e-ISSN 2231-8542
ISSN 1511-3701

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Mechanical Analysis of a Wedge Device in Sawing Technology

Mohd Salahuddin Mohd Basri, Mohd Zuhair Mohd Nor and Rosnah Shamsudin

Pertanika Journal of Tropical Agricultural Science, Volume 27, Issue S1, December 2019

Keywords: Deformation, fatigue analysis, oil palm stems, polygon sawing pattern, sawmill carriage, stress, wedge

Published on: 21 June 2019

The oil palm trunk (OPT) currently represents a massive volume of agricultural waste with great potential to be rapidly developed in the wood composite industry. An improvement in sawing technology has potential to improve the yield of the commercially hard outer core of the OPT by about 27 % thus replacing the present sub-optimal square sawing pattern with a more efficient and higher-yielding polygon sawing pattern. To achieve this, a 'wedge' device was designed to be mounted on the existing sawing carriage. The proper methodology was followed including extraction of the design layout of the machine, development of the schematic drawing and wireframe model, modification of the design in computer-aided design (CAD) environment, the performance of stress, total deformation, and fatigue analysis, and production of a complete drawing for fabrication purpose. Results from the analysis showed that the designed part was safe to be fabricated with a small maximum equivalent stress of 2.546 MPa, maximum total deformation of 0.007935 mm and total life cycle of one million cycles. These evaluation results indicate that the material used for the wedge device (including the base part) satisfies the design requirements of static strength and is safe within its designed fatigue life.

ISSN 1511-3701

e-ISSN 2231-8542

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