Areas of research interest

1) Strength, Fracture of Welded Structures and Integrity Assessment technology; 2) FEM Analysis of Welding Stress and Deformation; 3) Fatigue Analysis and Life Extension Technology of Welded Structures; 4) Failure Analysis of Engineering Structures

Teaching

1) Safety Assessment Methods for Welded Structures; 2) Material Processing Structural Design

Honors and awards

According to International standards BS7448, the key technique of CTOD test of welded joint was achieved and the application in dozens of Marine Project have avoid PWHT successlly.  Invited by State Committee for Standardization, Tianjin University was the first unit in charge of drafting the State standard "Test Method of Quasi-static fracture toughness for metal welded joints".

Developed autonomously a safety assessment software based on British Standard BS7910. This software can assess the safty of the oceaneering structures laying and in-service which reducing repair costs and provide the basis for the safe use. For the first time at home and abroad proposed a new concept of spraying modification to solve the fatigue life extension problem of the welded structure under high stress.

Research projects

1) Modification of spray fusing to improve the fatigue strength of welded joint,National Natural Science Foundation of China.

2) Failure analysis of broken bolt in Sea pipe insulation flange,China National Offshore Oil Corporation

3) Failure analysis of broken bolt in Sea pipe insulation flange,TianjinYuanjie Offshore Engineering Co. Ltd.

4) CTOD testing to avoiding PWHT of high pressure large diameter girth welded ball valve,Dalian dagao valve Co. Ltd/Raymond (Beijing) Valve Manufacturing Co., Ltd.

5) CTOD test of welded joints avoiding PWHT,Yiu Lian Dockyards(Shekou) Limited/BÖ

hler Welding Trading(Shanghai)CO., Ltd.

6) Safety assessment of girth welded in ball valve,Shanghai Neles-Jamesbury Valve Co.Ltd/China Boteli Valve Group Co.Ltd/Dalian dagao valve Co. Ltd.

7) Fatigue strength test of Ti alloy welded joint,Beijing Aeronautical Manufacturing Technology Research Institute.

Selected publications(Journal articles, patents and books)

More than 20 articles and 2 books were published.9 National Invention Patent applications and 2 Patents.

Books:

1. The Chapters of "Fracture and Safety Assessment of Welding Structure" and "Fatigue and Life of Welding Structure" in volume "Materials Welding Engineering" of China Materials Engineering Dictionary, Chemical Industry Press, 2006

2. Part of "Fracture and Safety Assessment of Welding Structure" in volume "Welding Structure" of Welding Manual Third Edition, Machinery Industry Press, 2007

Articles:

1. Analysis on leak-before-break safety assessment of pressurized pipes. Transactions of the China Welding Institution,2008,29(4):2528(EI:082311303370)

2. Modification of spray fusing to improve the fatigue strength of welded joint. Journal of Tianjin University Science and Technolog,2008,41(3):377381(EI:082011256424)

3. Application of SINTAP to the safety assessment of X65 pipeline steel.Chinese Journal of Mechanical Engineering, 2005, 18(3): 386389(EI:05439438624)

4. J-Resistance curves of welded joints for X56 pipeline steel.Transactions of the China Welding Institution,2005,26(3 ):4144(EI:05199092738)

5. Safe assessment and life prediction of weld in offshore pipeline.Journal of Tianjin University Science and Technolog,2004,37(2):121125(EI:04258227339)

6. Safe assessment for welded joint of offshore pipeline.Transactions of the China Welding Institution,2004,25(6):2730(EI:05209109450)

7. CTOD fracture toughness of welded joints of X65 pipeline steel.Transactions of the China Welding Institution,2003,24(3):1316(EI:03407659612)

8. Engineering critical assessment used for welded pipeline based on BS 7910. Transactions of the China Welding Institution, 2006,27(1):1720+25  (EI:06179840072)

9. Discussion on determination of J-integral and comparison of different test standards. Transactions of the China Welding Institution,2006,27(10):2325+32(EI:071210503337)

10. Application of Charpy impact absorbed energy to the safety assessment of offshore pipeline.China Mechanical Engineering,2005,16(3 ):230233 (EI:05108876269)

• 1) Strength, Fracture of Welded Structures and Integrity Assessment technology;2) FEM Analysis of Welding Stress and Deformation;3) Fatigue Analysis and Life Extension Technology of Welded Structure

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