Title:
鋼材破面の判別装置及び判別方法
Document Type and Number:
Japanese Patent JP7147802
Kind Code:
B2
Abstract:
To provide a discrimination device and discrimination method for a steel material fracture surface, capable of automatically discriminating a brittle fracture part and a ductile fracture part on a fracture surface of a steel material, and capable of being applied to a large test piece in addition to a small test.SOLUTION: A discrimination device 1 for a steel material fracture surface comprises: a 3D measuring device 2 that measures the shape of a fracture surface 11 of a steel material 10; and discrimination means 4 that acquires 3D point group data of the fracture surface shape measured by the 3D measuring device 2, extracts the shape data of a 2D cross section cut in a plane (XY plane) perpendicular to a crack propagation direction (Z direction) of the steel material 10 from the 3D point group data, and discriminates whether the range of a line segment is a brittle fracture part 11a or a ductile fracture part 11b based on an absolute value of inclination of a line segment (line segment 12, ..., line segment n-1n) between adjacent points (point 1 and point 2, ..., point n-1 and point n) in the extracted shape data of the 2D cross section and the absolute value of the difference in inclination of adjacent line segments (line segment 12 and line segment 23, line segment 23 and line segment 34, ..., line segment n-2n-1 and line segment n-1n).SELECTED DRAWING: Figure 1
Inventors:
Ryota Nagao
Hisakazu Tajika
Handa Permanent
Hisakazu Tajika
Handa Permanent
Application Number:
JP2020045435A
Publication Date:
October 05, 2022
Filing Date:
March 16, 2020
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
G01N3/08; G01B11/24; G01N3/06
Domestic Patent References:
| JP4042010A | ||||
| JP60143770A | ||||
| JP2019158423A |
Foreign References:
| US4864867 | ||||
| KR1020050063499A | ||||
| CN106442122A |
Other References:
黒田 敏雄 他,三次元立体画像構築システムの開発とステンレス鋼破面への適用,溶接学会論文集,2001年,第20巻,第1号,143~151頁
小池 宏侑 他,金属材料の破壊形態の定量化に関する研究,栃木県産業技術センター 研究報告,2015年,No.12,108~111頁
小池 宏侑 他,金属材料の破壊形態の定量化に関する研究,栃木県産業技術センター 研究報告,2015年,No.12,108~111頁
Attorney, Agent or Firm:
田中 秀▲てつ▼
Hirose Hajime
Miyasaka Tohru
Tetsuya Mori
Hirose Hajime
Miyasaka Tohru
Tetsuya Mori