Abstract: The method for obtaining an image of a part to be inspected includes the steps of determining, by simulation, the ultrasonic field (s0) generated by the propagation of a wave in a flawless reference part; transmitting an ultrasonic wave toward the part to be inspected; measuring the field (um) returned by the part to be inspected; subtracting from the field (um) returned by the part to be inspected an ultrasonic field (u0) obtained from a previous corresponding measurement on the reference part; calculating a variable related to the topological energy (ET) in the reference part on the basis of the field (s0) determined by simulation and of the field (um?u0) obtained by subtraction; and determining the image of the part to be inspected on the basis of the values for this variable.

Abstract: The method for obtaining an image of a part (10) to be inspected includes the steps consisting in determining, by simulation, the ultrasonic field (s0) generated by the propagation of a wave in a flawless reference part (9); transmitting an ultrasonic wave toward the part to be inspected; measuring the field (um) returned by the part (10) to be inspected; subtracting from the field (um) returned by the part to be inspected an ultrasonic field (u0) obtained from a previous corresponding measurement on the reference part (9); calculating a variable related to the topological energy (ET) in the reference part (9) on the basis of the field (s0) determined by simulation and of the field (um?u0) obtained by subtraction; and determining the image of the part (10) to be inspected on the basis of the values assumed by this variable.

Abstract: The invention relates to a wood-treatment method comprising in situ polymerisation under electromagnetic radiation. The inventive method comprises the following steps, namely: a first step consisting in impregnating a piece of wood with organic monomers that are selected from among (A) drying oils and/or (B) at least one first reactant comprising at least two glycidyl functions and at least one second reactant comprising at least two primary amine or secondary amine —NH functions, the average functionality of all of the first and second reactants being strictly greater than 2; and a second step consisting in exposing the wood thus impregnated to electromagnetic radiation having a wavelength (?) of between 1 and 10?3 metres over a total time of between 5 and 40 seconds and with a power of between 300 and 1000 Watts.