摘要:

The Hon. Secretary of the British Society for Strain Measurement wishes to point out that the dates of some of the BSSM meetings in the Diary are provisional and that further meetings may be announced in some regions. Firmer details will be available in due course from the BSSM office, 281 Heaton Road, Newcastle‐upon‐Tyne NE6 50B (Tel: 0632 655273) or from the regional organisers indicated in the D

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1977.tb00214.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

This paper deals with the experimental strain, stress and deflection analysis of a cubic box subjected to concentrated loads applied at the centre of two opposite faces. The ratio between the inside span and the wall thickness varied between approximately 5 and 14. All corners had circular fillets. The experimental analysis was conducted using mechanical and electrical strain gauges and brittle coatings. Results, given parametrically by means of a family of curves representing normalized stresses, are applicable to boxes of any size, made of any elastic materials, provided the wall thickness falls within the investigated range. Some results obtained using the theory of structures approach are included for comparison purposes and presented in a form useful to designers.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1977.tb00215.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Sheet materials with low thermal expansion are employed in the construction of certain precision components and must display excellent dimensional stability. Measurement of small dimensional changes in sheet materials over long periods of time (of the order of two parts per million per year) poses severe experimental problems when conventional measuring techniques such as interferometry are used. To avoid these difficulties, experiments were conducted to explore the usefulness of bonded electrical resistance strain gauges for measuring the dimensional stability of sheet specimens. Based on the results obtained, it is concluded that the strain gauge method is capable of detecting gradual length changes as small as about 1 or 2 parts per million over time periods approaching one year.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1977.tb00216.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

An assembly of nine vibrating‐wire strain gauges designed for the measurement of internal strain is described. Tests have been carried out on concrete specimens containing nine‐gauge devices of different size and stiffness. The processing of the gauge readings is outlined and the results of the test series are critically discus

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1977.tb00217.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

A numerical procedure for obtaining the stress components in the interior of a two‐dimensional body from the values of stresses measured along the boundary, is presented. In this method the two‐dimensional elasticity equations are re‐written in a convenient form and solved using the finite difference technique along with the boundary stress values. The application of the method is illustrated with exa

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1977.tb00218.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1977.tb00219.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1977.tb00220.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1977.tb00222.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Book reviewed in this article:Metal Fatigue by N. E. Frost, K. J. Marsh and L. P. PookVector and Tensor Methods by F. ChorltonPhotoplasticity by J. Javornicky

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1977.tb00223.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1977.tb00224.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY