摘要:

An attempt is made to clarify the effects and the measurement of earth leakage in a strain gauge installation. A rough basis is provided on which the seriousness of the earth leakage effects may be estimated for a single active gauge in a Wheatstone Bridge Circuit.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01580.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

This note presents details of three techniques of monitoring and recording crack growth during fracture testing. The first technique uses special foil gauges, the second extends potential‐flow measurements to asymmetric crack growth; the third uses an acoustic pick‐up to detect intermittent crack growth in plane‐strain fracture toughness te

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01581.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

Article describes the casting of polyurethane rubbers and difficulties in determining Young's Modulus of such a soft rubbery material. Suitable testing procedures are recommended for the wide range of moduli from 16 to 700 lbf/in2 obtainable with different mixes of this material, their fringe‐stress sensitivities are measured and favourable technical applications are pointed ou

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01582.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

An embedded stress sensing head is connected hydraulically to a control cell on a slug which possesses the properties of the host material removed to make place for the sensing head. The hydraulic pressure is regulated by a compensator so that the deformation of the slug is always the same as that of the cavity made for the sensing head.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01583.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

Hologram interferometry was extended to the study of stresses in fixed two‐dimensional photoelastic models. Application to three‐dimensional slice analyses was explored qualitatively. The process involved a double exposure hologram, whereby the hologram of the model was exposed before and after annealing. Reconstruction of the processed hologram displayed isochtomatic and isopachic interference patte

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01584.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

A new method for producing high frequency moire gratings is based on the interference between two monochromatic waves in a photographic medium. A short theory and some experimental results are given.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01585.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

Araldite strips with bonded electric‐resistance strain gauges are accommodated in pockets machined into the flywheel and are cemented to both the flywheel and the adjoining crankshaft. flange. Relative motion between the two components strains the strips and is indicated by amplified electrical outpu

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01586.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

Photoelastic strips bridge a local gap between two bolted or otherwise joined components and the relative displacement between the joint faces is indicated by reflection polariscope.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01587.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01588.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01589.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY