Półtrepanacyjna Porównawcza Metoda Pomiaru Naprężeń
method of stress measurement in structural elements. The stresses are determined on the basis of measurements of the deformation of the surface at the loaded element by making suitable drillings. This method was developed first for the purpose of examining the state of stress in an existing structural element with a real load. The theory constituting the basis of the method is described, and an analysis is made of the influence of the characteristic parameters of the system of strain gauges chosen for the measurement. Basic relations for gauges made of steel, cast iron, or siporex are established by means of laboratory tests. The principal factors influencing the accuracy of the method are discussed.
References
J. Mathar, Ermittlungen von Eigenspannungen durch Messung vON Bohr-lochverformungen, Arch. Bisenhüttenwesen, 6, 6 (1932), s. 277-281.
G. Mesmer, Fliesserscheinungen bei Spannungsmessverfahren nach J. Mathar, Arch. Eisenhüttenwesen, 2, 10 (1936), s. 59-63 (Gruppe E. Bericht No 529).
W. Soete and R. Vancro mbrugge, An Industrial Method for the Determination of Residual Stresses, Proc. Soci. Exper. Stress Anal. 1, 8 (1950).
C. Riparbelli, A Method for the Determination of Residual Stresses, Proc. Soci. Exper. Stress Anal. 1, 8 (1950).
R. A. Kelsey, Measuring Non-Uniform Residual Stresses by the Hote Drilling Method, Proc. Soci. Exper. Stress Anal. 1, 14 (1956).
Z. Orłoś, Pomiary naprężeń budowie maszyn, PWT Warszawa 1956.
Z. Orłoś, Z. Dyląg, Pomiar naprężeń metoda miejscowego odciążenia, Biul. WAT, 4 (81), 1958.