ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1992.tb00780.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

A straightforward method is described whereby the magnitudes and directions of the principal stresses and strains in two or three dimensions may be derived using the matrix methods of elementary linear ulgebra. The ideas are extended to simplify the classical derivation of the extreme values of shear stress and of the octahedral stresses. After a description of several visual aids, the work concludes with a definition of the von Mises yield surface consistent with the foregoing procedures.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1992.tb00781.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

A new experimental method called retrographic imaging has been developed which uses retroreflected light for visualising minute irregularities in reflective opaque surfaces. This paper provides a qualitative explanation of this phenomenon, the experimental setup required for such imaging, and describes an experiment which was devised to determine how this type of imaging can be correlated to actual surface topography. Results indicate that grey level intensity is proportional to an average between the surface contour and its rate of change of slope.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1992.tb00782.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

In this paper, a new method for the measurement of three dimensional residual stresses in a multi‐pass butt welded joint is presented. The method involves the measurement of strain changes at a through hole surface as a coupon of material with the hole is separated from the body of interest and split. The finite element calculations are used to relate the strain changes at the measurenent points to the initial residual stresses at the hole location. The accuracy of the method is demonstrated by using it to measure a known stress field in a bent beam. The method has been used to measure the through thickness distribution of three dimensional residual stresses in a multi‐pass butt welded joint. It could also be applied to the measurement of residual stresses in other welded joi

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1992.tb00783.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

A recent paper by H L Pang and S R Pukas1touched on some important aspects of non‐uniform residual stress measurement by the hole drilling method. This note discusses three significant issues raised in that paper, and presents a dissenting viewpoint. The three issues concern: the reliability of calibration constants derived from finite element calculations, the choice of basic stress calculation formulations, and methods used to compute the residual stress variation with depth from the specimen surfac

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1992.tb00784.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Book reviewed in this article:Advances in subsea pipeline engineering and technology, edited by C. P. EllinasAn introduction to the finite element method using basic programs, 2nd edition, by D.K. BrownHandbuch für experimentelle spannungsanalyse, edited by C. Rohrbac

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1992.tb00785.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1992.tb00786.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1992.tb00787.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1992.tb00788.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1992.tb00789.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY