Method for measuring tension state of a material and uses thereof
AssigneeInstitut National de la Recherche Agronomique (INRA)
InventorsPhilippe Pourcelot, Nathalie Crevier-Denoix, Berangere Ravary
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Abstract
A method for determining the state of tension of a material at a given time, including the step of calculating the value of at least one parameter extracted from the ultrasonic signal received after propagation of an ultrasonic wave emitted in the material between an ultrasound source and at least an ultrasound emitter located at a fixed distance from the source, the value of the at least one parameter varying with the state of tension of the material, the variation of the at least one parameter being proportional or inversely proportional to the variation of the state of tension of the material.
Claims22
A method for determining the tension condition of a material at a given time, comprising the steps of:
- (a) propagating an ultrasonic wave transmitted in a material between an ultrasound source and at least one ultrasound receiver situated at a fixed predetermined distance from the ultrasound source, wherein the material is under a tension condition;
- and
- (b) after propagation of the ultrasonic wave, extracting at least one parameter from the ultrasonic wave and calculating its value, wherein the value of the at least one parameter varies with the tension condition of the material, said variation of the at least one parameter being directly proportional or inversely proportional to the variation in the tension condition of said material.
Dependencies are inferred from the claim text.