Changjin Sun, Jibin Zhao, Yuhui Zhao, Zhenfeng He, Zhiguo Wang, Yuan Gao. Effects of Laser Melting Deposition Process Parameters on Ultrasonic Testing Accuracy of TA15 Titanium Alloy[J]. Acta Optica Sinica, 2019, 39(10): 1014002
- Acta Optica Sinica
- Vol. 39, Issue 10, 1014002 (2019)
Fig. 1. Cross-sectional diagram of multiple channel overlapping
Fig. 2. Relationship among indices of additive manufacturing
Fig. 3. Schematic of ultrasonic testing system
Fig. 4. Real photographs of samples under different laser powers and hatch spaces. (a) 1800 W-2.0 mm; (b) 1200 W-2.0 mm; (c) 900 W-2.0 mm; (d) 600 W-2.0 mm; (e) 1200 W-2.5 mm; (f) 1200 W-3.0 mm
Fig. 5. Waveform comparison. (a) Before smooth; (b) after smooth
Fig. 6. Influences of process parameters on relative amplitude of scattered signal from back wall. (a) Laser power; (b) hatch space
Fig. 7. Influence of material thickness on attenuation of ultrasonic wave amplitude
Fig. 8. Influences of process parameters on ultrasonic velocity. (a) Laser power; (b) hatch space
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Table 1. Processing parameters and sizes of test specimens
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