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Proceedings Paper

Operational Experiences With The 'SPATE 8000' Dynamic Stress Measurement System
Author(s): R. G. Bream; B. C. Gasper; S. W. J. Page; B. E. Lloyd
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Paper Abstract

The SPATE 8000 stress measurement system was purchased primarily to determine dynamic stresses on operational electrical power generating plant where difficulties have arisen in using conventional methods of stress measurement. In this context this paper describes some of the requirements to enable this system to be used to obtain the minimum resolvable stress level on a steel bellows unit vibrating at a resonant frequency of 372Hz. The influence of a range of parameters including, (i) surface coatings, (ii) liquid nitrogen level, (iii) high acoustic noise (108dB at 372Hz) and (iv) environmental conditions, on the measured stresses are discussed. Problems relating to laboratory and on site calibration of the system are also presented. Finally the modal analysis capabilities of SPATE are compared with conventional modal analysis techniques using a vibrating steel plate as an example.

Paper Details

Date Published: 1 April 1987
PDF: 24 pages
Proc. SPIE 0731, Stress Analysis by Thermoelastic Techniques, (1 April 1987); doi: 10.1117/12.937899
Show Author Affiliations
R. G. Bream, Central Electricity Generating Board (England)
B. C. Gasper, Central Electricity Generating Board (England)
S. W. J. Page, Central Electricity Generating Board (United Kingdom)
B. E. Lloyd, Central Electricity Generating Board (England)

Published in SPIE Proceedings Vol. 0731:
Stress Analysis by Thermoelastic Techniques
B. C. Gasper, Editor(s)

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