ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01564.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

Two‐dimensional photoelasticity is used for minimising stress concentration associated with a fillet present at the end of a solid propellant rocket grain subjected to restrained shrinkage. For this purpose, successive holes were added along the bonded interface of case and propellant, but no decrease was obtained. The photoelastic method used illustrates two uncommon techniques of interest to experimental stress analysts: (1) restrained shrinkage loading and (2) a parametric stress‐analysis solution obtained with a single mo

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01565.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.tb01566.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

In order to determine the positions of high stress on large turbine components like ducting, casings, etc., tests were made with various brittle coatings. The coating must cure at room temperature, be insensitive to change in temperature and humidity, be unaffected by immersion in water, have no toxic effects and be sensitive to strains less than the yield strain of mild steel. Robert Ingham Clark's Stress Lacquer R.V. 519 was found to satisfy these requirements.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01567.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.tb01568.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

The value of Young's modulus of a 0–216 mm (0–0085 in) thick sheet of weldable titanium alloy (13% V, 11% Cr, 3% A1) was measured at room temperature by three different methods simultaneously. The results and their analysis give insight into the merits of strain measuring standards at present available at FFA and of the specialised strain measuring methods used at FFA and already described (Ref.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01569.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

An approximate rapid method for the separation of principal stresses along sections of symmetry free from external loads is described. The method is based on the sum of principal stresses and checked by applying it to a circular ring under diametral compression and to a grooved bar in tension.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01570.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

Stresses around holes of equal size drilled at the ends of a crack are determined for uniaxial tension normal to the crack by a combined photoelastic and brittle lacquer technique avoiding difficulties of exactly locating isoclinics. The stress concentration factor decreases continuously with increasing hole size until the crack is displaced by a single hole.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01571.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

The development of a narrow (0.015 in), long (1.48 in) foil strain gauge is described for sensitive measurement of average localised strains, for instance the average tangential strain along the circumference of a hole in a plate under uniaxial or equi‐biaxial tension. Good agreement between measured and analytical values has been obtaine

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1969.tb01572.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.tb01573.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY