SEDL / STP / STP1045-EB / STP24616S

Longitudinal and Flexural Resonance Methods for the Determination of the Variation with Temperature of Dynamic Young's Modulus in 4330V Steel

Cook, LS
Graduate Research Assistant and ProfessorResearch Metallurgist, Texas A&M UniversityOak Ridge Y-12 Plant, College StationOak Ridge, TXTN

Wolfenden, A
Graduate Research Assistant and ProfessorResearch Metallurgist, Texas A&M UniversityOak Ridge Y-12 Plant, College StationOak Ridge, TXTN

Ludtka, GM
Graduate Research Assistant and ProfessorResearch Metallurgist, Texas A&M UniversityOak Ridge Y-12 Plant, College StationOak Ridge, TXTN

Pages: 15    Published: Jan 1990

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Abstract

The variation with temperature of dynamic Young's modulus in 4330V steel has been characterized using a longitudinal resonance method (the piezoelectric ultrasonic composite oscillator technique - PUCOT) and a flexural resonance method (the impulse excitation technique - IET). The PUCOT yielded an ambient temperature dynamic Young's modulus value of 206.3 GN/m² while values obtained from the IET ranged from 197.5–206.8 GN/m². Both techniques yielded a dE/dT value of -0.08 GN/(m² K). In addition, three numerical methods for the calculation of dynamic Young's modulus from flexural resonance frequencies of prismatic specimens have been evaluated. Experimental uncertainty at ambient temperature has been calculated for the PUCOT and the IET.