𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Effects of machining method and grain orientation on the bonding strength of some wood species

✍ Scribed by Ayhan Özçifçi; Fatih Yapici

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
165 KB
Volume
202
Category
Article
ISSN
0924-0136

No coin nor oath required. For personal study only.

✦ Synopsis

This study was conducted to determine the effects of various machining methods and grain orientation on bonding strength of some wood species. For this purpose, Oriental beech (Fagus orientalis Lipsky.), Oak (Quercus robur), Scotch pine (Pinus sylvestris L.), Poplar (Populus tremula L.) and Uludag fir (Abies bornm ülleriana Matff.) were used as raw materials.

Phenol-formaldehyde (PF), poly (vinyl-acetate) (PVAc), polyurethane based Desmodur-VTKA (D-VTKA) and urea-formaldehyde (UF) adhesives were applied to one surface of the test samples. Bonding strength tests (based on TS EN 205) were applied on the connection surface. The test samples were machined with circular saw, band saw and thickness planer.

The results indicated that the highest bonding strength was obtained from Oriental beech wood samples bonded with PVAc adhesive (14.83 N/mm 2 ), while Poplar samples bonded with D-VTKA had the lowest values (2.99 N/mm 2 ). In addition, the machined surface of the tangential direction had higher bonding strength than that of the radial direction.

📜 SIMILAR VOLUMES

Effect of conditioning methods on the mi
Effect of conditioning methods on the microtensile bond strength of phosphate monomer-based cement on zirconia ceramic in dry and aged conditions
✍ Regina Amaral; Mutlu Özcan; Luiz Felipe Valandro; Ivan Balducci; Marco Antonio B 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 591 KB

## Abstract The objective of this study was to evaluate the durability of bond strength between a resin cement and aluminous ceramic submitted to various surface conditioning methods. Twenty‐four blocks (5 × 5 × 4 mm^3^) of a glass‐infiltrated zirconia–alumina ceramic (In‐Ceram Zirconia Classic) we

Unusually large effects of single excita
Unusually large effects of single excitations on the geometry of radical species and limiting spin-projection invariance of some correlated methods
✍ J.M.L. Martin; J.P. François; R. Gijbels 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 569 KB

For a number of radical species with heavy spin contamination, including BO, CCH, CN, CO+, NO, N3, and BN, it is shown that single excitations have a large effect, up to several hundredths of an A, on calculated bond distances. The effect decreases with increasing basis set size. Harmonic frequencie

Trends of the bonding effect on the perf
Trends of the bonding effect on the performance of DFT methods in electric properties calculations: A pattern recognition and metric space approach on some XY2 (X = O, S and Y = H, O, F, S, Cl) molecules
✍ Christos Christodouleas; Demetrios Xenides; Theodore E. Simos 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 163 KB

## Abstract A test set of 10 molecules (open and ring forms of ozone and sulfur dioxide as well as water and hydrogen sulfide and their respective fluoro‐ and chloro‐substituted analogs) of specific atmospheric interest has been formed as to assess the performance of various density functional theo