Laser Welding Part 4 doc

... 312.0 ~ 90 % ~ 2.25 % 4 385.0 ~ 90 % ~ 1.19 % 2 40 3 .4 ~ 90 % ~ 0.62 % 1 340 .0 ~ 68 % ~ 0.25 % Table 2. Decrease in EWE and efficiency when speed drops to 1 mm/s. 4. 1 Laser Power Distribution ... 312.0 ~ 90 % ~ 2.25 % 4 385.0 ~ 90 % ~ 1.19 % 2 40 3 .4 ~ 90 % ~ 0.62 % 1 340 .0 ~ 68 % ~ 0.25 % Table 2. Decrease in EWE and efficiency when speed drops to 1 mm/s. 4. 1...

Ngày tải lên: 21/06/2014, 02:20

... interaction with laser pulses. 20 Laser Pulses Stevens, T. E. et al. (2002). Coherent phonon generation and the two stimulated Raman tensors. Physical Review B, Vol. 65, March 2002, 144 3 04. Uteza, ... pair was generated by splitting femtosecond pulses ( 844 nm, ~ 40 fs, 80 MHz) from a Ti: sapphire laser (Tsunami, Spectra physics) into two equal parts by means of a Michelson inter...

Ngày tải lên: 20/06/2014, 06:20

... first fused by laser welding to remove the high stress concentration at the crack front before Low speed laser welding of aluminium alloys using single-mode ber lasers 67 4. 4 The Probable ... 312.0 ~ 90 % ~ 2.25 % 4 385.0 ~ 90 % ~ 1.19 % 2 40 3 .4 ~ 90 % ~ 0.62 % 1 340 .0 ~ 68 % ~ 0.25 % Table 2. Decrease in EWE and efficiency when speed drops to 1 mm/s. 4. 1 Laser...

Ngày tải lên: 20/06/2014, 11:20

... 105 46 583 266 195 2 100 25 10 7 41 5 34 245 178 3 500 5 81 31 43 0 242 182 4 500 25 83 28 48 3 239 166 5 300 15 91 44 5 54 235 186 6 300 15 81 45 593 238 180 7 300 15 9 7 44 618 24 7 183 8 ... 105 46 583 266 195 2 100 25 10 7 41 5 34 245 178 3 500 5 81 31 43 0 242 182 4 500 25 83 28 48 3 239 166 5 300 15 91 44 5 54 235 186 6 300 15 81 45 593 238 18...

Ngày tải lên: 20/06/2014, 11:20

... strength (MPa) 345 245 50 Poisson ratio 0.317 0.317 0.317 Thermal conductivity (W.m -1 .°C -1 ) 17.3 17.3 17.3 Heat capacity (J.kg -1 ) 43 9 43 9 649 Melting point (°C) 145 0 Table 1. Values ... Kovar material ( 147 3K). Fig. 11 shows the nodal solution contour plot of thermal cartography of Laser platform after first Laser welding process. 0 200 40 0 600 800 1000 1200...

Ngày tải lên: 20/06/2014, 11:20

... 55.11 19538 62 54.  9 27E 131908 E Mn 9.123 59 84 07 .47 0 14.  45 .1 E Cr 07.87 3505 65.33 929. 73.8 E Ni 3.2 14 3519 94. 74 018. 71.15 E ... time. 4. Laser welding of SS316 4. 1. Experimental setup A long pulsed Nd: YAG laser Model IQL-10 with mean power of 40 0 W and standard square shape pulse is chosen as the w...

Ngày tải lên: 21/06/2014, 02:20

... 273 .4 4396 65.9 17.7 7 4x30 271.7 44 57 66.2 18.2 7 4x40 271.5 42 55 64. 2 16.6 8 4 sides 4x20 267 .4 445 5 56.2 16.5 10 4x30 258 .4 43 94 56 .4 18.0 8 4x40 259.7 43 13 58.5 16.5 5 Table 3. Numerical ... 273 .4 4396 65.9 17.7 7 4x30 271.7 44 57 66.2 18.2 7 4x40 271.5 42 55 64. 2 16.6 8 4 sides 4x20 267 .4 445 5 56.2 16.5 10 4x30 258 .4 43 94 56 .4 18.0 8 4x40 25...

Ngày tải lên: 21/06/2014, 07:20

... strength (MPa) 345 245 50 Poisson ratio 0.317 0.317 0.317 Thermal conductivity (W.m -1 .°C -1 ) 17.3 17.3 17.3 Heat capacity (J.kg -1 ) 43 9 43 9 649 Melting point (°C) 145 0 Table 1. Values ... Kovar material ( 147 3K). Fig. 11 shows the nodal solution contour plot of thermal cartography of Laser platform after first Laser welding process. 0 200 40 0 600 800 1000 1200...

Ngày tải lên: 21/06/2014, 07:20

Ngày tải lên: 13/12/2013, 19:15

Ngày tải lên: 13/12/2013, 21:15