... vibrometer setup, which has drawbacks. As an alternative, a low-cost micro-electro-mechanical system (MEMS) sensor array and dedicated processing scheme are presented enabling fast inspection of large samples. This inspection approach uses a piezoelectric actuator to excite the composite or metallic part...

... 09 01 2023 10 01 2023 08 02 2023 acoustic source localization material uncertainty signal energy-based approach orthotropic plates Monte Carlo simulation Sobol’ indices acoustic emission elastic wave sensors ultrasonics wave propagation modeling An integral...

...Louis Oh; Emil Pitz; Kishore Pochiraju This article presents a spindle condition monitoring methodology using a low-power smart vibration sensor and a near real-time deep neural network (DNN) classifier. The most frequent spindle failures, such as imbalance, ingression, and evidence of a crash...

... classification diagnostic feature extraction electromagnetics materials testing sensors service life prediction Stainless-steel is used in many applications because of its excellent mechanical properties at elevated temperatures. Martensitic grade stainless steels because of its strength, corrosion...

... framework to lower prediction error due to sensor and process noise [ 27 – 29 ]. Finally, the hybrid approach takes advantage of both data-driven and model-based techniques to overcome the above-discussed issues. One of our earlier works shows the application of hybrid prognosis where residual stiffness...

... 19 08 2022 14 09 2022 continuous and periodic condition assessment damage classification diagnostic feature extraction sensors testing methodologies ultrasonics Federal Railroad Administration 10.13039/100006283 693JJ620C000024 Defective rails are a major...

... Fig. 4 Video processing algorithm used to detect the vibrations of the sensor disk Video processing algorithm used to detect the vibrations of the sensor disk Email: hoj14@pitt.edu 1 Corresponding author. Email: pir3@pitt.edu 22 10 2021 14 04 2022 14 04 2022 10...

...Chia-Fu Wang; Junghyun Wee; Kara Peters Fiber Bragg grating (FBG) sensors are often applied as Lamb wave detectors for structural health monitoring (SHM) systems. Analyzing the measured signal for the identification of structural damage requires a high signal-to-noise ratio (SNR) because of the low...

... contaminated fluids beyond the design containment boundary. This program seeks to demonstrate the feasibility for a torsional wave mode sensor to attach to the outside of a long (30-m) heat exchanger tube in the stagnant flow area where the tube joins the heat exchanger plenum and where it is possible...

... angular misalignment ANOVA response surface methodology (RSM) design of experiments (DoE) diagnostic decision support fault analysis offline diagnostic approaches sensors vibrations Rotary machines are major assets in many industries such as aerospace industry, automobile industry...

...Saman Farhangdoust; Gary Georgeson; Jeong-Beom Ihn; Armin Mehrabi These days, piezoelectric energy harvesting (PEH) is introduced as one of the clean and renewable energy sources for powering the self-powered sensors utilized for wireless condition monitoring of structures. However, low efficiency...

... 05 2021 11 05 2021 07 06 2021 temperature monitoring waveguide shear horizontal continuous and periodic condition assessment elastic wave harsh or extreme environments manufacturing processes sensors service life prediction ultrasonics Temperature is one of the most...

...H. Huang; K. Balusu Recently published experimental works on remotely bonded fiber Bragg grating (FBG) ultrasound (US) sensors show that they display some unique characteristics that are not observed with directly bonded FBG sensors. These studies suggest that the bonding of the optical fiber...

... matrix arrays materials testing sensors ultrasonic testing Dual element longitudinal transmit-receive ultrasonic transducers were frequently used in the past to detect corrosion and perform wall thickness measurements in different industrial sectors [ 1 , 2 ]. These transducers were widely...

... 03 2020 elastic wave focusing beam width control waveguide conical transmission horns sensors structural engineering ultrasonics wave propagation modeling Health monitoring of various energy, chemical, and petroleum plant components is of utmost importance in ensuring human...

... , Deformation and Fracture Mechanics of Engineering Materials , Wiley , New York . [7] Choi , S. , Cho , H. , and Lissenden , C. , 2017 , “ Selection of Shear Horizontal Wave Transducers for Robotic Nondestructive Inspection in Harsh Environments ,” Sensors , 17 ( 12 ), p. 5 . 10.3390...

... collected by sensors are then transmitted to the upper computer system by a 4G module. Finally, structural health assessment of portal crane is carried out in the upper computer system based on the improved TOPSIS model. The hardware data acquisition system and upper computer system are shown in Figs...

... 08 2019 25 08 2019 04 09 2019 CFRP composites characteristic defects manufacturing flaws operational damage misorientation waviness wrinkling ECT air-cored eddy current sensor impedance ECA aerospace engineering continuous and periodic condition assessment damage...