Results 31 to 40 of about 610,534 (309)

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

open access: yesAdvanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat   +6 more
wiley   +1 more source

Cross-bidge Kelvin resistor (CBKR) structures for measurement of low contact resistances [PDF]

open access: yes, 2007
A convenient test structure for measurement of the specific contact resistance (ρc) of metal-semiconductor junctions is the CBKR structure. During last few decades the parasitic factors which may strongly affect the measurements accuracy for ρc < 10-6 Ω •
Boksteen, B.K.   +6 more
core   +1 more source

Impact of Textile Architecture on the Electromechanical Behavior of Conductive Carbon: Silicone Composite Strain Sensors

open access: yesAdvanced Engineering Materials, EarlyView.
A stretchable carbon composite is integrated by stencil printing onto two different types of textile, with different yarn morphologies. The impact of the knit structure and coating direction on the performance of the sensor composite is evaluated and used to derive a model estimating nominal resistance at a given strain near the percolation threshold ...
Gabriela Ananieva   +2 more
wiley   +1 more source

Comparative Detectability of Planar Extended Defects of Sheet Metal by Reflection and Transmission Methods

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2020
Introduction. Currently, sheet metal is the main structural material for multi-purpose use. The actual task of the industry is to improve the quality of rolled sheet.
Kirill S. Pavros   +2 more
doaj   +1 more source

Metal phthalocyanine intermediates for the preparation of polymers [PDF]

open access: yes, 1985
Metal 4, 4', 4"",-tetracarboxylic phthalocyanines (MPTC) are prepared by reaction of trimellitic anhydride, a salt or hydroxide of the desired metal (or the metal in powdered form), urea and a catalyst.
Achar, B. N.   +2 more
core   +1 more source

Effect of aluminium sheet surface conditions on feasibility and quality of resistance spot welding [PDF]

open access: yes, 2010
A study investigating the effect of sheet surface condition on resistance spot welding (RSW) of aluminium has been carried out. This concentrates on two automotive aluminium alloys; AA5754 and AA6111, used for structural and closure applications ...
Briskham   +14 more
core   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar   +6 more
wiley   +1 more source

The Effect of Blankholder Pressure on the Amount of Springback in the U-Draw Bending Process

open access: yesAdvances in Mechanical and Materials Engineering
Springback in sheet metal forming processes is a phenomenon that makes it difficult to obtain products with the desired geometry. This paper presents the results of research on the effect of the blankholder pressure on the elastic deformations of sheets ...
Romuald Fejkiel
doaj   +1 more source

Impact Analysis of Geometric Characteristics and Boundary Conditions on the Stiffness of Sheet Metal Parts

open access: yesMedžiagotyra, 2014
This article discusses the traditional stiffness characterization of sheet metal, examined the impact sensitivity of general cover panel geometry to the sheet metal stiffness, and determines the main factors affecting it.
Huaying WU   +3 more
doaj   +1 more source

Explosive cord [PDF]

open access: yes, 1972
Device, jetcord, is metal-clad linear explosive of sufficient flexibility to allow forming into intricate shapes. Total effect is termed ''cutting'' with jetcord consistently ''cutting'' a target of greater thickness than can be penetrated.

core   +1 more source

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