Authors: Lu, H.; Liu, X. S.; Yang, J. G.; Zhang, S. P.; Fang, H. Y.

Source: Science and Technology of Welding & Joining, Volume 13, Number 1, January 2008 , pp. 70-74(5)

Publisher: Maney Publishing

Abstract:

The acoustical theory is introduced. Ultrasonic stress measurement experimental installation is established, consisted of a variable angle transducer and an oscillograph with special higher digitiser board. Acoustoelastic coefficient of longitudinal critically refracted waves propagating in Q-235 steel is calibrated by the tensile testing machine. In the present paper are discussed the longitudinal stress and transverse stress on twin wire welded plate, and a comparison is made with the result of finite element method obtained by Marc Software. The present paper also discusses the longitudinal stress distributions of multilayer welded plate and longitudinal residual stress gradient of 2219 Al alloy is obtained in the ultrasonic travel time change expression formal. Instability acoustoelasticity effect in elastic region of welding residual stress field is discovered. The sources of measurement error are pointed out. In conclusion the potential of the ultrasonic method in different industrial cases is particularised.

Keywords: LCR WAVE; ULTRASONIC; RESIDUAL STRESS; INSTABILITY ACOUSTOELASTICITY EFFECT; VARIABLE ANGLE TRANSDUCER

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174329307X249405

Publication date: 2008-01-01

More about this publication?

• Now online only
  
  Authors wishing to cite fast track papers should give the journal name and the article DOI. This will enable reference linking via CrossRef and allow forward and backward citation tracking systems to associate the fast track citation with the final journal reference.

  This journal features top 10 articles which are freely available. Please click here and click on the 'Top articles' link in the right-hand menu to view the list and start downloading.

• Editorial Board
• Information for Authors
• Subscribe to this Title
• Terms & Conditions
• Online submission site
• Top 10 Articles
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Materials & Manufacturing ,  Mining & Metallurgy
• By this author: Lu, H. ;  Liu, X. S. ;  Yang, J. G. ;  Zhang, S. P. ;  Fang, H. Y.

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers