Open Access

ARTICLE

Nondestructive and Destructive Testing of Reinforced Polymeric Materials

E.E. Theotokoglou¹, E. Sideridis¹

1 NTUA, Department of Mechanics Laboratory of Testing and Materials, Zografou Campus 15773, Greece.

Structural Longevity 2012, 8(2), 83-97. https://doi.org/10.3970/sl.2012.008.083

Abstract

In this work a class a particle reinforced polymers have been investigated using nondestructive and destructive techniques. The velocities cl and ct of the longitudinal and transverse waves were evaluated using ultrasounds. From these and from the density of the material the modulus of elasticity, the shear modulus and the Poisson ratio were calculated by the appropriate relationships. The results were compared with those obtained from destructive tensile experiments and as well as with those derived from theoretical formulae. Also, their attenuation coefficient α and damage parameter D were obtained and an attempt was made to establish a relationship between strength and the effect of frequency, results obtained from dynamic experiments carried out on iron- ultrasonic attenuation in the composite material. Finally, in order to investigate the effect of frequency, results obtained from dynamic experiments carried out on iron-epoxy composites were compared with those obtained from ultrasounds.

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Keywords

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