Sage Journals: Discover world-class research

Abstract

A high irradiance single beam short pulsed Nd: glass laser was used to generate shock waves in 2D carbon-carbon composites. Dynamic brittle fracture at ultra high strain rate was observed as a result of reflected shock waves as tensile waves from the back surface of samples. Successive stages of damage from incipient spallation to complete sample per foration were obtained by increasing gradually the laser energy. The thermo-mechanical damage on the front surface as a result of laser interaction with the target material and the mechanical damage at the back surface as a result of shock wave reflection were characterized by optical and scanning electron microscopy. The failure properties of the composites were related to the processing of densification and graphitization mode.

Get full access to this article

View all access options for this article.

References

Weisshaus, H. , S. Kenig and E. Kastner "Carbon/Carbon Composites Processing-Microstructure-Property Relationships ," Proceedings of the Denmark-Israel Binational Symposium High Temperature Materials, Jerusalem (1986)

Loskarev, V.A. "Physics of the Destruction of and Problems of Heat Transfer in Carbon-Graphite Matenals with Flow of Nitrogen Plasma ," Fisika Goreniya i Vzryva, 22 84-88 (1986)

Evangelides, J.S. Laser Irradiation of Carbon Fibers and Composites, AD-A063783 ( 1979)

Gilath, I. , D. Salzman , M.P. Danel , L. Kornblith and T Bar Noy "Spallation as an Effect of Laser Induced Shock Waves" J of Material Science, 23.1825 (1988)

Gilath, I. , S. Eliezer , M.P. Danel and L. Kornblith. "High Strain Rate Ductility of Aluminum in Uniaxial Tension as an Effect of Laser Induced Shock Waves," C. Y Chiem , H.D. Kunze , L W Meyer , eds., Dynamic Behaviour of Materials, DGM, Information Gesellschaft, pp 669-676 (1988)

Gilath, I. , S. Eliezer , M.P. Dariel and L. Kornblith "Total Elongation at Fracture at Ultra-High Strain Rates," J of Mat Sciences Letters, 7 915 (1988)

Gilath, I. , S. Eliezer , M.P. Dariel and L. Kornblith "Brittle-to-Ductile Transition in Laser Induced Spall at Ultra High Strain Rate, in the 6061-T6 Aluminum Alloy," Appl Phys. Letters , 52 1207 (1988)

Salzmann, D. , I. Gilath and B. Arad "Experimental Measurements of the Conditions for the Planarity of Laser-Driven Shock Waves," Appl Phys Lett , 52 1128 (1988)

Damage in 2D Carbon-Carbon Composites by Short Pulsed Laser Induced Shock Waves

Abstract

Get full access to this article

References