Results 31 to 40 of about 6,743 (266)

A Physically Motivated Heat Source Model for Laser Beam Welding

Metals
In this contribution, we present a physically motivated heat source model for the numerical modeling of laser beam welding processes. Since the calibration of existing heat source models, such as the conic or Goldak model, is difficult, the ...
Philipp Hartwig, Nasim Bakir, Lisa Scheunemann, Andrey Gumenyuk, Jörg Schröder, Michael Rethmeier   +5 more
doaj   +1 more source

A Virtual Design of Experiments Method to Evaluate the Effect of Design and Welding Parameters on Weld Quality in Aerospace Applications

Aerospace, 2019
During multidisciplinary design of welded aircraft components, designs are principally optimized upon component performance, employing well-established modelling and simulation techniques.
Julia Madrid, Samuel Lorin, Rikard Söderberg, Peter Hammersberg, Kristina Wärmefjord, Johan Lööf   +5 more
doaj   +1 more source

Supporting Imaging of Austenitic Welds with Finite Element Welding Simulation—Which Parameters Matter?

Applied Sciences, 2023
The basic principle of ultrasound is to relate the time of flight of a received echo to the location of a reflector, assuming a known and constant velocity of sound.
Michał K. Kalkowski, Zoltán Bézi, Michael J. S. Lowe, Andreas Schumm, Bernadett Spisák, Szabolcs Szavai   +5 more
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Numerical Simulation of the Electron Beam Welding and Post Welding Heat Treatment Coupling Process

High Temperature Materials and Processes, 2018
In this article, the electron beam welding and post welding heat treatment (PWHT) coupling process of nickel alloy GH80A is carried out using ABAQUS software. The thermo-mechanical coupling (TMC) model is considered in the simulation.
Hong Zhang, Zhengxing Men, Jiukai Li, Yongjie Liu, Qingyuan Wang   +4 more
doaj   +1 more source

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

Advanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz, Jonas Fell, Hendrik Jost, Stefan Diebels, Hans‐Georg Herrmann   +4 more
wiley   +1 more source

A Contribution to the Analysis of the Effects of Pulsed Current in GTAW Welding of 1-mm-Thick AISI 304 Sheets

Metals, 2023
GTAW welding with pulsed current has been misinterpreted in some of the classic literature and scientific articles. General conclusions are presented, stating that its use provides greater penetration compared to the use of constant current and that the ...
Jair Carlos Dutra, Kaue Correa Riffel, Regis Henrique Gonçalves e Silva, Antonio Jose Ramirez   +3 more
doaj   +1 more source

Influence of TiC and TiN Ceramic Reinforcements on the Microstructure, Thermal Expansion Behavior, and Tensile Properties of Invar 36 Manufactured by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji, Natasha Sacks, Johannes Pötschke, Björn Matthey   +3 more
wiley   +1 more source

Simulation analysis of X80 pipeline steel welding

Metalurgija, 2023
In order to improve the quality of welded joints and increase the service life of pipelines, ABAQUS finite element software was used to simulate the temperature field of 18,4 mm thick X80 pipeline steel in multi-layer and multi pass welding.
M. M. Li, H. C. Ji, Q. S. Lin, C. D. Wu, S. Cai   +4 more
doaj  

Optimization of GMAW Process Parameters in Ultra-High-Strength Steel Based on Prediction

Metals, 2023
Ultra-high-strength steel (UHSS) is a complex and sophisticated material that allows the development of products with reduced weight but increased strength and can assist, for example, in the automotive industry, saving fuel in vehicles and decreasing ...
Alnecino Netto, Francois Miterand Njock Bayock, Paul Kah   +2 more
doaj   +1 more source