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 5QB (Tel: 0632 655273) or from the regional organisers indicated in the Di

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1975.tb00156.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

The moulding residual stress level in a miniature non–metallic (Noryl) telecommunications switch was measured using strain gauge and photoelastic techniques. Strain gauge results were obtained using a modified Waisman and Phillips1layer removal technique, which indicated maximum residual stresses of the order of 650 lbf/in2(4.5 MN/m2) and a considerable stress gradient in the cross section of the component. Photoelastic measurements were made on slices from components in polycarbonate which has the same mould shrinkage value as Noryl. The results showed a maximum surface residual stress of 240 lbf/in2(1.7 MN/m2). Interpretation of the exceptionally high fringe orders observed, was very difficult and the validity of this application of photoelasticity is questione

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1975.tb00157.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

This article describes the development, characteristics and limitations of an invention which enables a dual strain gauge, together with a solid state module, to produce an F.M. signal uniquely related to strain in the gauges. The frequency of this signal can be read by a crystal counter at the end of long leads and through ordinary switches, without error therefrom.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1975.tb00158.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

Practical details are presented concerning the use of strippable film for the production of moiré gratings. Strippable film is produced primarily for application in graphic arts. The influence of the use of the film on the accuracy of measurement in the direct moiré method is discusse

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1975.tb00159.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

Strain gauges embedded in plastic models can be used in three dimensional stress analysis. When gauges are located immediately below a surface subjected to the tangential traction of a sliding load, unexpected values are recorded. This phenomenon was investigated by suitably loading a semi–infinite solid with normal and shear stresses and comparing theoretical strain values with the experimental results. The comparison showed that strain gauges embedded in epoxy can be successfully used under sliding loads provided that the gauge depth below the contact surface is greater than a critical valu

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1975.tb00160.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1975.tb00161.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

Book reviewed in this article:Free Vibration Analysis of Beams and Shafts by D. J. GormanElectronic and Switching Circuits by S. M. Bozic, R. M. H. Cheng and J. O. ParsonsQuality Technology Handbook Second Edition, 1975, N.D.T. Centre

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1975.tb00162.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

With memories of the previous and very successful Scottish Region's conference at Strathclyde University still reasonably fresh in mind, I naturally wondered whether history would repeat itself this year in Edinburgh. The additional complexities of running a joint conference, the problems connected with the use of a brand–new site and the choice of a subject which, although very appropriate to the times and the place, was not perhaps one in which the bulk of our membership was involved, all gave grounds for slight apprehensio

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1975.tb00163.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1975.tb00164.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1975.tb00165.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY