Effects of Driving Torques on Direct Screw Withdrawal Resistance in OSB

Tor, Önder; Demirel, Samet; Hu, Lingling; Zhang, Jilei

doi:10.17475/kastorman.289754

Cited by 8 publications

(7 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The juniper OSB panels showed comparable or higher results for the screw withdrawal resistance, especially for the Sap and Slabs-W panels, which had significantly higher peak loads for the edge screw withdrawal resistance. The screw withdrawal with pilot hole 2.4mm and torque level 1.5 Nm for southern yellow pine OSB in the research of Tor et al (2016) was 1859N, 1477N, and 2469N for edge-grain, end-grain, and face-grain respectively.…”

Section: Resultsmentioning

confidence: 91%

Properties of the western juniper (Juniperus occidentalis) strandboard

Pipíška

Leavengood

Kamke

et al. 2021

BioRes

View full text Add to dashboard Cite

This work investigated the feasibility of using western juniper (Juniperus occidentalis) as a material to manufacture oriented strandboard (OSB) panels. Four different material combinations of juniper sapwood, heartwood, and fibrous bark were compared with regular southern yellow pine (Pinus sp.) strands. The OSB panels were made at an oven-dry density of 560 kg/m3. One pine control panel was also made at a higher density of 650 kg/m3 with a 5% addition of phenol formaldehyde (PF) resin and a 0.5% addition of wax. The single-layer panels were formed with a hot press, and the physical and mechanical properties were tested according to the ASTM standard D1037 (2020). The testing indicated that western juniper is a potential material for manufacturing of OSB panels. The properties of the juniper panels were equivalent or slightly better than those of the southern yellow pine panels at the same density level, except for the modulus of elasticity (MOE). The lower density of the juniper OSB panels may have benefits in construction applications and can decrease transportation costs.

show abstract

Section: Resultsmentioning

confidence: 91%

Properties of the western juniper (Juniperus occidentalis) strandboard

Pipíška

Leavengood

Kamke

et al. 2021

BioRes

View full text Add to dashboard Cite

show abstract

“…However, opposing behavior was seen between two variables by hardener utilization and should be evaluated by a future study. Because as Tor et al (2016) reported, the structural unity of a product is directly correlated to the connection ability or performance of the members. And, SHR is one of the performance indicators that is adversely affected by soaking to water (Yorur et al 2020).…”

Section: Resultsmentioning

confidence: 98%

Sertleştiricinin orta yoğunluklu lif levhanın bazı fiziksel ve mekanik özelliklerine etkisi

Çamlibel

Aydın

2022

Turkish Journal of Forestry | Türkiye Ormancılık Dergisi

View full text Add to dashboard Cite

Effects of Ammonium chloride (NH4CI) as a hardening agent on thickness swelling (TS), water absorption (WA), screw holding resistance (SHR), Janka hardness, modulus of rupture (MOR), modulus of elasticity (MOE), and internal bonding (IB) properties of medium-density fiberboard (MDF) were evaluated. Target densities were 712 and 715 kg/m³ for hardener applied (0.75 kg/m³ solid as 10% solution (fiber dry wt.)) and unmodified factory made 18 mm thick MDF, respectively. A total of 400 samples were tested. Boards produced without hardener presented better mechanical properties except for SHR. Indeed, SHR was around 9.2% improved by hardener utilization. However, hardener utilization caused around 8.4%, 7.3%, 3.6%, and 1.3% decreases for MOE, MOR, IB, and Janka hardness, respectively. Surprisingly, soaking time caused opposite results for TS and WA. The TS and WA of the hardener utilized MDF decreased around 40.3% and 29.6% for short-term soaking (2h) but remarkable increases (around 62.4% and 20%, respectively) were observed for long-term (24h) soaking. Statistical analysis proved that there were statistically significant (P<0.05) differences between all the evaluated properties.

show abstract

“…An increasing trend can be observed in the SET for driving screws into the side of MDF when the pilot hole diameter increased from 0 to 3.2 mm while there was a decreasing trend when the pilot hole diameter increased from 3.2 to 4.4 mm. Tor (2011) found that the SET values for side MDF specimens were 0.38, 0.41, and 0.46 N•m when the pilot hole diameters of 1.6, 2.0, and 2.4 mm drilled whereas the STT values were 1.36, 1.49, and 1.64 N•m with the corresponding pilot hole diameters, respectively.…”

Section: Statistical Analysesmentioning

confidence: 92%