Affiliation:
1. "Politehnica" University of Timisoara
2. “Politehnica” University of Timişoara
3. Politehnica University of Timisoara
4. Loughborough University
Abstract
In recent years, advances in material testing equipment caused the determination of mechanical properties by means of three-point bending tests to lose ground in detriment to more accurate tensile tests. However, if components undergo bending deformation in service, the identification of the materials flexural behaviour is essential. The investigated material is a thermoplastic polymer, test specimens being cut in prismatic shapes from injected sheets, which present a variation in properties due to cooling conditions. This paper presents results of three-point bending tests with emphasis on the influence of strain rate and anisotropy on flexural strength and chord modulus. Results show an increase in flexural properties with strain rate and a considerable influence of anisotropy on mechanical properties.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference13 articles.
1. S. Timoshenko, Strength of Materials - Part I: Elementary Theories and Problems. D. Van Nostrand Company, (1948).
2. L. H. Sperling, An introduction to Physical Polymer Science, Fourth Edition. Wiley-Interscience, (2006).
3. A. Kumar and R. K. Gupta, Fundamentals of Polymer Engineering, Second Edition. 2003: Marcel Dekker Inc.
4. H. F. Brinson and L. C. Brinson, Polymer Engineering Science and Viscoelasticity: An Introduction. Springer Science, (2008).
5. D. A. Şerban, G. Weber, L. Marşavina, V. V. Silberschmidt, and W. Hufenbach, Tensile properties of semi-crystalline thermoplastic polymers: Effects of temperature and strain rates, Polymer Testing, no. 32, p.413–425, (2013).