THE IMAGE PROCESSING METHOD IN ORTHOTROPIC MATERIAL EVALUATION

KNOWING THE ELASTIC CONSTANTS IS THE BASIC REQUIREMENT TO OBTAIN USABLE RESULTS IN ENGINEERING PRACTICE WITH THE CONDITION OF SOLVING BASIC EQUATIONS OF ELASTICITY OF THE WOOD MATERIAL, TAKING INTO ACCOUNT ALSO ITS BOUNDARY CONDITIONS. IN THIS PAPER A NON -DESTRUCTIVE INVESTIGATION METHOD IS PROPOSED TO DETERMINE THE MECHANICAL CHARACTERISTICS OF THE WOOD: THE LONGITUDINAL MODULUS OF ELASTICITY ON THE APPLIED LOAD DIRECTION AND POISSON COEFFICIENTS FOR THE TWO TRANSVERSE DIRECTIONS. THE MAIN OBJECTIVE WAS TO ACHIEVE A TEST BED FOR OBTAINING SPECIMENS SUBJECTED TO COMPRESSIVE DEFORMATION AND CREATING AN IMAGE PROCESSING PROGRAM TO MEASURE THESE DEFORMATIONS. BASED ON DIGITAL IMAGE ANALYSIS THE SOFTWARE OFFERS NOT ONLY THE DEVELOPED DISPLACEMENT FIELDS, BUT ALSO THE FIELDS OF THE CORRESPONDING STRAINS.

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