Nondestructive inspection method of polymer insulator and appara

Details Nondestructive inspection method of polymer insulator and appara Nondestructive inspection method of polymer insulator and appara

1997-03-27

1998-09-29

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73799, 73801, 364508, G01N 2914

Patent

active

058147284

ABSTRACT:
A nondestructive inspection method of inspecting a securing defect of a polymer insulator having an FRP core, an outer cover portion arranged around the FRP core, and at least one metal member secured to at least one end of the FRP core, includes the steps of; measuring an acoustic emission signal generated when the metal member is secured to the FRP core by using compression dies; and determining whether or not the securing defect is generated on the basis of the acoustic emission signal in process. Moreover, the disclosed apparatus performs the nondestructive inspection method mentioned above.

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patent: 4089224 (1978-05-01), Scott et al.
patent: 4107981 (1978-08-01), Kanagawa et al.
patent: 4494408 (1985-01-01), DeLacy
patent: 4565964 (1986-01-01), Matthews et al.
patent: 5453291 (1995-09-01), Sasahara et al.

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