Results 161 to 170 of about 13,198 (210)

In Situ Acoustic Monitoring of Focused Femtosecond Pulse Duration in Air

Laser &Photonics Reviews, EarlyView.
Air‐breakdown acoustics at the laser focus is used to determine femtosecond pulse duration with a simple USB microphone. By chirp‐tuning and compressing 1030 nm pulses from 241 to 50 fs, the acoustic amplitude scales inversely proportional to the square root of the pulse duration, enabling in situ readout over 50 fs–5 ps—crucial for precise pulse ...
Indrė Meškėlaitė, Hsin‐Hui Huang, Haoran Mu, Nguyen Hoai An Le, Tomas Katkus, Edvinas Aleksandravičius, Gabrielius Kontenis, Domas Paipulas, Saulius Juodkazis, Darius Gailevičius   +9 more
wiley   +1 more source

Flexible bioelectronic sensors promote the advancement of wearable ultrasound technology in the medicine. [PDF]

Microsyst Nanoeng
Li J, Li G, Ma C, Li W, Yu G, Xiang L, Yao G.   +6 more
europepmc   +1 more source

Damage Identification in Various Types of Composite Plates Using Guided Waves Excited by a Piezoelectric Transducer and Measured by a Laser Vibrometer. [PDF]

Sensors (Basel), 2019
Radzieński M, Kudela P, Marzani A, De Marchi L, Ostachowicz W.   +4 more
europepmc   +1 more source

Effect of Protective Coating Thickness on Ultrasonic Guided Wave Propagation in Plate‐Like Structures

Macromolecular Symposia, EarlyView.
ABSTRACT Ultrasonic Guided Waves (UGWs) are widely employed for the inspection and monitoring of plate‐like structures due to their long‐range propagation capability and sensitivity to structural and material changes. In real aerospace components, however, structural surfaces are commonly covered by protective layers, such as coatings or metallic films,
Donato Perfetto, Antonio Aversano, Antonio Polverino, Nima Rezazadeh, Alessandro De Luca   +4 more
wiley   +1 more source

Uncertainty, Sensitivity, and Efficiency Analysis of a Hybrid Piezoelectric–Electromagnetic Energy Harvester

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Digitalization and emerging technologies are increasing the demand for wireless sensing and the Internet of Things (IoT), which provide opportunities for autonomous sources of electricity in the form of energy harvesting systems. This paper focuses on the challenges in hybrid piezoelectric‐electromagnetic kinetic energy harvesting systems that
Petr Sosna, Damian Gaska, Zdeněk Hadaš
wiley   +1 more source

Embedding Fiber Segment Interferometry for Localization of Defects in Composite Structures

Polymer Composites, EarlyView.
Graphical representation of composite structures with embedded fiber optic sensors for structural health monitoring, enabling strain measurement and damage localization under mechanical loading. ABSTRACT In the area of structural health monitoring (SHM), embedding strain sensors into smart composites is a key strategy for detecting failures arising ...
Shiva Mohammadkarimi, Christoph Hemeling, Thomas Kissinger, Florian Puch   +3 more
wiley   +1 more source

Wearable ultrasound: a review of core technologies and clinical applications in cardiovascular monitoring. [PDF]

Microsyst Nanoeng
Yan M, Wang Z, Li Z, Wang P, Wu P, Chen X, Chen X, Du L, Wang Y, Song J, Fang Z.   +10 more
europepmc   +1 more source

A Review of Mechanical Reinforcement and Piezoresistive Self‐Sensing in Carbon Nanotube Fiber Composites

Polymer Composites, EarlyView.
PSPP‐TRL mapping of CNT‐modified CFRP literature, with four recurring confusions resolved and five scale‐up problems quantified. ABSTRACT Carbon nanotube‐modified fiber composites are often presented as a route to stronger, tougher, and self‐sensing structural materials.
Sanan H. Khan
wiley   +1 more source

Fusion Bonding Repair of Impact‐Damaged Elium Laminates: Comparison of Hot Pressing and Joule Heating

Polymer Composites, EarlyView.
Joule Heating‐Enabled Repair of Impact‐Damaged GFRP/Elium Laminates. ABSTRACT This study investigates the repairability of glass fiber‐reinforced Elium (GFRP/Elium) laminates incorporating nickel‐coated carbon veils, focusing on hot pressing and Joule heating as fusion bonding repair techniques.
Ozan Can Zehni
wiley   +1 more source

Printed Piezoelectric Materials: From Functional Inks to High-Performance Transducers. [PDF]

Sensors (Basel)
Reis Carneiro M.
europepmc   +1 more source