Abstract
An ultrasonic method to examine statical stress fields in the subsurface layers of cylindrical steel forgings is described. The values of stresses are calculated from precise measurements of travel times of subsurface pulses longitudinal and transverse waves propagating in the direction of generating line. Suitable apparatus is described and some results of investigations of a shipborne shaft forging with favourable and unfavourable distributions of residual stresses are shown. Longitudinal and hoop stresses in a steel mill roll are also examined.
References
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H.IWAND, A comparative analysis using Berkhausen noise analysis1 ultrasonic bireffingence and saw cutting techniques in determination of residual stress in railroads wheels, Thesis, University of Nebraska, 1988.
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DEBRO-SO, Ultrasonic stress meter, IPPT PAN, Warszawa 1989.
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E.SCHNEIDER, R.HERZER and D.BRUCHE, Atdomatisierte Bestimmung Oberflachennaher Spannungszustande in Walzen mittels Ultraschallverfahren, Deutsche Gesellschaft fur Zerstorungsfreie Prufung, Jahrestagung, 419-426, Kiel, 25-27 September 1989.
J.DEPUTAT, J.BROKOWSKI, Ultrasonic measurements of residual stress in rails, Proc. 11 World Conference on Nondestructive Testing, 1, 592, Las Vegas 1985; Taylor Publ. Co., Dallas 1985.
D.UTRATA, Stress measurements in rail using ultrasonic-based nondestructive methods and strain gage hole-drilling, Assiociation of American Railroads, Reports R-779, Chicago, June 1991.
K.TITTO, Measuring stresses in rolls by magnetoelastic method, Proc. 27th Mechanical Working and Steel Processing Conference, Cleveland, October 27-29, 1985.
H.IWAND, A comparative analysis using Berkhausen noise analysis1 ultrasonic bireffingence and saw cutting techniques in determination of residual stress in railroads wheels, Thesis, University of Nebraska, 1988.
D.A.HUGHES and G.S.KELLY, Second-order elastic deformation of solids, Phys. Rev., 92, 1145, 1953.
J.DEPUTAT, Fundamentals and applications of ultrasonic tensometry [in Polish], Dozór Techniczny. Part I, 3, 95, 1983, Part II, 4, 142, 1983.
J.DEPUTAT, Properties and usage of elasto-acoustic phenomenon to measure residual stresses [in Polish], Prace IPPT PAN, 1987.
DEBRO-SO, Ultrasonic stress meter, IPPT PAN, Warszawa 1989.
J.DEPUTAT, On ultrasonic measurements of residual stresses in cylinders [in Polish], XIV Conference on Nondestructive Testing, Kiekrz 2-4 X 1985, Referat R-10, 254, 37-38, Wyd. ITWL, Warszawa 1985.
E.SCHNEIDER, R.HERZER and D.BRUCHE, Atdomatisierte Bestimmung Oberflachennaher Spannungszustande in Walzen mittels Ultraschallverfahren, Deutsche Gesellschaft fur Zerstorungsfreie Prufung, Jahrestagung, 419-426, Kiel, 25-27 September 1989.
J.DEPUTAT, J.BROKOWSKI, Ultrasonic measurements of residual stress in rails, Proc. 11 World Conference on Nondestructive Testing, 1, 592, Las Vegas 1985; Taylor Publ. Co., Dallas 1985.
