excavated at Yerim site in Yesan, Chungnam, Korea. We sampled 12 pieces of woods from two coffins. The species of all coffin woods were identified as red pine group, most likely, $Pinus$ $densiflora$. The last rings of both coffins were dated A.D. 1557 and A.D. 1601, respectively. The tree-ring dates indicated that the coffins were made in the late 16th and early 17th century.

• Journal of the Korea Furniture Society
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• v.11 no.2
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• pp.55-60
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• 2000

Liquid ammonia treatment known as the most effective Wood plasticization method, was applied to two typical domestic species, Pinus densiflora, Castanea crenata. Small specimens of 30mm width, 300mm length and two thicknesses, 5 or 10mm, were used. For 5mm thick Specimens, Pinus densiflora was quite well plasticized iker 4 hour liquid ammonia treatment, while Castanea crenata was not plasticized even after 4 hour treatment. Specimens of 10mm thick Pinus densiflora were hardly plasticized, but those with kerfs were bent somewhat easily, With the increase of liquid ammonia treatment time the thermal conductivity of Pinus densiflora increased, while that of Castanea crenata didn't Presteaming before liquid ammonia treatment didn't improve the plasticization of both species.

• Journal of the Korea Furniture Society
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• v.11 no.1
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• pp.25-29
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• 2000

This study was carried out to analyze the ultrasonic properties of sound board which was glued with various adhesives and to evaluate which adhesive is the best for the acoustic radiation of the musical instrument. The results are as follows: 1. Animal glue is the best adhesive for the sound board with respect to the acoustic radiation ratio of the musical instruments. Epoxy resin and polyvinyl acetate resin are the next group, urea formaldehyde resin and Hot melt are the third group, polychloroprene(CR) resin is the lowest. 2. Epoxy resin, animal glue and Titebond(PVA) give the highest shear strength and the highest wood failure relatively Hot melt and polychloroprene(CR) resin do not meet the standard because of low wood failure.

• Journal of the Korea Furniture Society
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• v.17 no.1
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• pp.63-71
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• 2006

This study was carried out to resplace traditional virgin wood fiber by recycled MDF-waste fiber for the manufacture of high density fiberboard. For the recycling, MDF waste was disintegrated for 10 minutes and beaten for 15 minutes. There was no difference in formaldehyde emission by desiccator method between virgin wood fiber and disintergrated and beaten MDF-waste fiber. Fiberboard which was maded from 100% of disintergrated and beaten MDF-waste fiber showed similar physical and mechanical properties to those of virgin fiber. The yield of recycled fiber from MDF waste was 85%.