A comparison of the structure and mechanical properties of commercially pure tungsten rolled plates for the target of the European spallation source

Aldazábal, J.; Garcı́a-Rosales, C.; Meizoso, A. Martín; Ordás, N.; Sordo, F.; Martinez, Jason; Sevillano, J. Gil

doi:10.1016/j.ijrmhm.2017.09.006

Cited by 2 publications

(1 citation statement)

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“…As the demand for tungsten and its alloys in engineering and experimental nuclear physics continue to grow, the need for performing more accurate thermo-mechanical testing also increases [1][2][3][4][5][6][7][8][9][10]. The most required metallurgic characteristic in this context is the elevated temperature dynamic elasticity [11][12][13] that helps in developing advanced metallic grads of refractory materials [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Young’s modulus of tungsten at elevated temperatures using synchronous laser shadow vibrometry

Ayoub

El-Sherif

Hassan

et al. 2018

The International Conference on Mathematics and Engineering Phy

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This paper presents the use of an improved laser shadowgraphy method for measuring the dynamic elastic moduli of tungsten, from room temperature to near melting point. The method is based on measuring the frequency of impulse induced longitudinal vibration of a tungsten filament, subject to joule heating. The natural resonance frequency of the filament is obtained by lock-in synchronous photo-detection of the laser generated filament shadowgraph. The correlation between the filament natural frequency and its temperature lead to the calculation of shear modulus at variable temperatures, the tensile and bulk modului of tungsten. The results were compared to those obtained by laser Doppler vibrometry of a tungsten wire induced by pulsed current technique. Our method permitted a wider measuring temperature range and an easier calculation procedure. The used setup was simple, non-destructive, non-contacting and accurate, enabling low cost vibrometry measurements that help in future synthesis and test of new grades of refractory materials, deployed as plasma facing material in the latest fusion reactor or super alloys in critical applications.

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