The influence of punch curvature on the mechanical properties of compacted powders

Powder Technology

Volumn 107, Issue 1-2, 2000, Pages 79-83

  Newton, J Michael ^a   Haririan, Ismael ^b   Podczeck, Fridrun ^a  

^a UNIVERSITY OF LONDON   (United Kingdom)

^b TEHRAN UNIVERSITY OF MEDICAL SCIENCES   (Iran)

Author keywords

Compacted powder; Mechanical properties; Punch curvature

Indexed keywords

COMPACTION; COMPRESSION TESTING; CRYSTAL STRUCTURE; CRYSTALLINE MATERIALS; POWDERS; STRESS ANALYSIS; STRESS CONCENTRATION; TENSILE STRENGTH;

PUNCH CURVATURE;

CELLULOSE;

MICROCRYSTALLINE CELLULOSE;

ARTICLE; COMPRESSION; MECHANICS; POWDER; TABLET COMPRESSION; TABLET POROSITY; TENSILE STRENGTH; THICKNESS;

EID: 0033985975     PISSN: 00325910     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0032-5910(99)00173-4     Document Type: Article

References (16)

1. Fell J.T., Newton J.M. Determination of the tensile strength of tablets by the diametral-compression test. J. Pharm. Sci. 59:1970;688-691.
2. D. Hartog, Advanced Strength of Materials, McGraw-Hill, New York, 1952.
3. P. Stanley, Mechanical strength testing of compacted powders, Postgraduate School, Production Process in Tablet Manufacture, The Pharmaceutical Society of Great Britain, London, 1985, pp. 123-150.
4. Berenbaum R., Brodie I. Measurement of the tensile strength of brittle materials. Br. J. Appl. Phys. 10:1959;281-287.
5. Rudnick W.C., Hunter A.R., Holden F.C. Analysis of the diametral-compression test. Mater. Res. Stand. 1:1963;283-289.
6. Schmidt P.C., Leitritz M. Compression force/time profiles of microcrystalline cellulose, dicalcium phosphate dihydrate and their binary mixtures - a critical consideration of experimental parameters. Eur. J. Pharm. Biopharm. 44:1997;303-313.
7. Newton J.M., Rowley G., Peacock D.G., Ridgway K.J. Computer analysis of the relation between tablet strength and compaction pressure. J. Pharm. Pharmacol. 23:1971;195S-201S.
8. Newton J.M., Rowley G. A method of characterising tablet formation. J. Pharm. Pharmacol. 24:1972;256-257.
9. Irwin G.R. Analysis of stresses and strains near the end of a crack traversing a plate. J. Appl. Mech. 24:1957;361-364.
10. Stanley P., Newton J.M. Variability in the strength of powder compacts. J. Powder Bulk Solids Technol. 1:1977;13-19.
11. Kennerley J.W., Newton J.M., Stanley P. The influence of dimensions on the strength and strength variability of tablets. J. Pharm. Pharmacol. 29:1977;39P.
12. Pitt K.G., Newton J.M., Stanley P. Tensile fracture of doubly convex cylindrical discs under diametral loading. J. Mater. Sci. 28:1988;273-278.
13. Rice R.W. Comparison of stress concentration vs. minimum solid area based mechanical property-porosity relations. J. Mater. Sci. 28:1993;2187-2190.
14. Rice R.W. Pores as fracture origins in ceramics. J. Mater. Sci. 19:1984;895-914.
15. Rice R.W. Relation of tensile strength-porosity effects in ceramics to porosity dependence of Young's modulus and fracture energy, porosity character and grain size. Mater. Sci. Eng. A. 112:1989;215-224.
16. Pitt K.G., Newton J.M., Richardson R., Stanley P. The material tensile strength of convex-faced tablets. J. Pharm. Pharmacol. 41:1989;289-292.