β Scribed by Valentina Vlasie Belloncle; Martine Rousseau; Nicolas Terrien
No coin nor oath required. For personal study only.
This paper is concerned with the ultrasonic characterization of the adhesion in a structural bond subjected to various surface pretreatments. The aim is: (a) to know if the non destructive evaluation allows to distinguish three types of pretreatments and (b) to optimize the procedure (e.g. time of steeping, concentration of the solution, temperature) for a given surface treatment in order to obtain a better durability of structural joints. This distinction is based on the measurement of the cutoff-frequencies of the guided waves. The comparison with two rheological models leads to a classification of the pretreatments according to their effectiveness.
π SIMILAR VOLUMES
The authors have employed the ultrasonic resonance method to study the properties of an adhesive-bonded joint between two metallic sheets. The responses of the transducer swept in the vicinity of resonance, when coupled to the joint, show significant variation as the composition of the adhesive laye