Results 91 to 100 of about 204,518 (380)
Healing of polymer interfaces: Interfacial dynamics, entanglements, and strength [PDF]
, 2014 Self-healing of polymer films often takes place as the molecules diffuse across a damaged region, above their melting temperature. Using molecular dynamics simulations we probe the healing of polymer films and compare the results with those for thermal welding of homopolymer slabs.
arxiv +1 more source
Investigation of metal flow in bridge die extrusion of Alloy 6063 and subsequent effect on surface quality and weld seam integrity [PDF]
, 2013 This paper describes a detailed study of tube extrusion by simulation using finite element method (FEM). The finite element model used one-sixth of symmetry. The extrusion load, emperature evolution and metal flow were predicted.
Akeret R +8 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study reports for the first time the mechanical properties of brazed joints featuring Additively manufactured parts, such parts will likely need to be joined or combined with other components, and brazing offers a way of doing this for complex shapes without distortion. A new shear test methodology developed for such joints is also described.
Frances Livera +7 more
wiley +1 more source
Journal of Materials Research and Technology, 2021 This paper studied lap welding on 1.5 mm AA6061 and AA5182 aluminum alloy sheets with laser beam circular oscillation. The joint form is commonly used in new energy car bodies to achieve the purpose of reducing weight and combining the strength and ...
Lin Chen +3 more
doaj
Feedback Control and Characterization of a Microcantilever Using Optical Radiation Pressure [PDF]
, 2006 We describe a method for feedback-regulation of a microcantilever's response using optical radiation pressure. One laser measures the position of the cantilever and another laser applies a force that is a phase-shifted function of that position. The force is due solely to the momentum of the photons in the laser.
arxiv +1 more source
Precipitate stability and recrystallisation in the weld nuggets of friction stir welded Al-Mg-Si and Al-Mg-Sc alloys [PDF]
, 2008 Two different precipitate hardening aluminium alloys processed by friction stir welding were investigated. The microstructure and the hardness of the as delivered materials were compared to that of the weld nugget.
A. Cabello Muñoz +31 more
core +5 more sources
Advanced Engineering Materials, EarlyView.The functional properties of Fe–Mn–Si–Cr‐based shape memory alloys are influenced, among other things, by their chemical composition. Here, the vaporization of Mn, the most volatile element of the alloy, is investigated. It is shown that the process parameters make noninterchangeable contributions to the vaporization and that vaporization differences ...
Maylin Homfeldt, Anastasiya Toenjes
wiley +1 more source
Applied Mechanics, 2020 Material flow transportation around the rotating tool and the mass deposition at the backside of the tool are critical characteristics of friction stir welding.
Abbas Tamadon, Dirk J. Pons, Don Clucas
doaj +1 more source
Study on toughening mechanism of Ti on weld metal of high strength steel
Materials Research Express, 2021 The effect of Ti element on acicular ferrite microstructure of high strength steel weld was studied by scanning electron microscope(SEM), Transmission electron microscopy(TEM) and EDX spectrum analysis.
Xu Han +3 more
doaj +1 more source
Spatter Formation in Laser Welding with Beam Oscillation
Physics Procedia, 2013 AbstractThe investigation presented in this paper aims on a quantitative analysis of spatter formation in laser beam welding with superposed beam oscillation. After a discussion of design space limitations, which result from the scanner dynamics and theoretical considerations on the welding process itself, an optimal experimental design is created.
M. Schweier +3 more
openaire +2 more sources