scholarly journals Design and Development of a Novel Ultrasonic Field Wetting Angle Measuring Instrument for Researching the Wetting of the Liquid–Solid Interface

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1400
Author(s):  
Jingtao Zhao ◽  
Liping Ning ◽  
Zongming Jiang ◽  
Yinglong Li
Keyword(s):  
Composite Materials ◽  
Modal Analysis ◽  
Longitudinal Vibration ◽  
Ultrasonic Transducer ◽  
Technical Problem ◽  
Ultrasonic Field ◽  
Wetting Angle ◽  
Measuring Instrument ◽  
Solid Interface ◽  
Angle Measuring

A key technical problem in the preparation of Al-Ti-C grain refiner and other composite materials is the poor wetting of the Al-C interface, which greatly restricts the development of the preparation technology of related composite materials. In view of this scientific challenge, a novel ultrasonic field wetting angle measuring instrument has been designed to research the wetting behavior of the liquid–solid interface and ensure that preparation conditions are optimized. The dimensional parameters of the ultrasonic transducer and the horn in the novel ultrasonic wetting angle measuring instrument have been designed by theoretical calculation, and the modal analysis was performed for the ultrasonic horn using the functions of displacement and time. Modal analysis was utilized to optimize the dimension of the ultrasonic horn, and the natural frequency of the longitudinal vibration of the horn was reduced from 22,130 Hz to 22,013 Hz, resulting in an error rate between the actual value (22,013 Hz) and the design value (20 kHz) of less than 1%. In addition, the influence of different transition arc radiuses on the maximum stress of the optimized ultrasonic horn was analyzed.

The Study on Circular Tool of Ultrasonic Cutting

2013 ◽  
Vol 765-767 ◽  
pp. 92-95
Author(s):  
Yun Dian Zhang ◽  
Liang Fang ◽  
Zhi Ping Lu ◽  
Jia Ying Yu
Keyword(s):  
Differential Equation ◽  
Composite Materials ◽  
Resonance Frequency ◽  
Modal Analysis ◽  
High Precision ◽  
Processing Efficiency ◽  
Working Principle ◽  
High Processing ◽  
Ultrasonic Cutting

The ultrasonic cutting of composite materials has the advantages such as high processing efficiency, high precision and non-pollution. The working principle of ultrasonic cutting is studied. The structure of circular tool is designed. The differential equation of tool frequency is established. The resonance frequency of tool is solved. Modal analysis is conducted for circular tool through ANSYS and the results are compared through tests.

Reflection at a liquid–solid interface of a transient ultrasonic field radiated by a linear phased array transducer

Ultrasonics ◽  
2016 ◽  
Vol 71 ◽  
pp. 98-105 ◽  
Author(s):  
Nadir Maghlaoui ◽  
Djema Belgroune ◽  
Mohamed Ourak ◽  
Hakim Djelouah
Keyword(s):  
Phased Array ◽  
Ultrasonic Field ◽  
Solid Interface ◽  
Array Transducer

scholarly journals A Simple Angle-Measuring Instrument for Measuring Cemented Stem Anteversion during Total Hip Arthroplasty

2020 ◽  
Author(s):  
Ryo Mitsutake ◽  
Hiromasa Tanino ◽  
Yasuhiro Nishida ◽  
Masaru Higa ◽  
Hiroshi Ito
Keyword(s):  
Total Hip Arthroplasty ◽  
Correlation Coefficient ◽  
Hip Arthroplasty ◽  
Measurement Accuracy ◽  
Measuring Instrument ◽  
Target Angle ◽  
Angle Measuring ◽  
Cemented Stem ◽  
The Mean ◽  
The Relationship

Abstract Background During total hip arthroplasty (THA), the accurate placement of the femoral components is an important determinant of the success of the procedure. This study assessed the accuracy of cemented stem placement using a new angle-measuring instrument. The primary objective was to investigate the accuracy of the intraoperative measurements of cemented stem anteversion obtained using the angle-measuring instrument. Our secondary objective was to evaluate the accuracy of stem positioning performed using the angle-measuring instrument. Methods We compared the intraoperative stem anteversion measurements obtained using the angle-measuring instrument with postoperative stem anteversion measurements obtained using computed tomography in 149 hips (measurement accuracy). We also compared the target angle and postoperative stem anteversion in 105 hips (implantation accuracy). Results The mean amount of intraoperative stem anteversion was 37.9°±10.1°, and the mean amount of postoperative stem anteversion was 37.0°±10.4°. The mean measurement accuracy was 0.9°±6.1°, and the absolute measurement accuracy was 4.9°±3.7°. The correlation coefficient for the relationship between the intraoperative and postoperative stem anteversion measurements was 0.824 (p=0.000). The mean amount of target angle was 37.4°±7.6°, and the mean amount of postoperative stem anteversion was 35.9°±9.1°. The mean implantation accuracy was 1.4°±5.6°, and the mean absolute implantation accuracy was 4.3°±3.6°. The correlation coefficient for the relationship between the target angle and postoperative stem anteversion was 0.795 (p=0.000). Conclusions The angle-measuring instrument measured intraoperative stem anteversion accurately, and cemented stem was implanted accurately during THA with the angle-measuring instrument.

Sign in / Sign up

Export Citation Format

Share Document