Title:
DETERIORATION DIAGNOSTIC DEVICE
Document Type and Number:
Japanese Patent JP2021162474
Kind Code:
A
Abstract:
To provide a deterioration diagnostic device capable of detecting deterioration of a high-pressure tank.SOLUTION: A deterioration diagnostic device 20 is a deterioration diagnostic device 20 of a high-pressure tank 50 that includes a liner 51 and a fiber-reinforced resin layer 52 that covers the outer surface of the liner 51 for diagnosing the deterioration of the high-pressure tank 50 when the inside of high-pressure tank 50 is repeatedly filled and released with gas. The deterioration diagnostic device 20 has an arithmetic logic unit including: a calculation unit 124 that calculates a cumulative value by accumulating the number of AE waves generated when cracks occur in high-pressure tank 50 when gas is repeatedly filled and released; and a determination unit 125 that determines the existence/absence of deterioration of the high-pressure tank 50 based on the cumulative value.SELECTED DRAWING: Figure 2
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Inventors:
HORI YOSHIHIRO
DOI KOKICHI
DOI KOKICHI
Application Number:
JP2020064414A
Publication Date:
October 11, 2021
Filing Date:
March 31, 2020
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F17C1/06; G01N29/14; F17C13/02; G01N29/46; H01M8/04; H01M8/04313; H01M8/04664
Attorney, Agent or Firm:
Hiraki International Patent Office