ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1971.tb01697.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

This paper is the second in a series of three which covers (1) theoretical considerations, (2) experimental features and (3) practical applications of X‐ray diffractometer techniques to the accurate determination of residual macrostresses. The first paper appeared in the April 1970 issue of “Stra

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1971.tb01698.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1971.tb01699.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

A technique is described for the preparation of contact‐copy prints of gratings by means of reflex photography. The authors suggest that the method gives increased contrast and definition compared with classical methods of preparing print

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1971.tb01700.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

The paper describes commercial fringe multiplication equipment designed for rapid analysis of frozen stress slices.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1971.tb01701.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

Three commonly used methods of bridge balancing are analysed. Relations and graphs are presented for ready determination of the necessary resistances and potentiometers. A circuit with a potentiometer parallel to two bridge arms and with a single limiting resistor between apex and potentiometer slider appears to be the simplest and most economical; it also gives a comparatively small error.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1971.tb01702.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

A fatigue life gauge, mounted on a mechanical amplifier and bonded to a structure, will integrate the load/frequency pattern to which it is exposed. Subject to static calibration establishing the strain/load relationship registered by the device, gauge manufacturers data will closely predict the output for programmed loading within the range of 0–2 to 40 ohms. The purpose of the device is to compare the rate of loading, accumulated by a test structure, with the rate accruing to similar structures undergoing variable service loading. Inasmuch as this loading affects the fatigue life of a component, the device will monitor fatigue damage. Some agreement is shown between laboratory test of an aircraft fin and measurements taken during routine flying. The device is sensitive to change in aircraft utilisation. In the case of fin structure, no correlation exists between the measured damage factor and the damage assessed by the standard aircraft fatigue mete

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1971.tb01703.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

This article presents a theoretical analysis of the action of carbon radio resistors as pressure transducers and shows how, from practical measurements, gauge factors can be predicted without the necessity to calibrate. Practical measurements agree well with predicted values, and for large numbers of expendable gauges, considerable time saving with little loss of accuracy can be obtained by use of predicted gauge factors.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1971.tb01704.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1971.tb01705.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1971.tb01706.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY