Results 81 to 90 of about 6,687 (249)

A Control Method for the Ultrasonic Spot Welding of Fiber-Reinforced Thermoplastic Laminates through the Weld-Power Time Derivative

Journal of Manufacturing and Materials Processing, 2018
It was found that the ultrasonic spot welding may serve as an efficient method to join relative large thin-walled parts made of fiber-reinforced thermoplastics. In this study, a new control method for the ultrasonic spot-welding process was investigated.
Shahan Tutunjian, Martin Dannemann, Fabian Fischer, Oğuzhan Eroğlu, Niels Modler   +4 more
doaj   +1 more source

Ultrasound‐Assisted Epoxy Resin Curing Monitored by Impedance Spectroscopy

Polymer Engineering &Science, EarlyView.
Ultrasound enhances epoxy cure rates via localized heating without altering cure kinetics. Impedance spectroscopy provides a direct, non‐destructive measure of cure progression, enabling accurate mapping of degree of cure in real time. ABSTRACT Epoxy resins are widely used in aerospace and automotive manufacturing as structural adhesives and matrices ...
Daniel Csehngeri, Anoush Poursartip, Edmond Cretu   +2 more
wiley   +1 more source

Unmanned Aerial Systems for Corrosion Detection: Multi‐Sensor Technologies, Challenges, and Opportunities for Next‐Generation Inspection

Quality and Reliability Engineering International, EarlyView.
ABSTRACT Corrosion remains a critical threat to the integrity and service life of infrastructure in industries such as oil, gas, construction, renewable energy, and transportation. Traditional inspection methods, being labor‐intensive, hazardous, and often subjective, fall short in addressing modern inspection demands.
Alhossein Alharbi, Yunes Alqudsi, Alhasan Ali Alharbi, Mohammed Basheer Mohiuddin   +3 more
wiley   +1 more source

Study of Residual Stress Using Phased Array Ultrasonics in Ti-6AL-4V Wire-Arc Additively Manufactured Components

Sensors
This paper presents a study on residual stress measurement in wire-arc additively manufactured (WAAM) titanium samples using the non-destructive method of phased array ultrasonics. The contour method (CM) was used for the verification of the phased array
Joseph Walker, Brandon Mills, Yashar Javadi, Charles MacLeod, Yongle Sun, Pradeeptta Kumar Taraphdar, Bilal Ahmad, Sundar Gurumurthy, Jialuo Ding, Fiona Sillars   +9 more
doaj   +1 more source

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

Journal of Field Robotics, EarlyView.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone, Mohammed Anteet, Pawandeep S. Matharu, Yara Almubarak   +3 more
wiley   +1 more source

Effect of Ultrasound on Microstructure and Properties of Aluminum–Copper Friction Stir Lap Welding

Metals
In this paper, the influence mechanism of ultrasound on plastic flow and microstructure features of the aluminum–copper friction stir lap welding (Al/Cu-FSLW) process is systematically investigated by adjusting the welding speed and improving the shear ...
Wenzhen Zhao, Yalong Zhu, Zhaoxian Liu, Xiaoyang Yi, Jian Wang, Ao Fu, Fengyi Wang, Huan He   +7 more
doaj   +1 more source

Defects That Magnetize Beyond Monolayer PtSe2

Small, EarlyView.
The presence of a complex point defect consisting of a Pt vacancy (black circle) and a PtSe antisite (red circle) revives and increases the quenched magnetism in bilayer PtSe2. Magnetic properties can be further modulated by the presence of an Se vacancy (blue circle), which can convert the ferromagnetic behavior into antiferromagnetic when it occurs ...
Ilias M. Oikonomou, Danielle Douglas‐Henry, Mohammadreza Daqiqshirazi, Iva Plutnarová, Zdeněk Sofer, Thomas Brumme, Valeria Nicolosi, Thomas Heine   +7 more
wiley   +1 more source

Ultrasonic Welding Technology [PDF]

, 2020
Tato diplomová práce se zabývá optimalizací svařovacích parametrů pro technologii ultra-zvukového svařování. Svařovaný materiál je plast, konkrétně se jedná o PBT s 30% skel-ných vláken (PBT GF30).
Šemrová, Monika
core  

Influence of Higher Tramp Element Level on the Weldability of Automotive Steels

steel research international, EarlyView.
The use of green recycled steels is constantly expanding in the automotive industry. The increase in tramp elements resulting from the recycling of steel is problematic. Tramp elements can lead to a negative influence on the weldability. To understand the influence, the welding properties of three green steels are characterized. The potential limits of
Elias Gebhard Vogt, Patrick Veyel, Lars Gebel, Christian Meyer, Robert Thomas, Michael Thomas, Christoph Herrmann   +6 more
wiley   +1 more source

Ultrasonic Processing Across Different Phases in Laser Welding of Large Thin-Walled Structures

Medžiagotyra
In laser welding applications for large structures like oil storage tanks, ships, automobiles, and high-speed rail, effective post-weld heat treatment is challenging because the structures are large and cannot be disassembled. This results in significant
Haodong LIU, Dongsheng WANG, Changjun CHEN, Aiyong CUI, Bing WANG, Li HAN   +5 more
doaj   +1 more source