geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Effect of grain angle on shear strength of glued end grain to flat grain joints of defect-free softwood timber


, : Effect of grain angle on shear strength of glued end grain to flat grain joints of defect-free softwood timber. Wood science and technology 41(6): 501-509

To evaluate the effect of grain orientation on the adhesive bond strength, three-layered Norway spruce wood specimens were tested in shear. The two axial-oriented outer layers were jointed with the middle layer using three typical glues for load bearing constructions, i.e. one-component polyurethane (PUR), melamine-urea-formaldehyde (MUF) and phenol-resorcinol-formaldehyde (PRF). The grain orientation of the middle layers was varied from 0p (parallel to grain of the surface layer) to 90p (perpendicular to grain of the surface layer) in incremental steps of 10p. Samples with middle layers oriented parallel to the outer layers showed shear values in the range of solid spruce wood. Decreased shear strength values were expected for increased grain angles of the middle layer. However, no explicit tendency was observed for the shear strength in dependence of the grain direction. In general, MUF-bonded samples showed slightly higher shear strength values compared with PUR- and PRF-bonded specimens.

US$19.90

DOI: 10.1007/s00226-007-0136-7


Other references

Royer, Jeffrey S.Reviewer, 2001: Economics of strategy (book review). Agribusiness 17(1 Winter 2001): 3-5

Prokazina, T.P., 1959: New data on the seed weight of forest trees and shrubs.. The mean weights are tabulated for 37 species, and the maximum and minimum weights for 13 of them are shown, together with the seed sources.

Frazier-Bowers, S.A.; Simmons, D.; Wright, J.Timothy.; Proffit, W.R.; Ackerman, J.L., 2010: Primary failure of eruption and PTH1R: the importance of a genetic diagnosis for orthodontic treatment planning. Primary failure of eruption (PFE) is characterized by nonsyndromic eruption failure of permanent teeth in the absence of mechanical obstruction. Recent studies support that this dental phenotype is inherited and that mutations in PTH1R genes expla...

Crago, A.M.; Azu, M.; Tierney, S.; Morrow, M., 2010: Randomized clinical trials in breast cancer. Breast cancer remains the most common cancer diagnosed in women and the second leading cause of cancer-related deaths in this group. Significant advances in the treatment of breast cancer and in the ability to screen for the disease mean that it i...

Thenius Erich, 1949: Martes gamlitzensis H. v. Meyer; beitraege zur Kenntnis der Saeugetierreste des steirischen Tertiaers, III. Continuation of a study of remains of mammals from Tertiary deposits of Styria, Austria. Teeth from middle Miocene lignite of the Gamlitz region, previously assigned to Mustela gamlitzensis, are redescribed and reassigned to Martes gamlitzensis.

Dolgov, VA., 1974: Diagnosis of Crocidura suavolens and C. leucodon (Insectivora, Soricidae). Zoologicheskii Zh, 536: 912-918

Pratt, T.; Mason, J.O.; Price, D.J., 2001: Pax6 and the development of thalamocortical projections. The transcription factor Pax6 is widely expressed throughout the developing nervous system including in the dorsal thalamus. These cells produce thalamocortical axons which navigate through the ventral thalamus, ventral telencephalon and reach the...

Reilly, J.J.; Parkes, E.D.; Ferguson, I.S., 1975: The potential productivity of farmlands in the lower south coast region of New South Wales for Radiata Pine plantations. From a general survey of farmlands in 1973 it is concluded that plantations of Pinus radiata would be technically practicable on most of the farmlands, and the most productive areas (totalling more than 70,000 ha.) would be those that are now rega...

Kocherga V.I.; Opentanova I.L.; Belik Y.V.; Miroshnikov A.I.; Aianyan A.E., 1981: Effect of phospho lipases a 2 from bee apis mellifica and central asian cobra naja naja oxiana venoms on the choline uptake by synaptosomes. Biochemistry (Moscow) 46(9 PART 1): 1228-1232

Babcock, K.; Bornstein, C.; D.A.gelis, G.; Hughes, M.; Neville, H.; Pearson, G.; Roy, M.; Schindel, T.; Taylor, M., 2012: Research Grants from the CSHP Research and Education Foundation. Canadian Journal of Hospital Pharmacy 65(2): 152-152