Nondestructive detection of reinforcing member degradation

Details Nondestructive detection of reinforcing member degradation Nondestructive detection of reinforcing member degradation

G - Physics

01

N

G01N 29/12 (2006.01) G01M 7/02 (2006.01) G01N 29/04 (2006.01) G01N 29/11 (2006.01) G01N 29/24 (2006.01)

Patent

CA 2404102

A nondestructive method of and apparatus for detecting degradation of reinforcing members embedded within a structure is disclosed. Degradation can arise from many sources, such as corrosion, fracture, cracking, fatigue, chemical reaction, etc. The device includes an inducing instrument(210) to induce a vibration of the reinforcing members (110)and a measuring device (220) to detect the vibration of the reinforcing members. The measurement is analyzed to detect the presence of reinforcing member degradation or reinforcing member-to-concrete bonding. The device may include a controller (230) to enhance the detection. The device may also include an amplifier (240) to further increase the energy in the waves imparted to the structure and the acoustic waves detected by the measuring instrument.(220)

L'invention concerne un procédé et un dispositif, non destructifs, de détection de la dégradation d'éléments renforçateurs encastrés dans une structure, cette dégradation pouvant être provoquée par plusieurs facteurs tels que la corrosion, des cassures, fractures, l'usure, les réactions chimiques, etc.. Ce dispositif comprend un instrument inducteur, destiné à induire la vibration des éléments renforçateurs, ainsi qu'un instrument de mesure, destiné à détecter la vibration desdits éléments. La mesure est alors analysée aux fins de détection d'une dégradation des éléments renforçateurs ou de la présence d'une liaison entre ces éléments et le béton. Le dispositif de l'invention peut comporter un module de commande, aux fins d'amélioration de la détection, et il peut encore comporter un amplificateur destiné à accroître davantage l'énergie des ondes communiquées à la structure et celle des ondes acoustiques détectées par l'instrument de mesure.

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