TERMIUM Plus®

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ULTRASONIC IMPEDANCE PLANE SEAM TESTING TECHNIQUE [1 record]

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Record 1 2001-05-07

English

Subject field(s)
  • Strength of Materials
  • Engineering Tests and Reliability
  • Joints and Connections (Construction)
CONT

Seam Testing Methods... There are number of procedures available which have applicability on different geomembranes ... the ultrasonic impedance plane method works on the principle of acoustic impedance. A continuous wave of 160 to 185 kHz is sent through the seamed liner and a characteristic dot pattern is displayed on a CRT screen. Calibration of the dot pattern is required to signify a good seam; otherwise, it is not. The method has potential for all types of geomembranes but still needs additional development work.

French

Domaine(s)
  • Résistance des matériaux
  • Fiabilité, contrôle et essais (Ingénierie)
  • Joints et assemblages (Construction)

Spanish

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