ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00560.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Considering one‐axial strain fields in the penetration depth of X‐rays, the corresponding measurement distribution of e versus sin2ψ are calculated for 24 different one‐axial strains. The parameter is the measurement direction. The deformations of neighbouring points are calculated with Taylor series and described with linear expressions. There are five different types of curves, which can be combined linearly. The calculations are only applicable for plane su

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00561.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

The use of an automatic recording microdensitometer in conjunction with a fringe multiplying polariscope for analysing small portions of slices from frozen stress photoelastic models is described in detail. The method is used to find the load distribution in the threads of a 30 mm ISO nut and bolt model. The accuracy is discussed and shown to be comparable to that of conventional photoelastic techniques.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00562.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

An insight into strain gauge telemetry techniques explaining why telemetry can offer interesting advantages over conventional strain gauge systems. The difference between a.c. strain gauge measurements and analogue to digital conversion followed by a.c. transmission is discussed together with the importance of a.c. transmission in the avoidance of drifts and parasitic effects applicable to d.c. systems.A comparison between frequency modulation (FM) and time or pulse duration modulation (PDM) explains why PDM can offer significant advantages.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00563.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

A trial agreement concerned with the effect of adjacent deep excavations on the risk of failure of buried cast iron gas and water mains was implemented by British Gas and National Water Council on 1 January 1983. To complement this agreement, field experiments are being carried out at selected sites throughout the UK. The British Gas Engineering Research Station (ERS) is working in cooperation with the Water Research Centre to install instrumentation to measure pipe strains, joint movement, ground temperature and ground movement.Field measurements impose environmental and operating conditions of much greater severity than those encountered in a laboratory. This note outlines the site techniques developed by ERS which allow reasonably quick and reliable installation of equipment capable of withstanding the adverse conditions typical of backfilled trenches. The principle of operation of the VW gauge, its method of fixing, the factors affecting its output and the interpretation of the readings themselves are described.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00564.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.tb00565.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.tb00566.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.tb00567.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY

摘要:

Book reviewed in this article:Austenitic stainless steels: Microstructure and mechanical properties by P. MarshallExperimental methods for engineers by J.P. Holman

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1985.tb00568.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.tb00569.x

出版商:Blackwell Publishing Ltd    

年代:1985

数据来源: WILEY