The development of the geometric angle measuring instrument for lathe tool based on single chip

2021 ◽  
Author(s):  
Zhu xiaocui ◽  
Li boxiao ◽  
Wang jili ◽  
Li Chunguang ◽  
Hu wei
Keyword(s):  
Measuring Instrument ◽  
Single Chip ◽  
Angle Measuring ◽  
Lathe Tool

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.

scholarly journals A simple angle-measuring instrument for measuring cemented stem anteversion during total hip arthroplasty

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Ryo Mitsutake ◽  
Hiromasa Tanino ◽  
Yasuhiro Nishida ◽  
Masaru Higa ◽  
Hiroshi Ito
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Measuring Instrument ◽  
Total Hip ◽  
Angle Measuring ◽  
Cemented Stem

A universal angle-measuring instrument

2006 ◽  
Vol 49 (9) ◽  
pp. 857-860 ◽  
Author(s):  
E. B. Ignat’ev
Keyword(s):  
Measuring Instrument ◽  
Angle Measuring

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.

Effect of Modification of Coal Powder Using Silane Coupling Agent on Mechanical Properties of SBS

2012 ◽  
Vol 538-541 ◽  
pp. 2246-2250 ◽  
Author(s):  
Guo Jun Cheng ◽  
Xiu Hua Yu ◽  
Zhong Feng Tang
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Measuring Instrument ◽  
Angle Measuring ◽  
Coal Powder ◽  
Silane Coupling ◽  
Powder Particles ◽  
Physical And Chemical ◽  
Butadiene Styrene ◽  
Properties Of Composites

Coupling agent γ-methacryloxypropyltrimethoxysilane（KH-570） was used as modifier to improve the superficial capacity of coal powder. Modified coal powder/thermoplastic butadiene-styrene rubber (SBS) composites were prepared by mixing procedure. The modified and unmodified coal powder and mechanical properties of composites were characterized and analyzed by Fourier Transform Infrared Spectroscopy (FTIR), thermogravimetric analysis (TGA), contact angle measuring instrument(CAMI), sedimentation test, rubber process analyzer (RPA) and scanning electron microscopy (SEM). Results showed that KH-570 can form chemical union with coal powder. The agglomeration of coal powder particles was effectively restricted after surface modification. The modified coal powder particles can be dispersed equally in rubber and form physical and chemical crosslinking structure with rubber.

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