MADERAS: Ciencia y Tecnología
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Influence of specimen orientation on determination of elesticity in static bending

Felipe Hideyoshi Icimoto Fabiane Ferro Diego Henrique De Almeida André Luís Cristoforo Francisco Antônio Rocco Lahr

Published in Maderas Ciencia y tecnología

Wood is a natural material and so many factors interfere in estimation of its physical and mechanical properties. Consequently variability in properties should be taken into account to rationalize its application. Longitudinal modulus of elasticity is one of the main mechanical properties of the material, and its value can be obtained via standardi...

Treatability of Melia composita using vacuum pressure impregnation

Sadhna Tripathi Pawan Kumar Poonia

Published in Maderas Ciencia y tecnología

The performance of treated wood in the field is ultimately affected by retention and penetration of preservative in wood. In the present study, a new preservative system ZiBOC and a commercially used preservative copper-chrome-arsenate (CCA) were used for evaluation of treatability of Melia composita by the vacuum pressure method at different press...

Properties of OSB panels with veneer inclusion (AOP Paper)

Rafael Farinassi Mendes Antônia Amanda da Silva César Marcela Gomes da Silva Lourival Marin Mendes Amélia Guimarães Carvalho

Published in Maderas Ciencia y tecnología

This work aimed to evaluate the effect of veneer inclusion with different wood species, and also different levels of pressing pressure applied in the moment of the veneer inclusion over physical mechanical properties of already consolidated OSB (Oriented Strand Board) panels. Treatments were arranged in factorial scheme 4 x 2 (four wood types for v...

Effect of ultrasound pretreatment on wood prior to vacuum drying

♠ Zhengbin He Zijian Zhao Fei Yang Songlin Yi

Published in Maderas Ciencia y tecnología

The influence of ultrasonic pretreatment prior to vacuum drying of Chinese fir specimens was examined in this work. In the pretreatments, wood samples were immerged in a distilled water bath and were treated using two wave frequencies for four different elapsed times to investigate effects of ultrasonic frequency and treatment duration. Then the wo...

Mejoramiento de la productividad en una industria maderera usando incentivo remunerativo

Patricio Pino-Pinochet Mauricio Ponce-Donoso Carmen Avilés-Palacios Óscar Vallejos-Barra

Published in Maderas Ciencia y tecnología

Se estudió el efecto en la productividad de la elaboración de blanks a partir de la implementación de un modelo de incentivo salarial del tipo Improshare, dirigido al personal de una empresa chilena de remanufacturado de maderera que produce molduras y marcos de puerta (ayudante, operador medio y operador máster), para lo cual se compararon dos per...

Analytical and experimental studies on stress capacity with modified wood members under combined stresses

H Abdolzadeh Gh Ebrahimi M Layeghi M Ghassemieh César Rivera

Published in Maderas Ciencia y tecnología

The stress capacity of joints made of modified wood members under loading can be affected by design of joints and type of adhesive. Hence, these factors were addressed in this study by assessment of stress capacity variations in corner joints under diagonal applied compressive load induced combined stresses. The joints with mitered and butted desig...

Caracterización estructural de madera aserrada de pinos cultivados en Uruguay

Laura Moya Andrea Cardoso Matías Cagno Hugo O´neill

Published in Maderas Ciencia y tecnología

RESUMEN La disponibilidad de madera aserrada producida en Uruguay ha tenido un incremento significativo en los últimos treinta años debido a la política gubernamental para promover plantaciones de rápido crecimiento. Para aplicaciones estructurales, la madera debe estar clasificada según su resistencia mecánica, rigidez y densidad, y sus propiedade...

Propiedades físico-mecánicas de una guadua mexicana (Guadua aculeata)

Idalia Zaragoza-Hernández Víctor Rubén Ordóñez-Candelaria Guadalupe Bárcenas-Pazos Amparo Máxima Borja-De La Rosa Francisco Zamudio-Sánchez

Published in Maderas Ciencia y tecnología

RESUMEN En este artículo se presentan las propiedades físicas y mecánicas del culmo de Guadua aculeata. El material de estudio se colectó en el predio " Las Margaritas " , Hueytamalco, Puebla, México. El marcado, derribo y ensayo se realizó tomando como referencia las normas ISO 22157-1 ISO e ISO/TR 22157-2. Se presentan valores promedio de los res...

Effect of spacing on some mechanical properties of narrow leaved ash (Fraxinus angustifolia) wood

Cengiz Guler Ibrahim Halil Sahin Serdar Aliogullari

Published in Maderas. Ciencia y Tecnologia

In this study, conducted to test the effect of spacing on wood quality; the effect of four different spacing types, applied in Adapazarı Süleymaniye plantation (Region 1. 3x2 m, Region 2. 3x2.5 m, Region 3. 3.75x3.75 m, Region 4. 4x4 m), on some mechanical properties of narrow leaved ash (Fraxinus angustifolia) have been studied. In the present st...

Air permeability of sugi (Cryptomeria japonica) wood in the three directions

Published in Maderas Ciencia y tecnología

To investigate the air permeability of sugi (Cryptomeria japonica) and the effect of grain directions on it, the air permeabilities of air-dried sugi sapwood and heartwood were determined along the three material directions of wood. The value of the longitudinal permeability was the highest and that of the radial permeability was the lowest. The pe...

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