Title:
REMAINING LIFESPAN PREDICTION DEVICE, REMAINING LIFESPAN PREDICTION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/188477
Kind Code:
A1
Abstract:
In the present invention, a learning model is trained by using: creep rupture strength values and creep rupture times of a plurality of metal materials manufactured using the identical standard but different heats; and material condition data indicating conditions of the respective metal materials. An output value of the learning model is acquired by inputting, to the learning model, a prescribed length of time and material condition data for a metal material in current use that is a metal material of said standard. If the acquired output value is plugged in as a load stress to a predictive formula, and if a prescribed temperature that is determined in advance is plugged in to the predictive formula, the predictive formula is adjusted so that a creep rupture time calculated by the predictive formula will match the prescribed length of time. An actual temperature used and actual load stress are plugged in to the adjusted predictive formula to calculate the creep rupture time of the metal material in current use. An actual use time is subtracted from the calculated creep rupture time of the metal material in current use to calculate the remaining lifespan of the metal material in current use.
Inventors:
HASHIMOTO KEITA (JP)
SAITO NOBUHIKO (JP)
HONDA TAKASHI (JP)
NAKAMURA TADAAKI (JP)
SHIRANE TAKAHIRO (JP)
KOMAI NOBUYOSHI (JP)
TOMINAGA KIMIHIKO (JP)
SAITO NOBUHIKO (JP)
HONDA TAKASHI (JP)
NAKAMURA TADAAKI (JP)
SHIRANE TAKAHIRO (JP)
KOMAI NOBUYOSHI (JP)
TOMINAGA KIMIHIKO (JP)
Application Number:
PCT/JP2022/037852
Publication Date:
October 05, 2023
Filing Date:
October 11, 2022
Export Citation:
Assignee:
MITSUBISHI POWER LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
G01N17/00
Foreign References:
| JP2019178897A | 2019-10-17 | |||
| JP2022027670A | 2022-02-14 | |||
| JP2022036540A | 2022-03-08 | |||
| CN112651164A | 2021-04-13 |
Other References:
HONDA MASAKI, TAKASHI HONDA, TAISEI IKEMURA, MANABU KONDO: "Development of Maintenance Guideline for Dissimilar Metal Weld of Low-Alloy Steel Boiler Tube", MITSUBISHI HEAVY INDUSTRIES TECHNICAL REPORT, vol. 58, no. 3, 1 January 2021 (2021-01-01), pages 1 - 6, XP093094380
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
Download PDF: