Abstract
We present the results of mechanical testing of pressed lithium hydride under the conditions of uniaxial compression, radial compression, and bending. The specimens were made of three different powder fractions. Their density varied depending on the level of compacting pressure. It is shown that, in the investigated range of parameters characterizing the initial state of the material, the dependences of strength on the characteristic size of the original powder d and the density of the material of the specimen ρ can be described by the same formula of the form σ f =σ0-klog(d/d 0)+l(ρ-ρ0), where d0 and ρ0 are arbitrarily chosen reference points, and σ0, k, and l are coefficients determined by the method of regression analysis. The use of data on the strength of pressed lithium hydride under the conditions of uniaxial and radial tension processed as indicated above enabled us to obtain a similar dependence for the conditions of uniaxial tension.
Similar content being viewed by others
References
V. K. Golubev and K. G. Rabinovich, “Pressing of lithium hydride in the pressure range 0–570 MPa,”Neorg. Mater.,33 No. 10, 1207–1211 (1997).
V. K. Golubev, K. G. Rabinovich, and L. V. Polyakov, “On the influence of conditions of pressing on the compression strength of lithium hydride,”Zhurn. Prikl. Mekh. Tekh. Fiz.,38, No. 6, 166–167 (1997).
V. K. Golubev, K. G. Rabinovich, and L. V. Polyakov, “Compression of specimens of a pressed brittle material in a channel with gap,”Zavod. Lab.,63, No. 8, 48–49 (1997).
É. M. Mikhailovskii, “Determination of the tensile strength of brittle materials,”Probl. Prochn., No. 11, 53–56 (1976).
Additional information
Russian Federal Nuclear Center, All-Russia, Scientific Research Institute for Experimental Physics, Sarov, Russia. Translated from Problemy Prochnosti, No. 6, pp. 134–137, November–December, 1999.
Rights and permissions
About this article
Cite this article
Golubev, V.K., Rabinovich, K.G. Influence ff the initial state on the strength of pressed lithium hydride. Strength Mater 31, 625–628 (1999). https://doi.org/10.1007/BF02510900
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02510900