A novel laser ultrasonic sensor for testing thickness

2005 ◽  
Author(s):  
Rongqing Xu ◽  
Rui Zhao ◽  
Xiao Chen ◽  
Zhonghua Shen ◽  
Jian Lu ◽  
...  
Keyword(s):  
Ultrasonic Sensor ◽  
Laser Ultrasonic

Materials inspection and process control using compensated laser ultrasound evaluation (CLUE): demonstration of a low-cost laser ultrasonic sensor

1996 ◽  
Author(s):  
David M. Pepper ◽  
Gilmore J. Dunning ◽  
Phillip V. Mitchell ◽  
Stephen W. McCahon ◽  
Marvin B. Klein ◽  
...  
Keyword(s):  
Process Control ◽  
Low Cost ◽  
Ultrasonic Sensor ◽  
Laser Ultrasound ◽  
Laser Ultrasonic ◽  
Ultrasound Evaluation

In-Situ Sensing of the Expansion of Low Density Core (LDC) Ti-6Al-4V Sandwich Structures

1998 ◽  
Vol 521 ◽  
Author(s):  
D. T. Queheillalt ◽  
B. W. Choi ◽  
H. N. G. Wadley ◽  
D. S. Schwartz
Keyword(s):  
Relative Density ◽  
Eddy Current ◽  
Elastic Moduli ◽  
Sandwich Structures ◽  
Ultrasonic Sensor ◽  
Low Density ◽  
Laser Ultrasonic ◽  
Simple Method ◽  
Aerospace Applications ◽  
In Situ Sensing

ABSTRACTA combination multifrequency eddy current and laser ultrasonic sensors have been used to measure the pore expansion kinetics and elastic moduli evolution during the annealing of low density core (LDC) Ti-6Al-4V sandwich structures. The LDC samples were heated to 920°C and held there for up to 12 hr. The eddy current sensor measured the sample thickness (i.e. relative density) and revealed that the samples began to expand early during heating and was nearly complete after 4 hr at 920°C. The laser ultrasonic sensor measurements indicated a concomitant decrease in the elastic moduli with the reduction in relative density. The combination of an eddy current and laser ultrasonic sensor is therefore able to measure both the density and the elastic moduli independently during the annealing stage of LDC Ti-6Al-4V sandwich structure processing providing a simple method for directly controlling the parameters most critical to aerospace applications of these new materials.

Demodulation of Polarimetric Fiber Laser Ultrasonic Sensor With Intensity Noise Cancellation

2019 ◽  
Vol 37 (18) ◽  
pp. 4872-4880
Author(s):  
Jianfei Wang ◽  
Gordon M. H. Flockhart ◽  
Deepak Uttamchandani
Keyword(s):  
Fiber Laser ◽  
Noise Cancellation ◽  
Ultrasonic Sensor ◽  
Intensity Noise ◽  
Laser Ultrasonic

Rancang Bangun Sistem Monitoring Pengukuran Volume Air Berbasis IoT Menggunakan Arduino Wemos

2020 ◽  
Vol 6 (2) ◽  
pp. 147-153
Author(s):  
Muhamad Yusup ◽  
Po. Abas Sunarya ◽  
Krisandi Aprilyanto
Keyword(s):  
Waste Water ◽  
Waste Water Treatment ◽  
Water Reservoir ◽  
Ultrasonic Sensor ◽  
Automated System ◽  
Volume Formula ◽  
Air Volume ◽  
Database Server ◽  
A Company ◽  
Height Data

System The process of counting and storing in a manual water reservoir analysis has a high percentage of error rate compared to an automated system. In a company industry, especially in the WWT (Waste Water Treatment) section, it has several reservoir tanks as stock which are still counted manually. The ultrasonic sensor is placed at the top of the WWT tank in a hanging position. Basically, to measure the volume in a tank only variable height is always changing. So by utilizing the function of the ultrasonic sensor and also the tube volume formula, the stored AIR volume can be monitored in real time based on IoT using the Blynk application. From the sensor, height data is obtained which then the formula is processed by Arduino Wemos and then information is sent to the MySQL database server via the WIFI network.

Development of MEMS Ultrasonic Sensor Using P(VDF/TrFE) Thin Films

2015 ◽  
Vol 135 (5) ◽  
pp. 145-151 ◽  
Author(s):  
Tsunehisa Tanaka ◽  
Shuichi Murakami ◽  
Mayumi Uno ◽  
Kaoru Yamashita
Keyword(s):  
Thin Films ◽  
Ultrasonic Sensor

Preparation and Characteristic Evaluation of Silica-agglomerate Electret with Ultra-thin PTFE Layer for Ultrasonic Sensor

2018 ◽  
Vol 138 (9) ◽  
pp. 441-447
Author(s):  
Kensuke Kageyama ◽  
Takeru Orikasa ◽  
Ahmad Zarif Afiq Bin Jamaludin ◽  
Takenobu Sakai
Keyword(s):  
Ultrasonic Sensor
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