Coconut fibres and laminates with Jabon trunk (Anthocephalus cadamba Miq.) veneer for hybrid plywood composites: dimensional stability and mechanical properties

Dungani, Rudi; Karliati, Tati; Hadiyane, Anne; Suheri, Asep; Suhaya, Yoyo

doi:10.1007/s00107-019-01432-9

Cited by 5 publications

(4 citation statements)

References 38 publications

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“…When the mean SDWR values were compared, the highest values were obtained in beech plywood (873 N), ozigo plywood (561 N), and okoume plywood (486 N), respectively. According to this result, it was understood that the mean SDWR values were directly proportional to the density of the plywoods, in accordance with other studies in the literature [37][38][39][40].…”

Section: Plywood Species Effect On Sdwrsupporting

confidence: 90%

Effect of Freeze–Thaw Cycling on the Screw Direct Withdrawal Resistance of Beech, Ozigo, and Okoume Plywoods

Birinci

Kaymakçı

2023

Forests

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Wood has been used in the construction, furniture, and automotive industries since ancient times. In areas where wood material is used, it is combined with various fasteners. The durability of the products produced using wooden materials depends on the performance of the fasteners. Since wood is a hygroscopic and biodegradable material, various changes occur in its structure when exposed to external weather conditions. Wood materials used especially in the field of construction and urban furniture are exposed to effects such as extreme temperatures, freezing, moisture, or drying depending on the seasons. In this study, the effect of the freeze–thaw cycling (FTC) process on screw direct withdrawal resistance (SDWR) of plywood produced from beech, ozigo, and okoume species was investigated. In this context, the effects of screwing time (before or after), screw orientation (face or edge), the number of cycles (0 to 7) in the FTC process, and plywood type parameters on SDWR were investigated. As a result of the tests, when the mean SDWR values were examined according to the plywood type, the highest values were obtained in beech, ozigo, and okoume plywood, respectively. Considering the screwing time parameter, it was determined that there was no statistically significant difference between the mean SDWR values in other plywood types except beech plywood (p < 0.05). When the screw orientation parameter was examined, screwing in the face direction gave better results than screwing in the edge direction in all plywood types. There was a decrease in the mean SDWR values that was inversely proportional to the increase in the number of cycles in FTC-treated plywood.

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Section: Plywood Species Effect On Sdwrsupporting

confidence: 90%

Effect of Freeze–Thaw Cycling on the Screw Direct Withdrawal Resistance of Beech, Ozigo, and Okoume Plywoods

Birinci

Kaymakçı

2023

Forests

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show abstract

“…When the mean SDWR values were compared, the highest values were obtained in beech plywood (873 N), ozigo plywood (561 N) and okoume plywood (486 N), respectively. According to this result, it was understood that the mean SDWR values were directly proportional to the density of the plywoods, in accordance with other studies in the literature [35][36][37][38]. Note: mean, arithmetic mean; SD, standard deviation.…”

Section: Plywood Species Effect On Sdwrsupporting

confidence: 89%

Effect of Freeze-Thaw Cycling on the Screw Direct Withdrawal Resistance of Beech, Ozigo, and Okoume Plywoods

Birinci¹,

Kaymakçı²

2023

Preprint

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Wood has been used in the construction, furniture, and automotive industries since ancient times. In areas where wood material is used, it is combined with various fasteners. The durability of the products produced using wooden materials depends on the performance of the fasteners. Since wood is a hydroscopic and biodegradable material, various changes occur in its structure when exposed to external weather conditions. Wood materials used especially in the field of construction and urban furniture are exposed to effects such as extreme temperatures, freezing, moisture, or drying depending on the seasons. In this study, the effect of freeze-thaw cycling (FTC) process on screw direct withdrawal resistance (SDWR) of plywood produced from beech, ozigo, and okoume species was investigated. In this context, the effects of screwing time (before or after), screw orientation (face or edge), number of cycles (0 to 7) in the FTC process and plywood type parameters on SDWR were investigated. As a result of the tests, when the mean SDWR values were examined according to the plywood type, the highest values were obtained in beech, ozigo, and okoume plywood, respectively. Considering the screwing time parameter, it was determined that there was no statistically significant difference between the mean SDWR values in other plywood types except beech plywood (p&lt;0.05). When the screw orientation parameter is examined, screwing in the face direction gave better results than screwing in the edge direction in all plywood types. There was a decrease in the mean SDWR values inversely proportional to the increase in the number of cycles in FTC-treated plywood.

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“…Some of the values compared according to the age of the tree are younger, so the values obtained from this study are generally higher. According to [9] Jabon wood is currently widely used as a substitute for raw materials in the wood frame industry and currently appears to be the most viable alternative raw material in wood-based industries, such as for the manufacture of composite plywood, glue-laminated lumber, and laminated veneer lumber ( LVL) [10][11][12]. Previously, according to [20] Jabon wood could be used for matches, packing crates, concrete molds, children's toys, pulp raw materials, and lightweight emergency construction.…”

Section: Potential Utilization As a Structural Materialsmentioning

confidence: 99%

“…Jabon wood is currently widely used as an alternative raw material in the wood frame industries, both for local needs and for export [9]. In addition, jabon wood and other fiber materials currently appear to be the most viable alternative raw material in wood-based industries, such as for the manufacture of composite plywood, glue-laminated lumber, and laminated veneer lumber (LVL) [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of jabon (Neolamarckia cadamba (Roxb.) Bosser) wood 13 years old and its potential utilization as a structural material

Herawati,

Anna,

Dabukke

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Jabon (Neolamarckia cadamba (Roxb.) Bosser) is a type of fast-growing tree that is expected to meet the national demand for wood because it has fast-growing properties. This study’s objective was to examine the mechanical properties of 13 years old jabon wood based on its position in the stem. The preparation of mechanical properties test samples and their tests refer to the British Standard (BS) 373 Methods of testing small clear specimens of timber and the American Society for Testing and Materials (ASTM) D143 Standard test method for small clear specimens of timber. Based on the results of the study, the stem parts (bottom, middle, and top) had no significant effect on the mechanical properties of wood except for the compressive strength parallel to the grain and hardness. In general, the mechanical properties showed an increase from the bottom to the top of the stem and from the pith toward the bark, although there were some differences. The mechanical properties of jabon wood obtained from this study generally showed higher values than jabon wood used in other studies with younger ages, although in general, it did not change the category of jabon wood from strength class III-IV. However, its use as a structural material would be more profitable than using a younger age of jabon wood, as it is usually harvested so far.

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Coconut fibres and laminates with Jabon trunk (Anthocephalus cadamba Miq.) veneer for hybrid plywood composites: dimensional stability and mechanical properties

Cited by 5 publications

References 38 publications

Effect of Freeze–Thaw Cycling on the Screw Direct Withdrawal Resistance of Beech, Ozigo, and Okoume Plywoods

Effect of Freeze–Thaw Cycling on the Screw Direct Withdrawal Resistance of Beech, Ozigo, and Okoume Plywoods

Effect of Freeze-Thaw Cycling on the Screw Direct Withdrawal Resistance of Beech, Ozigo, and Okoume Plywoods

Mechanical properties of jabon (Neolamarckia cadamba (Roxb.) Bosser) wood 13 years old and its potential utilization as a structural material

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