scholarly journals Optimal Design and Experimental Verification of Ultrasonic Cutting Horn for Ceramic Composite Material

2021 ◽  
Vol 11 (4) ◽  
pp. 1954
Author(s):  
Mibbeum Hahn ◽  
Yeungjung Cho ◽  
Gunhee Jang ◽  
Bumcho Kim

We developed and optimized a block-type ultrasonic horn that can be used for cutting hard materials. The proposed block-type sonotrode consists of an aluminum horn and a tungsten carbide blade to increase the cutting of hard materials. We designed an initial ultrasonic block horn that has double slots and an exponential stepped profile. We developed a finite element model of the initial model and analyzed the characteristics of natural frequency and displacement. We formulated a DOE table and response surface to perform sensitivity analysis and analyze the correlation between the design variables and characteristics of the proposed block horn. The optimal ultrasonic block horn was derived via a multi-objective optimal design problem to maximize the amplitude uniformity of the proposed horn and frequency separation. We fabricated the optimal block horn and verified it experimentally. An ultrasonic cutting experiment was conducted to find the ultrasonic cutting force with hard ceramic composite materials. A cutting test with a conventional cutting machine under the same condition was also conducted to compare the cutting force. The proposed optimal ultrasonic cutter requires 70% less cutting force than the conventional cutter to cut a ceramic composite material and the cutting surface with the application of the proposed optimal ultrasonic cutter is much cleaner with no crack and delamination than that with the application of the conventional cutter.

2021 ◽  
Vol 871 ◽  
pp. 216-221
Author(s):  
Jing Tao Dai ◽  
Pei Zhong Zhao ◽  
Hong Bo Su ◽  
Hao Dong Liu ◽  
Yu Bo Wang ◽  
...  

Composite material is widely used to maintain damaged structures of aircraft. The 3D finite element model of composite cement maintenance for aircraft is established by finite element method software ANSYS Workbench. The structural characteristics and usage status of the composite cement maintenance model is analyzed, and then the optimal structural parameters of the composite patch are obtained, including the length, width and thickness. The results show that the composite cement maintenance method could effectively restore the rigidity, and improve the strength of the structure. Furthermore, the optimal design for composite patch ensures safety of aircraft, economics of maintenance, and operability of repair methods.


2020 ◽  
pp. 51-62
Author(s):  
Yu.E. Lebedeva ◽  
◽  
A.N. Afanasev-Hodikin ◽  
G.M. Prokopchenko ◽  
A.A. Shavnev ◽  
...  

The interaction of the SiC–SiCw–B4C–AlN system ceramic composite material (CCM) with the EP648 alloy in the process of high-temperature brazing was studied. The smallest erosion activity both in relation to CCM, and to the EP648 alloy, has HMP solder VPr50. An experimental constructionally similar sample of the nozzle assembly sector was made using uncooled nozzle blade prototypes from CCM. Tests of an experimental constructionally similar sample of the nozzle assembly sector at a temperature of 1500 °C were carried out. No traces of material ablation from the surface of the CMC were found.


2010 ◽  
Vol 51 (4) ◽  
pp. 364-369 ◽  
Author(s):  
D. V. Yartsev ◽  
A. V. Lakhin ◽  
Yu. M. Vol’fkovich ◽  
A. V. Manukhin ◽  
E. A. Bogachev ◽  
...  

2015 ◽  
Vol 72 (1-2) ◽  
pp. 13-16 ◽  
Author(s):  
N. A. Fedosova ◽  
P. P. Faikov ◽  
N. A. Popova ◽  
É. M. Kol’tsova ◽  
E. V. Zharikov

2018 ◽  
Vol 91 (5) ◽  
pp. 785-792 ◽  
Author(s):  
Yu. E. Lebedeva ◽  
G. M. Prokopchenko ◽  
S. Yu. Modin ◽  
I. O. Belyachenkov ◽  
D. V. Grashchenkov

Sign in / Sign up

Export Citation Format

Share Document