Results 31 to 40 of about 105,270 (315)

Distribution of Nonmetallic Inclusions in Slab for Tinplate

Metals, 2022
Tinplate is widely used in food packaging and chemical packaging. Industrial production continues to reduce the thickness of tinplate steel, which puts higher requirements on the control of inclusions.
Zhiying Mo, Zhendong Wang, Rudong Wang, Zhengzhi Zhao, Yuan Fang, Haixu Li, Yanzhao Luo, Shaojun Wang, Heng Cui   +8 more
doaj   +1 more source

Frequency response of underwater ultrasonic transducers in the near field using polarimetric polarization maintaining fiber sensors [PDF]

, 2010
Near-field ultrasonic response (50-2000 kHz) of an underwater 1-3 piezocomposite transducer is experimentally investigated using a polarimetric polarization maintaining fiber sensor.
Hayward, Gordon, Mcguire, Michelle, S. Gareth Pierce, Gordon Hayward, Michelle McGuire, Brian Culshaw, Pierce, Stephen, Gordon M. H. Flockhart, Bennecer, Abdeldjalil, Pierce, S Gareth, Bennecer, Abdeldjalil; id_orcid, Abdeldjalil Bennecer, Flockhart, Gordon M H, Culshaw, Brian, Flockhart, Gordon   +14 more
core   +1 more source

Evolution Behavior and Closure Mechanism of Porosity in Large Billet during the Reduction Pretreatment

Metals, 2022
The reduction pretreatment process was proposed to be applied to large billets for the purpose of alleviating the center porosities and reducing the rolling ratio.
Yang Liu, Jianhua Liu, Yang He
doaj   +1 more source

Ultrasonic detection of parathyroid adenomas

The British Journal of Radiology, 1991
Abstract High-resolution real time sonography was used to evaluate patients with suspected primary hyperparathyroidism. A total of 12 consecutive patients was scanned pre-operatively. The sensitivity of the procedure was 92% and the specificity 97%. In our hospital sonography is the procedure of choice for localizing enlarged parathyroid
J, Murchison, C, McIntosh, A G, Aitken, J, Logie, A, Munro   +4 more
openaire   +2 more sources

Online visual monitoring and ultrasonic feedback detection in the ultrasonic precision bonding of polymers

Advanced Composites Letters, 2020
Ultrasonic bonding is a convenient bonding technology, which features sufficient cleanliness, high efficiency, no need for additional bonding aids, and other outstanding advantages. In recent years, it has been introduced into the field of the micro–nano
Yibo Sun, Yuqi Feng, Pengfei Hu, Xing Zhao, Xinhua Yang, Guoxiong Wu   +5 more
doaj   +1 more source

Gold-Diaphragm Based Fabry-Perot Ultrasonic Sensor for Partial Discharge Detection and Localization

IEEE Photonics Journal, 2020
Acoustic measurement is the most widely used non-electric method to detect partial discharge (PD) signals by detect the ultrasonic waves arisen from partial discharge.
Wei Zhang, Ping Lu, Wenjun Ni, Wanze Xiong, Deming Liu, Jiangshan Zhang   +5 more
doaj   +1 more source

Detection of cracks in metal sheets using pulsed laser generated ultrasound and EMAT detection [PDF]

, 2011
A pulsed Nd: YAG laser with an approximately Gaussian beam shape is directed onto the surface of an aluminium sheet at an energy density below which damage by laser ablation occurs, generating Lamb waves in the sheet.
Dixon, S., Burrows, S. E. (Susan E.), Dutton, B. (Ben), Fan, Yichao   +3 more
core   +1 more source

Propagation Laws of Ultrasonic Continuous Signals at the Transmitting Transducer–Soil Interface

Agriculture
Ultrasonic detection is one of the main methods for information detection and has advantages in soil detection. Ultrasonic signals attenuate in soil, resulting in unique propagation laws.
Zhinan Wang, Caiyun Lu, Hongwen Li, Chao Wang, Longbao Wang, Hanyu Yang   +5 more
doaj   +1 more source

A local defect resonance for linear and nonlinear ultrasonic thermography [PDF]

, 2014
An efficient wave-defect interaction is the key to a high thermal response of flaws in ultrasonic thermography. To selectively enhance defect vibrations a concept of local defect resonance is developed and applied to ultrasonic activation of defects ...
Solodov, I., Rahammer, M., Busse, G.
core   +1 more source

Nondestructive testing method of SiCp particle dispersion in SiCp/AZ91D magnesium matrix composites

Cailiao gongcheng, 2023
SiCp/AZ91D magnesium matrix composites are widely used in the aerospace field, but there is less report on the distribution of SiCp particles in SiCp/AZ91D magnesium matrix composites by ultrasonic testing methods at home and abroad.
HU Ke, YAO Junping, LU Minghui, CHENG Shuyun, DONG Xingyu   +4 more
doaj   +1 more source