2004
DOI: 10.1016/j.msea.2003.10.334
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The shock-induced mechanical response of the shape memory alloy, NiTi

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Cited by 20 publications
(2 citation statements)
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“…where α is the fraction of the internal energy devoted to the thermal energy (typically, α ≈ 0.25), I 0 is the laser power density and Z = 2Z 1 Z 2 /(Z 1 + Z 2 ) is the reduced shock impedance between the absorption material (black paint, shock impedance 1.98 × 10 5 g•cm −2 •s −1 ; Al, shock impedance 1.47 × 10 6 g•cm −2 •s −1 ) and the confining medium (water, shock impedance 1.45 × 10 5 g•cm −2 •s −1 ; BK-7 glass, shock impedance 1.44 × 10 6 g•cm −2 •s −1 ). The pressure transmitted into the NiTi material is enhanced due to the impedance mismatch between the absorption material and target material (NiTi, shock impedance 3.44 × 10 6 g•cm −2 •s −1 ) [25]. As shown in Table 3, the peak shock pressure varies from 3.8 to 8.8 GPa for the combination of different confined overlay and absorbed layer.…”
Section: Experimenal Resultsmentioning
confidence: 99%
“…where α is the fraction of the internal energy devoted to the thermal energy (typically, α ≈ 0.25), I 0 is the laser power density and Z = 2Z 1 Z 2 /(Z 1 + Z 2 ) is the reduced shock impedance between the absorption material (black paint, shock impedance 1.98 × 10 5 g•cm −2 •s −1 ; Al, shock impedance 1.47 × 10 6 g•cm −2 •s −1 ) and the confining medium (water, shock impedance 1.45 × 10 5 g•cm −2 •s −1 ; BK-7 glass, shock impedance 1.44 × 10 6 g•cm −2 •s −1 ). The pressure transmitted into the NiTi material is enhanced due to the impedance mismatch between the absorption material and target material (NiTi, shock impedance 3.44 × 10 6 g•cm −2 •s −1 ) [25]. As shown in Table 3, the peak shock pressure varies from 3.8 to 8.8 GPa for the combination of different confined overlay and absorbed layer.…”
Section: Experimenal Resultsmentioning
confidence: 99%
“…where α is the fraction of absorbed energy contributed by the thermal energy ( α = 0.25), I 0 is the laser power density and Z ( 2 /Z = 1 / Z 1 + 1 / Z 2 ) is the reduced shock impedance between the confining layer (BK-7, shock impedance 1.44 × 10 6 g cm −2 s −1 ) and the absorption material (Al, shock impedance 1.47 × 10 6 g cm −2 s −1 ). The shock pressure transmitted into the NiTi material is enlarged due to the impedance mismatch between the target material (NiTi, shock impedance 3.44 × 10 6 g cm −2 s −1 ) and the absorption material ( Millett and Bourne, 2004 ). The peak pressure generated by laser induced shock varies from 7.5 to 10.0 GPa for laser power densities from 2.6 to 4.4 GW/cm 2 .…”
Section: Pdv Resultsmentioning
confidence: 99%