Detection of a second harmonic ultrasonic component generated from a fastened bolt using a double-layered piezoelectric transducer
スポンサーリンク
概要
- 論文の詳細を見る
This paper investigates the use of ultrasonic second harmonic components in the quality control of bolt fastened structures. The second harmonic components from a fastened bolt were detected using a double-layered piezoelectric ultrasonic transducer (DLPT). The fundamental ultrasonic pulse waves (1MHz) are transmitted when the DLPT is electrically connected in parallel, while the second harmonic ultrasonic components (2MHz) are detected when the DLPT is connected in series. A hexagon head bolt (the diameter and length of the screw are 12mm and 100mm) was used in the experiments. The bolt was fastened by a torque of 40N-m. The second harmonic component increased by approximately 10dB before and after the bolt was fastened.
著者
-
FUKUDA Makoto
Department of Material Chemistry, Graduate School of Engineering, Kyoto University
-
IMANO Kazuhiko
Department of Electrical and Electronic Engineering, Faculty of Engineering and Resource Science, Ak
関連論文
- A Novel Double-Layered Piezoelectric Transducer for Detecting Second Harmonic Ultrasonic Pulse Waves
- Detection of a second harmonic ultrasonic component generated from a fastened bolt using a double-layered piezoelectric transducer
- Fully Hydrophobic Artificial Protein but Water Dispersible due to Large Dipole
- Application of a Double-Layered Piezoelectric Transducer in the Generation of Short Ultrasonic Pulses
- Detection of subharmonic components generated from microbubbles in water using double-layered piezoelectric transducer with aligning polarization directions
- An Irreducible Form of Gamma Matrices for HMDS Coefficients of the Heat Kernel in Higher Dimensions(Particles and Fields)
- Analyses of Resonances in 4- and 5-Neutrino Oscillations in Matter(Particles and Fields)
- Effects of fluid flow on elution of hydrophilic modifier from dialysis membrane surfaces
- MASS TRANSFER IN LAMINAR FLOWS AROUND SINGLE HOLLOW-FIBER MEMBRANES FOR HEMODIALYSIS
- Higher Plasma Vascular Endothelial Growth Factor Levels Correlate with Menopause, Overexpression of p53, and Recurrence of Breast Cancer
- An Evaluation of Predictive Factors Involved in Clinical or Pathological Response to Primary Chemotherapy in Advanced Breast Cancer
- Benefits of Medroxyprogesterone Acetate (MPA) in Advanced or Recurrent Breast Cancer with Higher Serum Concentration
- An Evaluation of DNA Polymerase α as a Prognostic Predictor in Early Breast Cancers Smaller than 2 cm
- Protonation-Induced Conformational Changes of N,N,N',N'-Tetramethylethylenediamine. Importance of Strong N-H^+…N Hydrogen Bonding
- Fully Hydrophobic Artificial Protein but Water Dispersible due to Large Dipole
- Spontaneous Assembly Formation of Cyclic Dimer of β-Amino Acid in Water
- Development of a device for chemiluminescence determination of superoxide generated inside a dialysis hollow-fiber membrane