Faculty of Design and Technologies of Furniture and Interior

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Author: search.filters.author.Gruevski GjorgiHas files: No

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    Item type:Publication,
    EXAMINATION OF THE COMFORT WHILE LYING ON A METTRESS WITH A SOFT POLYURETHANE FOAM CORE
    (Faculty of Design and Technologies of Furniture and Interior-Skopje, 2015)
    Mihajlovski Nikola
    ;
    Gruevski Gjorgi
    ;
    Konstantin Bahchevandjiev
    The paper presents the results of the examination of the comfort while lying on a mattress with a soft polyurethane foams core. The areas of standing close by measurements with measurement of the multi- sensory appropriate cover and computer software were studied. For an indicator of comfort is taken the comfort index, according which within the limits of average height and weight of the group of users, the measurements match the recommended method of tabular values. The cases where the users are with low body weight and greater height, and users with greater body weight and short stature, deviate from the recommended method of tabular selection. The measurement with multi sensory measuring cover is recommended as yet most realistic method for determining the comfort when lying on a mattress.
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    Item type:Publication,
    Metrology of the geometric characteristics of mortise and tenon joints through Geometrical product specification (GPS) standards
    (Faculty of Design and Technologies of Furniture and Interior-Skopje, 2013)
    Mihajlovski Nikola
    ;
    Gruevski Gjorgi
    The mutual interaction of the contact surfaces of the mortise and tenon joints is complex. The geometry of the joint affects the tribology of these surfaces. The optimal shape of mortise and tenon joints is also represented by their geometric features. The Geometrical Product Specification System (GPS) is a set of guidelines, concepts, and symbols that establish the geometry of a part's allowable tolerances to guarantee its functionality. This review paper presents an investigation of the possibilities for metrology of the geometrical characteristics of mortise and tenon joints and their expression and representation through Geometrical Product Specification (GPS) standards. For this purpose, the metrology of the most commonly used joint in wood chair construction is presented. The following types of tolerances are presented: dimension tolerances (length, width and thickness); form tolerances (straightness and flatness); orientation tolerances (parallelism and perpendicularity) and location tolerances (symmetry). Metrology and presentation of the geometric characteristics of mortise and tenon joints through GPS standards is a useful method that satisfies functional requirements and quality control during processing. The phases and operations of measuring the geometric characteristics of the joints using manual instruments are presented.