... 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...

.... , and Takeda , N. , 2012 , “ Acoustic Source Localization in Anisotropic Plates ,” Ultrasonics , 52 ( 6 ), pp. 740 – 746 . 10.1016/j.ultras.2012.01.017 [7] Yin , S. , Cui , Z. , and Kundu , T. , 2018 , “ Acoustic Source Localization in Anisotropic Plates With “Z” Shaped Sensor...

...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...

... with the dimensions are shown in Fig. 4 . The MBN sensor is placed on the sample in such a way that the center of the pick-up coil (which is volumetric) is placed on a particular scanning point (say 1, which is shown in Fig. 4 ). The MBN data (voltage signal) are recorded using LabView and then a similar procedure...

... engineering prognosis sensors service life prediction ultrasonics American Chemistry Council 10.13039/100007824 Plastics Division Composite materials possess a higher stiffness-to-weight ratio compared to traditional metals. Owing to their excellent mechanical properties, composite...

... are not flanging, the signal in the transducers may not contain enough strength to ensure a robust transfer function reconstruction. Four zones of the HTL track are highlighted in Fig. 7 corresponding to locations where the signal strength was higher than the sensor's electrical noise floor. The zones where...

..., the findings of this study allow the framing of a valid strategy to improve the design of the transducers in order to make the HNSW-based technique suitable for long-term monitoring. Fig. 16 The sensor vibrations detected in the videos in colormap format The sensor vibrations detected in the videos...

...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...

...-pilani.ac.in 03 09 2020 10 07 2021 10 07 2021 03 08 2021 parallel misalignment angular misalignment ANOVA response surface methodology (RSM) design of experiments (DoE) diagnostic decision support fault analysis offline diagnostic approaches sensors vibrations...

...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...