Ultrasonic process and apparatus for monitoring and measuring the evolution with time of physico-chemical, biological or bacteriological phenomena

US4614115A · kind A · utility

Assignee

• Societe d'Etudes et de Recherches de l'Ecole Nationale Superieure d'Arts et Metiers (S.E.R.A.M) CNT FRX COD 07 · FR

Inventors

• Jean L. Pelletier · Paris, FR
• Michel Moreau · Chartres, FR
• Michel Bocquet · Issy-les-Moulineaux, FR

Key dates

• Filing date: Dec 7, 1984
• Grant date: Sep 30, 1986
• Expiry date: Dec 7, 2004

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2291/101
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Ultrasonic process and apparatus for monitoring and measuring the evolution with time of physico-chemical and biological phenomena. There is plunged into the medium or media (4) to be monitored a bar (3) into which ultrasound (2) is injected in order to collect secondary echoes (F2, F3) due to numerous reflections from the lateral surface of the bar (3) brought into contact with the medium (4), one of the secondary echoes (F2) is selected and the evolution with time of the amplitude of this echo is recorded, this representing the evolution of the medium being monitored, in particular the setting of concrete or the polymerization of a resin.