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1.1 This practice provides a guide for the use of waves generated using magnetostrictive transduction technology for guided wave testing (GWT) welded tubulars. Magnetostrictive materials transduce or convert time varying magnetic fields into mechanical energy. As a magnetostrictive material is magnetized, it strains. Conversely, if an external force produces a strain in a magnetostrictive material, the material's magnetic state will change. This bi-directional coupling between the magnetic and mechanical states of a magnetostrictive material provides a transduction capability that can be used for both actuation and sensing devices.
Standard Practice for the Measurement of the Apparent Attenuation of Longitudinal Ultrasonic Waves b..
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Standard Practice for Measuring Life-Cycle Costs of Buildings and Building Systems..
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ASTM Book of Standards Volume 4.09: Construction: Soil and Rock (II)..
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Standard Test Method for Cloud Point of Nonionic Surfactants..
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