Kastamonu University DSpace Açıkerişim Platformu

Aim of study: The aim of this study was to investigate the effect of countersink along with some other factors affecting screw driving torques in joints made of medium density fiberboard (MDF). There is limitedresearch has been done in the field of screw driving torques in wood based composites. In all of these studies, the specimen consisted of a single wood-based composite material and metal plate which was used for the consistency of the screw driving data. However, in this study, the screw driving torques were obtained by the specimens consisted of two MDF testing blocks jointed by a screw.Material and Method: In general, there were two main screw driving torques; seating torque (SET) and stripping torque (STT). The MDF testing blocks had dimension of 150 mm long × 75 mm wide and two different thicknesses were used. For upper testing block, 8-mm-thick MDF and for lower testing block, 18- mm-thick MDF were used. Torques measurements were obtained by an adjustable torque screwdriver. Factors were embedded screw orientation (face-to-face and face-to-side), pilot-hole diameter (2.5 and 3.0mm), pilot-hole depth (12 and 16 mm) and countersink type (with and without countersink).Main results: The results of statistical analysis indicated that the four-way interaction among the embedded screw orientation, screw length, countersink type and pilot-hole diameter was significant on the mean SET and STT in the MDF joints.Highlights: This study will help MDF manufacturers to understand the screw performance of their products in terms of screw driving torques

Web of Science

Effects of Driving Torques on Direct Screw Withdrawal Resistance in OSB

(2016.01.01) Tor, O; Demirel, S; Hu, LL; Zhang, JL

Web of Science

Effects of Exposure Time and Temperature on Screw Driving Torques in Heat-Treated Anatolian Black Pine and Sessile Oak Wood

(2022.01.01) Karamanoglu, M; Tor, O

Web of Science

EFFECTS OF FACTORS ON DIRECT SCREW WITHDRAWAL RESISTANCE IN MEDIUM DENSITY FIBERBOARD AND PARTICLE-BOARD

(2020.01.01) Yorur, H; Birinci, E; Gunay, MN; Tor, O

Web of Science

Effects of Pilot Hole Diameter and Depth on Screw Driving Torques in Plywood

(2020.01.01) Tor, O; Birinci, E; Hu, LL; Chen, C

Publication

Effects of pilot hole diameter on screw-driving torques in medium density fiberboard

(2019-01-01) Tor O.; Tor, O

This study investigated the effects of pilot-hole diameter in medium density fiberboard (MDF) on the characterization of screw-driving torques. The factors investigated were the embedded screw orientation and pilot hole diameter. Based on the curves obtained from screw-driving process, the measurements of the seating torque (SET) and stripping torque (STT) were obtained. The results of statistical analysis indicated that the SET and STT values in MDF were significantly affected by the pilot hole diameter. In the case of driving screws into the side of MDF material, the mean SET ranged from 0.37 to 1.23 N·m and STT values ranged from 1.18 to 2.68 N·m whereas for the face specimens, the mean SET ranged from 0.57 to 1.56 N·m and STT values ranged from 2.89 to 5.41 N·m.

Web of Science

EFFECTS OF PILOT HOLE DIAMETER ON SCREW-DRIVING TORQUES IN MEDIUM DENSITY FIBERBOARD

(2019.01.01) Tor, O

Web of Science

Ergonomics of a Chinese Folk Bamboo Lounge Chair

(2020.01.01) Cheng, YF; Tor, O; Hu, LL; Zheng, W; Yu, YM

Web of Science

Factors Affecting Critical Screw-Driving Torques in Particleboard

(2019.01.01) Tor, O; Yu, XH; Demirel, S; Hu, LL; Zhang, JL

Web of Science

Finite Element Analysis of Compressive Stress-Strain Relations in Elastic Materials for Seat Foundation

(2023.01.01) Li, WK; Yu, XH; Hu, XY; Tor, O; Zhang, JL; Zhang, T; Qi, W; Hu, LL

Elastic materials for seat foundations come in a variety of materials, shapes, and dimensions. However, it is difficult to measure the stress -strain relationships of many elastic material combinations by conventional uniaxial compression tests. This study investigated the stress-strain relations of elastic material combinations for foam foundations using finite element analysis (FEA). First, the stress-strain relations of single-layer polymer foams and a combination of double-layer polymer foams with covering were quantified by uniaxial compression tests, and axial tensile tests quantified the properties of the covering material of the fabric. Then, based on the Ogden foam and Ogden constitutive equation of Ansys Workbench 19.2, the test data of single-layer polymer foams and covering were fitted by a non-linear least square method, and a combination of double-layer polymer foams with the covering is predicted by FEA. When the strain was 10% to 65%, the stress error between FEA and test results dropped from 95.68% to-5.08%.

Web of Science

IN-PLANE BENDING MOMENT RESISTANCE OF T-SHAPED ONE-SIDED TWO-GUSSET-PLATE FURNITURE JOINTS IN ORIENTED STRANDBOARD

(2016.01.01) Demirel, S; Yu, XH; Tor, O; Zhang, JL

Web of Science

LATERAL LOADS OF STAPLED-GLUED SURFACE-TO-SURFACE JOINTS IN ORIENTED STRANDBOARD FOR FURNITURE

(2018.01.01) Demirel, S; Tor, O; Yu, XH; Zhang, JL

Web of Science

Some Properties of White and Torrefied Pellets Obtained from Oil Palm Trunk as Raw Material

(2022.01.01) Chotikhun, A; Kittijaruwattana, J; Pianroj, Y; Tor, O; Birinci, E; Hengniran, P; Lee, SH

Web of Science

Static Lateral Load Capacity of Extruded Wood-plastic Composite-to-metal Single-bolt Connections, Considering Failure at the Ends

(2019.01.01) Chen, C; Kuang, FC; Tor, O; Quin, F; Xiong, ZW; Zhang, JL

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