ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00571.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Of a number of methods for testing materials under biaxial stress conditions, the cruciform specimen with tension/compression loading of the arms allows exploration of the whole in‐plane failure envelope. This paper highlights the problems arising in the measuring, monitoring and control of strains in cruciform specimens subject to static and cyclic biaxial loading. Three extensometers are described which have been used respectively for testing high strain fatigue in steels, fatigue crack propagation in steels and fatigue and fracture of a glass reinforced polyester composite. Each extensometer uses a full bridge resistance strain gauge circuit; two are based on bending of a beam and the third on deformation of a thin ring. Examples are shown of stress/strain loops for equibiaxial and shear conditions from fatigue tests on a steel and g.r.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00572.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

The stress concentration during the loading and unloading processes of transient creep is investigated for a strip with semi circular notches by means of the photo‐viscoplasticity, using specimens of celluloid at 65d̀C. The relations between the stress concentration factor, the geometries of strips, and time during the loading and unloading processes are derived from the time dependent variations of isochromatic fringe orders. Such trends cannot be analysed by the ordinary photoplasticity in which the time effect is not taken into accou

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00573.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

The model work presented in this paper was stimulated by investigations carried out on 3.7 m diameter horizontal cylindrical vessels used as oily water separators. In these, internal diaphragms were installed to provide support for the horizontal sand filter bed running the full length of the vessel. By means of four cylindrical plastic models two different designs for the diaphragm are considered. On the basis of strain gauge investigations, conclusions are drawn which should provide a design approach for these components whereby certain peak stresses can be avoided.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00574.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

There is an array of full field experimental stress analysis techniques available to aid the designer or the engineer investigating service failures. This note reviews currently available methods (i.e. photoelasticity, moiré, laser holography, brittle lacquer and SPATE) and assesses their relative merits in practical applications

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00575.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00576.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00577.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00578.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Book reviewed in this article:Subcritical crack growth due to fatigue, stress corrosion and creep. 1984 edited by L.H. LarssonTransducers in measurement and control 3rd edition by P.H. Sydenham, Adam Hilger

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00579.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00580.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY