Results 241 to 250 of about 572,061 (268)

Onset detection of ultrasonic signals for the testing of concrete foundation piles by coupled continuous wavelet transform and machine learning algorithms

Advanced Engineering Informatics, 2020
The construction of ultra-high-rise and long-span structures requires higher requirements for the integrity detection of piles. The acoustic signal detection has been verified an efficient and accurate nondestructive testing method.
Mengxi Zhang, Mingchao Li, Jinrui Zhang, Le Liu, Heng Li   +4 more
semanticscholar   +1 more source

Efficient Global Sensitivity Analysis of Model-Based Ultrasonic Nondestructive Testing Systems Using Machine Learning and Sobol’ Indices

Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, 2021
Abstract The objective of this work is to reduce the cost of performing model-based sensitivity analysis for ultrasonic nondestructive testing systems by replacing the accurate physics-based model with machine learning (ML) algorithms and quickly compute Sobol’ indices. The ML algorithms considered in this work are neural networks (NNs),
Jethro Nagawkar, Leifur Leifsson
openaire   +1 more source

Analysis and Testing on Material Removal Mechanism on Ultrasonic Composite Electrochemical Machining

2017
This paper researches the parameters influence law of ultrasonic and electrolytic machining and their mutual synergy mechanism, establishes a mathematical model of ultrasonic composite electrochemical machining material removal rate, and analyzes the role of ultrasonic and electrochemical machining in ultrasonic composite electrochemical machining.
Linlin Li, Yongwei Zhu
openaire   +1 more source

Predicting compressive strength of quarry waste-based geopolymer mortar using machine learning algorithms incorporating mix design and ultrasonic pulse velocity

Nondestructive Testing and Evaluation
The current study aimed to investigate the possibility of predicting the compressive strength of geopolymer mortar by mix design parameters, ultrasonic pulse velocity (UPV) and machine learning techniques.
N. Sathiparan, P. Jeyananthan
semanticscholar   +1 more source

Ultrasonic fatigue testing under multiaxial loading on a railway steel

, 2020
Ultrasonic fatigue testing is a relative recent fatigue study methodology that applies resonant principles for the induction of stress cycles in a specific designed material specimen. Such experimental method can apply fatigue damage at high frequencies,
Pedro R. da Costa, H. Soares, L. Reis, M. Freitas   +3 more
semanticscholar   +1 more source

Design and testing of rotors for a cylindrical micro-machined micro ultrasonic motor

IEEE Ultrasonics Symposium, 2005., 2006
In this paper, a design and testing of rotors for a micro ultrasonic motor using micro-machined cylindrical bulk piezoelectric vibrator is introduced. This motor consists of the vibrator, a glass case and a rotor. The diameter of the piezoelectric vibrator was 0.8 mm and that of the motor case was 1.8 mm. Since the stator transducer is fixed at the end
T. Kanda, Y. Oomori, A. Makino, K. Suzumori, A. Kobayashi   +4 more
openaire   +1 more source

Rotary Combined Ultrasonic and Electrochemical Machining Device of Small Holes and its Test Study

Key Engineering Materials, 2013
Discussing the technology of small holes processing and the development of the combined ultrasonic and electrochemical machining, the technology of combined ultrasonic and electrochemical Machining was studied and its device was designed. By the preliminary tests, the impacts of various factors on the processing of small holes by combined ultrasonic ...
Ze Xiang Liu, Min Kang, Xiu Qing Fu
openaire   +1 more source

Design and Test of Capacitive Micro-machined Ultrasonic Transducer Array for the Air-coupled Ultrasound Imaging Applications

2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2020
The Air-coupled ultrasound imaging is one of the most exciting and challenging applications for ultrasound transducer arrays. The CMUT based on MEMS technology with its unique advantages of good matching with air, has become the favorite transducer of the new generation of ultrasound imaging system.
Dongmei Liang, Lei Ye, Zhuochen Wang, Lu Yu, Hui Zhang, Hao Feng   +5 more
openaire   +1 more source

Carburization level identification in industrial HP pipes using ultrasonic evaluation and machine learning

Ultrasonics, 2019
HighlightsUltrasound NDE is applied alternatively to magnetic testing to detect carburization.A novel method combining signal processing and machine learning is proposed.Different classifier designs are considered and compared.Experimental results from ...
Lucas F. M. Rodrigues, F. C. Cruz, M. A. Oliveira, Eduardo F. Simas Filho, Maria C. S. Albuquerque, I. C. Silva, C. Farias   +6 more
semanticscholar   +1 more source

Quantitative evaluation of steel corrosion induced deterioration in rubber concrete by integrating ultrasonic testing, machine learning and mesoscale simulation

Cement & Concrete Composites, 2022
Jinrui Zhang, Mengxi Zhang, B. Dong, Hongyan Ma   +3 more
semanticscholar   +1 more source