Nondestructive Techniques for Determination of Wood Mechanical Properties of Urban Trees in Madrid

The aim of this paper is to analyze the mechanical properties Robinia pseudoacacia L. (black locust), Platanus × hybrida Brot. (London plane), Ulmus pumila (Siberian elm), and Populus alba (white poplar), estimated using ultrasound wave equipment (USLab y Sylvatest Duo) impact (Microsecond Timer) on standing trees, felled logs specimens obtained from different parts trees. Bending strength, axial compression strength tension parallel grain were determined for each specimen, in order subsequently correlate stiffness with acoustic tree. For relationship between static modulus elasticity dynamic trees USLab, coefficients determination found be 0.30–0.92, 0.52 0.80 Duo 0.60 0.94 Microsecond Timer. It would necessary determine whether removal bark correct coupling ultrasonic sensors provide an entry route pests or diseases that could affect health