Study on the brazing process of titanium sound-reduction honeycomb core sandwich structure

被引：0

作者：

Deng Y. ^{[1
]}

Yue X. ^{[1
,2
]}

Tao J. ^{[1
]}

Jing X. ^{[3
]}

机构：

[1] Aeronautical Key Laboratory for Welding and Joining Technologies, AVIC Manufacturing Technology Institute, Beijing

[2] Northwestern Polytechnical University, Xi'an

[3] Beihang University, Beijing

来源：

Hanjie Xuebao/Transactions of the China Welding Institution | 2019年 / 40卷 / 11期

关键词：

Acoustic performance; Blockage of sound-reduction holes; Mechanical properties; Thickness of brazing filler metal; Titanium sound-reduction honeycomb core sandwich structure;

D O I：

10.12073/j.hjxb.2019400301

中图分类号：

学科分类号：

摘要：

Titanium sound-reduction honeycomb sandwich core structures were brazed by Ti-based brazing filler metals. Effects of brazing filler metal in different thickness on the blockage of sound-reduction holes, brazing interface defects, brazing interface microstructure and mechanical properties of honeycomb sandwich structures were comparatively investigated. Results shows that: with increasing of the thickness of brazing filler metal, the blockage ration of sound-reduction holes is improved, and the dissolution of brazing filler metal to honeycomb core foil is enhanced, which makes the tensile strength of honeycomb sandwich structure decreased dramatically. However, defects at brazing interface are significantly reduced along with the increase of the thickness of brazing filler metal. When the thickness of brazing filler metal is 30 μm at the brazing temperature of 920 °C with the holding time of 90 min, titanium sound-reduction honeycomb sandwich structure with good mechanical properties could be attained, and the experimental results are in good agreement with the theoretical results of the acoustic performance of titanium sound-reduction honeycomb sandwich structure. © 2019, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.

引用

页码：139 / 146

页数：7

共 14 条

[1] Huo L., Study on the structure and acoustic characteristics of anechoic honeycomb sandwich structure, Civil Aircraft Design & Research, 4, pp. 42-53, (2000)
[2] High admittance acoustic liner
[3] Wilson R.S., Noise attenuation panel
[4] Peng S., Progress in noise reduction technology of large civil aircraft nacelle, Science & Technology Information, 24, pp. 751-752, (2011)
[5] Elangovan R., Olsen R.F., Reynolds N.D., Modeling of acoustically treated nacelle lip transpiration flow anti-icing system, 26th International Congress of the Aeronautical Sciences, (2008)
[6] Drevon E., Measurement methods and devices applied to A380 nacelle double degree-of-freedom acoustic linear development, 10th AIAA/CEAS Aeroacoustics Conference, (2004)
[7] Smith J.T., Aircraft Noise, (1989)
[8] Gao X., Si H., Yue X., Et al., Brazing process of TC4/TA18 titanium honeycomb sandwich constructure, Aeronautical Manufacturing Technology, 11, pp. 109-112, (2015)
[9] Jing Y., Li X., Xie Z., Et al., Influence of geometrical parameters on specific strength of Ti-based alloy honeycomb unit, Transactions of the China welding institution, 34, 9, pp. 103-106, (2013)
[10] Ganjeh E., Sarkhosh H., Bajgholi M.E., Et al., Increasing Ti-6Al-4V brazed joint strength equal to the base metal by Ti and Zr amorphous filler alloys, Materials Characterization, 71, pp. 31-40, (2012)

← 1 2 →