The effect of pitch of thread on the force retaining screws in particleboard
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2016, Vol 96, Issue 1
Abstract
The effect of pitch of thread on the force retaining screws in particleboard. The paper presents testing results of the force retaining screws in particleboards. A research hypothesis was proposed that the pitch of thread within the range of 2.5, through 3 to 3.5 mm affects the value of the screw retaining force. Screws with three different pitches of thread were tested when mounted in the wide and narrow plane of the panel. Samples were made according to the guidelines of the ISO Standard 27528:2009. Tests were conducted using a universal strength testing machine. The research hypothesis was not confirmed in these tests. Keywords:
Authors and Affiliations
MACIEJ SYDOR, MARCIN WOŁPIUK
Influence of temperature on the bending capacity of timber beams strengthened with CFRP laminate
Influence of temperature on the bending capacity of timber beams strengthened with CFRP laminate. Nowadays external bonding of high strength fiber laminates is very popular method of enhancing the load capacities of exis...
Fire resistance tests of loadbearing walls of timber framework with linings of gypsum plasterboards
Fire resistance tests of loadbearing walls of timber framework with linings of gypsum plasterboards. The results of two fire resistance tests of the loadbearing walls with timber framework with linings of gypsum plasterb...
Ignition temperature of gas combustion products of selected wood materials
"Ignition temperaturę of gas combustion products of selected wood materials". The scope of the paper included experimental studies on the determination of ignition temperature of the gaseous products of combustion of som...
Share of by-products in the output of medium-size sawmills
Share of by-products in the output of medium-size sawmills. Wood processing in sawmills involves segregation of by-products. The share of individual groups of these products and their form depend on the volume of product...
Chemical properties, density and alkalinity of the black liquor obtained from kraft pulping of a selected fast growing poplar line and of reference species
Chemical properties, density and alkalinity of the black liquor obtained from kraft pulping of a selected fast growing poplar line and of reference species. Attempts were made to determine the contents of selected chemic...