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BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI Publicat de Universitatea Tehnică „Gheorghe Asachi“ din Iaşi, Tomul LVIII (LXII), Fasc. 4, 2012 Secţia CONSTRUCŢII DE MAŞINI STUDY OF A CHROMOPLASTIC MATERIAL SHEAR BREAKING BY COSTICĂ ATANASIU ∗ 1 , BOGDAN LEIŢOIU 2 and ŞTEFAN SOROHAN 3 Received: May, 26, 2012 Accepted for publication: June 30, 2012 1 Technical Sciences Academy from Romania 2 "Gheorghe Asachi" Technical University of Iaşi 3 "Politehnica" University of Bucharest Abstract. The chromoplastic material is a compounded polymer prepared at the Chemical Research Institute from Bucharest. A tensile test characteristic type Prandtl was obtained for this material. Also, a color changing was observed at the occurrence of the plastic joint, whiten in color when a tensile flow, and darken in color when a compression load flow is producing. Authors present pure shear tests results researches on chromoplastic material specimens, processed according to ASTM requirements, which is based on Iosipescu shear test method. The elasticity theory relations are used and FEM numerical verifications are carried though to determine the shear broken stress, crack initiation and fracture section shape. This work shows benefits of using chromoplastic materials in elastic-plastic and plastic domain researches. Key words: chromoplastic material, pure shear, plastic domain, electrical resistive strain transducers, finite elements. 1. Introduction Strength and rigidity, as well as the industrial or civil structures integrity calculations fulfilling, requires the knowledge of mechanical and elastic characteristics of materials and load applied. New materials issuing and numerical analysis methods development of the stress and strain state by ∗ Corresponding author: e-mail: atanasiucostica@yahoo.com
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VICTOR COTOROS şi EMIL BUDESCU, As
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262 Iona Ţenu et al. REFERENCES C
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