Estimation of Stress Corrosion Cracking Initiation and Propagation in High-Pressure, High-Temperature Water Environment Utilizing Acoustic Emission

• Matsuo Takuma

  School of Science and Technology, Meiji University

• Sano Keita

  School of Science and Technology, Meiji University

• Sakakibara Yohei

  IHI Corporation

• Nakayama Gen

  IHI Corporation

抄録

The stress corrosion cracking (SCC) of type 304 stainless steel during a creviced bent beam (CBB) test in a high-temperature, high-pressure water environment was monitored by an optical fiber acoustic emission (AE) sensor. By examining the number and type of cracks formed by different durations of CBB testing an SCC initiation and propagation behavior model was developed. This model was then used to examine the AE event rate, which was found to agree well with the observed changes in the number and size of the cracks formed. Through analysis of the relationship between crack size and AE, the weaker AE signals were assumed to be produced by the initiation of small cracks, whereas the coalescence of cracks produces moderate and large AE signals. On the basis of these findings, it is concluded that the SCC propagation behavior can be reliably estimated from the event rate and amplitude of AE signals.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 56 (3), 327-332, 2015

  公益社団法人 日本金属学会

キーワード

• stress corrosion cracking
• acoustic emission
• optical fiber sensor
• high temperature
• guided wave

詳細情報

• CRID: 1390001204253646208
• NII論文ID: 130004825283
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.m2014357
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 026220351
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026220351
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/56/3/56_M2014357/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可