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Effects of pilot hole diameter and depth on screw driving torques in plywood     
Yazarlar
Doç. Dr. Önder TOR
Kastamonu Üniversitesi, Türkiye
Doç. Dr. Emre BİRİNCİ
Kastamonu Üniversitesi, Türkiye
Lingling Hu
Chen Chen
Türkiye
Özet
Factors affecting screw driving torques in plywood were investigated in this work. The factors were number of layers (7 and 9), pilot hole diameter (3.0 and 3.5 mm), pilot hole depth (60 and 80% of the thickness of specimen), and thickness of the metal plate (7.5 and 10 mm). Screw driving torques were studied in oriented strandboard, medium-density fiberboard, particleboard, and some wood-plastic composites. There is no such information about screw driving torques in plywood (PW). Therefore, this study focused on the plywood made of aspen (Populus tremula L.). The mean seating torque (SET) values ranged from 0.31 to 0.69 N∙m, whereas mean stripping torque (STT) values ranged from 0.50 to 4.7 N∙m. The ratios of STT/SET were between 2 and 5 in PW with seven layers, whereas the ratios were between 4 and 7 in PW with nine layers. The results indicated that the four main effects of SET and STT were statistically significant with p-values of ˂ 0.0001.
Anahtar Kelimeler
Screw,Face orientation,Seating torque,Stripping torque
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı BioResources
Dergi ISSN 1930-2126
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili Türkçe
Basım Tarihi 01-2020
Cilt No 15
Sayı 4
Sayfalar 8121 / 8132
Doi Numarası 10.15376/biores.15.4.8121-8132
Makale Linki http://dx.doi.org/10.15376/biores.15.4.8121-8132