Title:
HOSE DEGRADATION DIAGNOSIS METHOD AND HOSE DEGRADATION DIAGNOSIS DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/045695
Kind Code:
A1
Abstract:
Provided is a method that can diagnose the degradation of a hose during in-service operation. Of a resin hose (21) through the inside of which a cooling liquid is flowing at a predetermined pressure, the outer surface hardness (Hm), the hose outer surface temperature (Tm), and the inner pressure (Pm) are measured. The hose outer surface hardness (Hm) is corrected to a corrected outer surface hardness (Hc) obtained at a predetermined outer surface temperature (T0) and inner pressure (P0). The corrected outer surface hardness (Hc) is applied to a degradation relationship representing the relationship between hose outer surface hardness and the use time at a baseline temperature, and the estimated use time of the hose is calculated. By means of the difference between the estimated use time and the use time limit of the hose, the degradation of the hose is diagnosed.
Inventors:
AOIKE SATORU (JP)
HONBO KYOKO (JP)
HANAWA TSUNEO (JP)
TERAO YOSHINORI (JP)
HONBO KYOKO (JP)
HANAWA TSUNEO (JP)
TERAO YOSHINORI (JP)
Application Number:
PCT/JP2013/069583
Publication Date:
March 27, 2014
Filing Date:
July 19, 2013
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G01N17/00; G01N3/40
Foreign References:
| JP2007263908A | 2007-10-11 | |||
| JPH02108940A | 1990-04-20 | |||
| JPH11160215A | 1999-06-18 | |||
| JPH0627010A | 1994-02-04 |
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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